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Adsorption Of Hydrogen Methane And Carbon Dioxide Gases In Metal Organic Frameworks Using The Sticking Efficiency Concept
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Book Synopsis Adsorption of Hydrogen, Methane and Carbon Dioxide Gases in Metal-organic Frameworks Using the Sticking Efficiency Concept by : Esosa Mark Iriowen
Download or read book Adsorption of Hydrogen, Methane and Carbon Dioxide Gases in Metal-organic Frameworks Using the Sticking Efficiency Concept written by Esosa Mark Iriowen and published by . This book was released on 2015 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Carbon-Capture by Metal-Organic Framework Materials by : David J. Fisher
Download or read book Carbon-Capture by Metal-Organic Framework Materials written by David J. Fisher and published by Materials Research Forum LLC. This book was released on 2020-07-05 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Organic Framework Materials (MOFs) are well suited for absorbing carbon dioxide. MOFs can form highly-porous structures with great adsorption capacities. They also offer good catalytic properties and much research refers to the relationship between catalytic performance and framework structure. In addition to simple CO2 absorption, there are other interesting applications, such as the direct electrochemical reduction into useful chemicals and fuels, the conversion of CO2 into methanol, the electrochemical reduction of CO2, or electrocatalytic hydrogen evolution (thus boosting the ‘hydrogen economy’). The book references 295 original resources and includes their direct web link for in-depth reading. Keywords: Global Warming, Carbon Dioxide Capture, Metal-Organic Frameworks MOFs, Adsorbents for CO2, Porous Solids, Catalytic Performance, Synthesis of MOFs, Conversion of CO2 into Methanol, Electrocatalytic Hydrogen Evolution, Hydrogen Economy, Gas Adsorption, Gas Separation, Organic Ligands, Metal Ion Clusters.
Book Synopsis Gas Adsorption in Metal-Organic Frameworks by : T. Grant Glover
Download or read book Gas Adsorption in Metal-Organic Frameworks written by T. Grant Glover and published by CRC Press. This book was released on 2018-09-03 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text discusses the synthesis, characterization, and application of metal-organic frameworks (MOFs) for the purpose of adsorbing gases. It provides details on the fundamentals of thermodynamics, mass transfer, and diffusion that are commonly required when evaluating MOF materials for gas separation and storage applications and includes a discussion of molecular simulation tools needed to examine gas adsorption in MOFs. Additionally, the work presents techniques that can be used to characterize MOFs after gas adsorption has occurred and provides guidance on the water stability of these materials. Lastly, applications of MOFs are considered with a discussion of how to measure the gas storage capacity of MOFs, a discussion of how to screen MOFs to for filtration applications, and a discussion of the use of MOFs to perform industrial separations, such as olefin/paraffin separations. Throughout the work, fundamental information, such as a discussion on the calculation of MOF surface area and description of adsorption phenomena in packed-beds, is balanced with a discussion of the results from research literature.
Book Synopsis Metal-Organic Frameworks for Gas Storage and Separation by : Jarad Adam Mason
Download or read book Metal-Organic Frameworks for Gas Storage and Separation written by Jarad Adam Mason and published by . This book was released on 2015 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this dissertation describes the design, synthesis, and characterization of metal-organic frameworks for applications in gas storage and gas separations, with a specific focus on natural gas and hydrogen storage for mobile applications and on post-combustion carbon dioxide capture from coal- or natural gas-fired power plants. A wide variety of techniques and spectroscopic methods are covered, including gas adsorption, x-ray diffraction, infrared and UV-vis-NIR spectroscopies, and calorimetry. Chapter One provides a brief introduction to metal-organic frameworks as a new class of porous materials for gas adsorption-related applications. The potential of metal-organic frameworks for use in post-combustion carbon dioxide capture and natural gas storage is discussed, and the unique and promising properties of adsorbents with stepped adsorption isotherms for these applications are highlighted. In Chapter Two, two representative metal-organic frameworks, Zn4O(BTB)2 (BTB3- = 1,3,5-benzenetribenzoate; MOF-177) and Mg2(dobdc) (dobdc4- = 1,4-dioxido-2,5-benzenedicarboxylate; Mg-MOF-74, CPO-27-Mg), are evaluated in detail for their potential use in post-combustion CO2 capture via temperature swing adsorption (TSA). Low-pressure single-component CO2 and N2 adsorption isotherms were measured every 10 °C from 20 to 200 °C, allowing the performance of each material to be analyzed precisely. In order to gain a more complete understanding of the separation phenomena and the thermodynamics of CO2 adsorption, the isotherms were analyzed using a variety of methods. These results show that the presence of strong CO2 adsorption sites is essential for a metal-organic framework to be of utility in post-combustion CO2 capture via a TSA process, and present a methodology for the evaluation of new metal-organic frameworks via analysis of single-component gas adsorption isotherms. Chapter Three briefly discusses high-pressure adsorption measurements and reviews efforts to develop metal-organic frameworks with high methane storage capacities. To illustrate the most important properties for evaluating adsorbents for natural gas storage and for designing a next generation of improved materials, six metal-organic frameworks and an activated carbon, with a range of surface areas, pore structures, and surface chemistries representative of the most promising adsorbents for methane storage, are evaluated in detail. High-pressure methane adsorption isotherms are used to compare gravimetric and volumetric capacities, isosteric heats of adsorption, and usable storage capacities. Additionally, the relative importance of increasing volumetric capacity, rather than gravimetric capacity, for extending the driving range of natural gas vehicles is highlighted. Other important systems-level factors, such as thermal management, mechanical properties, and the effects of impurities, are also considered, and potential materials synthesis contributions to improving performance in a complete adsorbed natural gas system are discussed. Chapter Four discusses the design and validation of a high-throughput multicomponent adsorption instrument that can measure equilibrium adsorption isotherms for mixtures of gases at conditions that are representative of an actual flue gas from a power plant. This instrument is used to study 15 different metal-organic frameworks, zeolites, mesoporous silicas, and activated carbons representative of the broad range of solid adsorbents that have received attention for CO2 capture. While the multicomponent results provide many interesting fundamental insights, only adsorbents functionalized with alkylamines are shown to have any significant CO2 capacity in the presence of N2 and H2O at equilibrium partial pressures similar to those expected in a carbon capture process. Most significantly, the amine-appended metal organic framework mmen-Mg2(dobpdc) (mmen = N,N′-dimethylethylenediamine, dobpdc4– = 4,4′-dioxido-3,3′-biphenyldicarboxylate) exhibits a record CO2 capacity of 4.2±0.2 mmol/g (16 wt %) at 0.1 bar and 40 °C in the presence of a high partial pressure of H2O. In Chapter Five, the flexible metal-organic frameworks M(bdp) (M = Fe, Co; bdp2– = 1,4-benzene-dipyrazolate) are shown to exhibit methane adsorption isotherms that feature a sharp step, giving rise to unprecedented performance characteristics for ambient temperature methane storage. Adsorption measurements combined with in situ powder X-ray diffraction and microcalorimetry experiments performed on Co(bdp) demonstrate a new approach to designing adsorbents for gas storage, wherein a reversible phase transition is used to achieve a high deliverable capacity while providing intrinsic thermal management. Importantly, the energy of the phase transition, together with the adsorption and desorption step pressures, can be controlled through variations in the framework structure, such as replacing Co with Fe, or by application of mechanical pressure. This approach overcomes many of the challenges to developing adsorbents for natural gas storage discussed in Chapter Three and is also relevant to other gas storage applications. Chapter Six discusses the synthesis and characterization of a new Ti(III) metal-organic framework that is constructed from 1,4-benzenedicarboxylate bridged Ti3O(COO)6 clusters. While many metal-organic frameworks have been synthesized with exposed divalent metal cations, there are comparatively few examples of metal-organic frameworks with coordinatively unsaturated trivalent metal centers. Among other potential applications, frameworks with exposed trivalent metal cations are of particular interest for ambient temperature H2 storage. Additionally, there are also very few reported titanium-based metal-organic frameworks and none that contain all titanium(III). Through a combination of adsorption measurements, diffraction analysis, EPR, infrared, and UV-vis-NIR spectroscopies, and magnetic measurements, this framework is shown to contain five-coordinate Ti3+ cations that irreversibly bind O2 to form titanium(IV)-superoxo and -peroxo species.
Book Synopsis Adsorption on Activated Carbon of Hydrogen, Methane and Carbon Dioxide Gases and Their Mixtures at 212 K to 301 K and Up to Thirty-five Atmospheres by : Kenneth Alfred Rogers
Download or read book Adsorption on Activated Carbon of Hydrogen, Methane and Carbon Dioxide Gases and Their Mixtures at 212 K to 301 K and Up to Thirty-five Atmospheres written by Kenneth Alfred Rogers and published by . This book was released on 1973 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterisation of Metal-organic Frameworks with Inherent Functionalisation for Carbon Capture Methods by : Craig Alan McAnally
Download or read book Characterisation of Metal-organic Frameworks with Inherent Functionalisation for Carbon Capture Methods written by Craig Alan McAnally and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Capture offers potential remediation for greenhouse gases from industrial point sources, and physical sorbents are an economically viable option, but one that requires optimisation. Here, materials were investigated to assess the effect of incorporation of functionalised ligands, which utilise a Lewis basic character, on the potential of such materials for Carbon Capture applications. Materials were investigated for their structural and adsorptive properties, allowing analysis and evaluation of the selective capture of carbon dioxide. Characterisation included single crystal X-ray diffraction, powder X-ray diffraction, infrared spectroscopy, thermogravimetric analysis, and elemental analysis. Adsorption properties were evaluated using volumetric nitrogen adsorption at 77 K, which showed all three materials experienced activated diffusion, and gravimetric carbon dioxide adsorption at 273 K. Further gravimetric adsorption analysis was performed at various temperatures using carbon dioxide, methane, and nitrogen gases, to analyse the performance of these materials under simulated conditions for carbon capture processes. Thermodynamic and kinetic properties were determined in order to provide an indication of the underlying processes governing diffusion and equilibration of adsorption.Three materials were investigated; Cu(bpetha)2SiF6 (bpetha = 1,2-bis(4-pyridyl)ethane), [Cu(TPT)]BF4.0.75H2O and [Cu(TPT)]NO3.MeOH (TPT = 1,3,5-tris(4-pyridyl)-2,4,6-triazine). Cu(bpetha)2SiF6 showed promising results for carbon dioxide adsorption (0.6 mmol g−1 at 100 kPa and 333 K), having kinetically selective behaviour for nitrogen and methane at timescales that are suitable for pressure swing adsorption processing (90 %/5 % of equilibrium uptake for carbon dioxide vs. nitrogen in under 3 min). The material also showed enhanced adsorption interactions towards carbonvdioxide as a consequence of electronegative fluorine atoms within the structure, and also exhibited flexibility of the framework towards carbon dioxide. [Cu(TPT)]BF4.0.75H2O showed poor adsorption capabilities for carbon dioxide (0.15 mmol g−1 at 100kPa and 333 K), which is ascribed to pore blocking effects of the anion within the structure. [Cu(TPT)]NO3.MeOH showed moderate uptakes for CO2 at low temperatures (1.96 mmol g−1 maximum capacity at 273 K), but demonstrated better adsorption capabilities for methane at higher temperatures (1.54 mmol g−1 at 100 kPa and 333 K). The framework experienced a large structural change upon adsorption, which was probed using methane at different temperatures.The results of this study showed that materials synthesised with inherent functionalisation could be developed to enhance carbon dioxide adsorption for Carbon Capture applications. However, other structural effects of the materials must be considered as the complexity of Metal-Organic Framework structures can influence the adsorption properties via a variety of mechanisms.
Book Synopsis Adsorption of Methane and Carbon Dioxide on Activated Carbon and Metal Organic Frameworks by : Chutima Sudsuansi
Download or read book Adsorption of Methane and Carbon Dioxide on Activated Carbon and Metal Organic Frameworks written by Chutima Sudsuansi and published by . This book was released on 2018 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural gas has gain popularity for transportation among other fuels since it is the cleanest burning fossil fuel. However, the important challenge for utilizing natural gas is its comparatively low volumetric energy storage density. Consequently, a suitable natural gas storage is needed. Adsorbed natural gas (ANG) is an interesting alternative because it could be expected to reduce the cost and potential damage from compressed natural gas (CNG) and liquefied natural gas (LNG) technology. Comparative adsorption of methane and carbon dioxide on activated carbon ZIF-8, UiO-66, and MIL-53 (Al) was investigated at 35 °C and up to 100 psi. The addition of PVDF in ZIF-8 and activated carbon were also studied including 75 wt% ZIF-8, 50 wt% ZIF-8, 25 wt% ZIF-8, 50 wt% ZIF-8, and 25 wt% ZIF-8. The result shows that the methane and carbon dioxide adsorption increase with the pressure. MIL-53 shows the highest methane and carbon dioxide adsorption. The high surface area and micropore volume corresponds to the high methane and carbon dioxide adsorption. However, the high micropore volume to total pore volume ratio also contributes to higher methane adsorption in the case of ZIF-8 and UiO-66. ZIF-8 has higher methane adsorption than UiO-66 although they have about the same surface area and micropore volume. On the contrary, UiO-66 has higher carbon dioxide adsorption than ZIF-8 affecting from chemical properties such as an open metal site and an organic ligand. Moreover, ZIF-8 has the highest CH4/CO2 selectively because it has high surface area, high micropore volume, high micropore volume to total pore volume ratio, and proper open metal site and organic ligand.
Book Synopsis Carbon Dioxide Adsorption by Metal Organic Frameworks (synthesis, Testing and Modeling) by : Rana Sabouni
Download or read book Carbon Dioxide Adsorption by Metal Organic Frameworks (synthesis, Testing and Modeling) written by Rana Sabouni and published by . This book was released on 2013 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is essential to capture carbon dioxide from flue gas because it is considered one of the main causes of global warming. Several materials and various methods have been reported for the CO2 capturing including adsorption onto zeolites, porous membranes, and absorption in amine solutions. All such methods require high energy input and high cost. New classes of porous materials called Metal Organic Frameworks (MOFs) exhibit excellent performance in capturing carbon dioxide from a gas mixture. In the course of the current research, a novel MOF synthesis method using combined microwave and ultrasound, and microwave only was introduced and successfully applied to synthesize two different MOFs named IRMOF-1 and CPM-5. The scope of the research focuses on: 1) synthesis of two different MOFs (e.g. IRMOF-1 and CPM-5) using innovative non-traditional methods including microwave and ultrasound irradiation, and employing the optimization of three synthes is conditions: synthesis temperature, time and solvent ratio, 2) testing the MOFs for carbon dioxide adsorption to obtain the adsorption properties such as adsorption equilibrium isotherm, CO2 diffusivity coefficient, adsorption kinetics and isosteric heat of adsorption, 3) testing of the best MOF for CO2 adsorption using fixed bed adsorption micro-reactor column configuration at different experimental conditions such as adsorption temperature, feed concentration and feed flowrate, 4) modeling of the breakthrough curve using COMSOL simulation and comparing it with the experimental breakthrough curves. The microwave irradiations drastically reduce the synthesis time of CPM-5 samples from 5 days using a traditional method (e.g. conventional oven) to 10 min. The outcome of the research indicated that the IRMOF-1 and CPM-5 samples synthesized using the novel synthesis methods exhibit unique properties compared to traditional synthesis method. The improved properties of the final product such as: lower particle size and narrower size distribution, more constructed crystallites, high surface area, high CO2 adsorption isotherm capacity (e.g. 2.3 mmol CO2/ g), high selectivity factor of CO2 over N2 (e.g 16.1 at 298 K), low isosteric heat of adsorption, and a high CO2 dynamic adsorption capacity (e.g. 11.9 wt. % at 298 K), were noted. As a result the microwave synthesized CPM-5 samples can be considered as an attractive adsorbent for the separation of CO2 from flue gas.
Book Synopsis Metal-Organic Framework Materials by : Leonard R. MacGillivray
Download or read book Metal-Organic Framework Materials written by Leonard R. MacGillivray and published by John Wiley & Sons. This book was released on 2014-09-19 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Organic Frameworks (MOFs) are crystalline compounds consisting of rigid organic molecules held together and organized by metal ions or clusters. Special interests in these materials arise from the fact that many are highly porous and can be used for storage of small molecules, for example H2 or CO2. Consequently, the materials are ideal candidates for a wide range of applications including gas storage, separation technologies and catalysis. Potential applications include the storage of hydrogen for fuel-cell cars, and the removal and storage of carbon dioxide in sustainable technical processes. MOFs offer the inorganic chemist and materials scientist a wide range of new synthetic possibilities and open the doors to new and exciting basic research. Metal-Organic Frameworks Materials provides a solid basis for the understanding of MOFs and insights into new inorganic materials structures and properties. The volume also reflects progress that has been made in recent years, presenting a wide range of new applications including state-of-the art developments in the promising technology for alternative fuels. The comprehensive volume investigates structures, symmetry, supramolecular chemistry, surface engineering, recognition, properties, and reactions. The content from this book will be added online to the Encyclopedia of Inorganic and Bioinorganic Chemistry: http://www.wileyonlinelibrary.com/ref/eibc
Book Synopsis Gas Adsorption Applications of Porous Metal-organic Frameworks by : Shengqian Ma
Download or read book Gas Adsorption Applications of Porous Metal-organic Frameworks written by Shengqian Ma and published by . This book was released on 2008 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porous metal-organic frameworks (MOFs) represent a new type of functional materials and have been found to exhibit great potential in various applications such as catalysis, magnetism, gas storage/separation etc. This dissertation details the investigation of porous MOFs for gas adsorption applications, including hydrogen storage, methane storage, and selective gas adsorption. The first section evaluates porous MOFs as promising candidates for hydrogen storage application. It discusses various strategies to improve hydrogen uptakes in porous MOFs, which includes mimicking hemoglobin to create entatic metal centers in PCN-9 resulting in a high hydrogen heat of adsorption of 10.1 kJ/mol, functionalizing the organic ligand with fused aromatic rings to achieve high hydrogen adsorption capacity of 2.7 wt% in PCN-14 at 77 K and 1 bar, and utilizing catenation to generate PCN-6 with a hydrogen uptake of 9.5 wt% (absolute, at 77 K and 50 bar) as well as a surface area of 3800 m2/g in. The second section discusses methane storage applications of porous MOFs. Constructed from a pre-designed ligand, the porous MOF, PCN-14 exhibits the highest methane uptake capacity among currently reported materials with a value of 230 v/v (absolute, at ambient temperature and 35 bar), which is 28% higher than the US DOE target (180 v/v) for methane storage. Thethird section addresses microporous MOFs as molecular sieves for selective gas adsorption application. Increasing the bulkiness of the struts and introducing coordinatively linked interpenetration restrict the pore sizes of PCN-13 and PCN-17 respectively to scelectively adsorb oxygen and hydrogen over nitrogen and carbon monoxide. Based on some amphiphilic ligands, a series of mesh-adjustable molecular sieves, whose pore sizes can be continuously tuned from 2.9 to 5.0 angstrom, have been designed for various gas separation applications.
Book Synopsis Design and Screening of Hypothetical Charged Metal-organic Frameworks for Carbon Dioxide Capture by : Jason Wai-Ho Lo
Download or read book Design and Screening of Hypothetical Charged Metal-organic Frameworks for Carbon Dioxide Capture written by Jason Wai-Ho Lo and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Reducing anthropogenic carbon dioxide emissions from coal-fired power plants is an important step in mitigating climate change. To implement carbon dioxide capture technologies, materials capable of removing carbon dioxide efficiently are required. Currently, liquid amine technology is used for carbon dioxide capture. However, the mechanism for carbon dioxide removal in liquid amine requires extraordinary amounts of energy input. Alternatively, solid sorbents such as metal-organic frameworks (MOFs) show promising potentials as a type of material for carbon dioxide capture. Due their varying structural properties, MOFs can be configured for specific purposes. Certain MOFs carry a net charge on their frameworks, which may allow for increased interactions with carbon dioxide molecules. In this work, charged MOFs were studied for their potential in carbon dioxide capture. Due to the massive number of MOFs available, computational methods were employed for the study. This project includes three major components: (1) the development of novel computational methods to simulate the gas adsorption properties in charged materials, (2) a diverse database of 47,244 hypothetical charged MOFs was constructed to represent the capabilities of charged MOFs, and (3) screening of high performing charged MOFs for carbon capture application by combining the previous two portions of the project. The methods developed in this work include fitting intermolecular interaction parameters to quantum mechanical calculations in periodic systems with net charges. No methods have been reported in literature for such parameter fittings, even in well studied materials such as zeolites. Therefore, the gas adsorption estimation method for charged materials developed in this work is proprietary. Also, databases of hypothetical MOFs with framework net charges have never been reported previously in literature. By screening the charged MOFs in the database with the methods developed, gas adsorption capabilities were evaluated. The adsorption properties of a neutral group of hypothetical MOFs were also obtained for a baseline comparison. Between the two groups of MOFs, charged MOFs were found to outperform neutral MOFs in three key aspects. Firstly, charged MOFs were able to adsorb an average of three times as much carbon dioxide than the neutral group. Secondly, charged MOFs were capable of removing twice the amount of carbon dioxide per adsorption/desorption cycle than the neutral MOFs. Lastly, charged MOFs were able to selectively adsorb much more carbon dioxide over other gasses present in the carbon dioxide capture situations. Specific structural features that resulted in the selectiveness of adsorption in charged MOFs were identified. Also, positive correlations were found between the adsorption of carbon dioxide and the charge present in the MOFs. As seen in the results, charges present in MOFs can greatly increase their ability to remove carbon dioxide. Charged MOFs in the hypothetical database not only outperformed neutral MOFs, certain top performers were also found to exceed the requirements for post-combustion carbon capture application. Therefore, charged MOFs were shown to be a possible material for future carbon dioxide capture. The proprietary methods developed in this work can not only be used to simulate gas adsorptions in charged MOFs, but also for other porous materials, regardless of net charges presented in their systems. Also, the database constructed in this work can be utilized in multiple ways. Aside from carbon dioxide capture capabilities, the charged MOFs in the database can be screened for other gas separations and catalysis via high throughput screening. The database and the computational methods developed in this work pave the way for discovering the capabilities of charged materials.
Book Synopsis Amine Functionalised Metal-organic Frameworks for Carbon Dioxide Capture by : Christin Patzschke
Download or read book Amine Functionalised Metal-organic Frameworks for Carbon Dioxide Capture written by Christin Patzschke and published by . This book was released on 2014 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption-based methods, such as pressure swing adsorption (PSA) or vacuum swing adsorption (VSA), are promising for capturing CO2 from natural gas or flue gas. CO2 adsorbents take a variety of forms, but one approach is the use of metal-organic frameworks (MOFs). These have attracted tremendous attention over the past decade due their porosity, high surface area, high pore volume, tuneable pore sizes and topologies. Previous studies on adsorbents of this type, such as CPO-27(Mg), HKUST-1, MOF-177 or MIL-101, have reported good CO2 adsorption capacities. Moreover, through introducing specific polar groups onto the organic linker or by grafting components onto coordinatively unsaturated sites (CUS) of specific MOFs, increases in the CO2 affinity have been observed, particularly at low pressure. This project investigated the potential of MOFs for post-combustion carbon capture and high pressure separation processes. Two classes of MOFs were chosen:1)MOFs containing CUS, which allow further postsynthetic modification (PSM) by grafting/impregnating these materials with amines.2)Flexible MOFs, due to their good selectivities and high CO2 capacities.Enhanced CO2 capacities were sought by two approaches or a combination of both: (i) prefunctionalisation of MIL-53 and MIL-101 (where substituent groups are incorporated into the linker unit before MOF construction) and (ii) postsynthetic modification (PSM) of MIL-100 and MIL-101 (where substituents like ethylenediamine (ED), diethylenetriamine (DETA), 2nd generation polypropylenimine actamine dendrimer (DAB-AM-8) and polyethyleneimine (PEI) are added after MOF construction).
Book Synopsis Adsorption on Metal-Organic Frameworks by : Dirk Otter
Download or read book Adsorption on Metal-Organic Frameworks written by Dirk Otter and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adsorption Equilibrium and Mass Transfer in Metal-organic Frameworks and Adsorption on Carbon Surfaces in the Henry's Law Region by : Jian Liu
Download or read book Adsorption Equilibrium and Mass Transfer in Metal-organic Frameworks and Adsorption on Carbon Surfaces in the Henry's Law Region written by Jian Liu and published by . This book was released on 2011 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Simulation Studies of Gas Adsorption and Separation in Metal-organic Frameworks by : Peyman Zoroufchian Moghadam
Download or read book Molecular Simulation Studies of Gas Adsorption and Separation in Metal-organic Frameworks written by Peyman Zoroufchian Moghadam and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption in porous materials plays a significant role in industrial separation processes. Here, the host-guest interaction and the pore shape influence the distribution of products. Metal-organic frameworks (MOFs) are promising materials for separation purposes as their diversity due to their building block synthesis from metal corners and organic linker gives rise to a wide range of porous structures. The selectivity differs from MOF to MOF as the size and shapes of their pores are tuneable by altering the organic linkers and thus changing the host-guest interactions in the pores. Using mainly molecular simulation techniques, this work focuses on three types of separations using MOFs. Firstly, the experimental incorporation of calix[4]arenes in MOFs as a linker to create additional adsorption sites is investigated. For a mixture of methane and hydrogen, it is shown that in the calix[4]arene-based MOFs, methane is adsorbed preferentially over hydrogen with much higher selectivities compared to other MOFs in the literature. Remarkably, it was shown that extra voids created by calix[4]arene-based linkers, were accessible to only hydrogen molecules. Secondly, the strong correlation between different pore sizes and shapes in MOFs and their capabilities to separate xylene isomers were investigated for a number of MOFs. Finally, the underlying molecular mechanism of enantioseparation behaviour in a homochiral MOF for a number of chiral diols is presented. The simulation results showed good agreement with experimental enantioselectivity values. It was observed that high enantioselectivity occurs only at high loadings and when a perfect match in terms of size and shape exists between the pore size and the adsorbates. Ultimately, the information obtained from molecular simulations will further our understanding of how network topology, pore size and shape in MOFs influence their performance as selective adsorbents for desired applications.
Book Synopsis Adsorption of Environmentally Significant Gases (H2, CO2, H2O, CH4) in Metal-organic Frameworks by : Andrew R. Millward
Download or read book Adsorption of Environmentally Significant Gases (H2, CO2, H2O, CH4) in Metal-organic Frameworks written by Andrew R. Millward and published by . This book was released on 2006 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metal-Organic Frameworks by : Leonard R. MacGillivray
Download or read book Metal-Organic Frameworks written by Leonard R. MacGillivray and published by John Wiley & Sons. This book was released on 2010-12-17 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-organic frameworks represent a new class of materials that may solve the hydrogen storage problem associated with hydrogen-fueled vehicles. In this first definitive guide to metal-organic framework chemistry, author L. MacGillivray addresses state-of-art developments in this promising technology for alternative fuels. Providing professors, graduate and undergraduate students, structural chemists, physical chemists, and chemical engineers with a historical perspective, as well as the most up-to-date developments by leading experts, Metal-Organic Frameworks examines structure, symmetry, supramolecular chemistry, surface engineering, metal-organometallic frameworks, properties, and reactions.
