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Theoretical Investigation Of The Selective Catalytic Reduction Of Nitrogen Oxides With Ammonia On Fe H Zsm5
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Book Synopsis Theoretical Investigation of the Selective Catalytic Reduction of Nitrogen Oxides with Ammonia on Fe/H-ZSM5 by : Till Brüggemann
Download or read book Theoretical Investigation of the Selective Catalytic Reduction of Nitrogen Oxides with Ammonia on Fe/H-ZSM5 written by Till Brüggemann and published by . This book was released on 2012 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Catalytic Reduction (SCR) of Nitrogen Oxides with Ammonia Over Fe-ZSM5 by : Mukundan Devadas
Download or read book Selective Catalytic Reduction (SCR) of Nitrogen Oxides with Ammonia Over Fe-ZSM5 written by Mukundan Devadas and published by . This book was released on 2006 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Catalytic Reduction of NOx by : Oliver Kröcher
Download or read book Selective Catalytic Reduction of NOx written by Oliver Kröcher and published by MDPI. This book was released on 2018-12-14 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Selective Catalytic Reduction of NOx" that was published in Catalysts
Book Synopsis Selective Catalytic Reduction (SCR) of Nitric Oxide with Ammonia Using Cu-ZSM-5 and Va-based Honeycomb Monolith Catalysts by : Saurabh Gupta
Download or read book Selective Catalytic Reduction (SCR) of Nitric Oxide with Ammonia Using Cu-ZSM-5 and Va-based Honeycomb Monolith Catalysts written by Saurabh Gupta and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the steady-state performance of zeolite-based (Cu-ZSM-5) and vanadium-based honeycomb monolith catalysts was investigated in the selective catalytic reduction process (SCR) for NO removal using NH3. The aim was to delineate the effect of various parameters including pretreatment of the catalyst sample with H2, NH3-to-NO ratio, inlet oxygen concentration, and space velocity. The concentrations of the species (e.g. NO, NH3, and others) were determined using a Fourier Transform Infrared (FTIR) spectrometer. The temperature was varied from ambient (25 C) to 500 C. The investigation showed that all of the above parameters (except pre-treatment with H2) significantly affected the peak NO reduction, the temperature at which peak NO reduction occurred, and residual ammonia left at higher temperatures (also known as 'NH3 slip'). Depending upon the particular values of the parameters, a peak NO reduction of around 90% was obtained for both the catalysts. However, an accompanied generation of N2O and NO2 species was observed as well, being much higher for the vanadium-based catalyst than for the Cu-ZSM-5 catalyst. For both catalysts, the peak NO reduction decreased with an increase in space velocity, and did not change significantly with an increase in oxygen concentration. The temperatures at which peak NO reduction and complete NH3 removal occurred increased with an increase in space velocity but decreased with an increase in oxygen concentration. The presence of more ammonia at the inlet (i.e. higher NH3-to-NO ratio) improved the peak NO reduction but simultaneously resulted in an increase in residual ammonia. Pretreatment of the catalyst sample with H2 (performed only for the Cu-ZSM-5 catalyst) did not produce any perceivable difference in any of the results for the conditions of these experiments.
Book Synopsis Multiscale Molecular Methods in Applied Chemistry by : Barbara Kirchner
Download or read book Multiscale Molecular Methods in Applied Chemistry written by Barbara Kirchner and published by Springer Science & Business Media. This book was released on 2012-01-25 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: First-Principles-Based Multiscale, Multiparadigm Molecular Mechanics and Dynamics Methods for Describing Complex Chemical Processes, by A. Jaramillo-Botero, R. Nielsen, R. Abrol, J. Su, T. Pascal, J. Mueller and W. A. Goddard.- Dynamic QM/MM: A Hybrid Approach to Simulating Gas–Liquid Interactions, by S. Yockel and G. C. Schatz.- Multiscale Modelling in Computational Heterogeneous Catalysis, by F. J. Keil.- Real-World Predictions from Ab Initio Molecular Dynamics Simulations, by B. Kirchner, P. J. di Dio and J. Hutter.- Nanoscale Wetting Under Electric Field from Molecular Simulations, by C. D. Daub, D. Bratko and A. Luzar.- Molecular Simulations of Retention in Chromatographic Systems: Use of Biased Monte Carlo Techniques to Access Multiple Time and Length Scales, by J. L. Rafferty, J. I. Siepmann, M. R. Schure.- Thermodynamic Properties for Applications in Chemical Industry via Classical Force Fields, by G. Guevara-Carrion, H. Hasse and J. Vrabec.- Multiscale Approaches and Perspectives to Modeling Aqueous Electrolytes and Polyelectrolytes, by L. Delle Site, C. Holm and N. F. A. van der Vegt.- Coarse-Grained Modeling for Macromolecular Chemistry, by H. A. Karimi-Varzaneh and F. Müller-Plathe.-
Book Synopsis A Superior Fe/ZSM-5 Catalyst for Selective Catalytic Reduction (SCR) of Nitric Oxide with Ammonia by : Gongshin Qi
Download or read book A Superior Fe/ZSM-5 Catalyst for Selective Catalytic Reduction (SCR) of Nitric Oxide with Ammonia written by Gongshin Qi and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Springer Handbook of Advanced Catalyst Characterization by : Israel E. Wachs
Download or read book Springer Handbook of Advanced Catalyst Characterization written by Israel E. Wachs and published by Springer Nature. This book was released on 2023-06-12 with total page 1109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Co-edited by world-renowned scientists in the field of catalysis, this book contains the cutting-edge in situ and operando spectroscopy characterization techniques operating under reaction conditions to determine a materials’ bulk, surface, and solution complex and their applications in the field of catalysis with emphasis on solid catalysts in powder form since such catalyst are relevant for industrial applications. The handbook covers from widely-used to cutting-edge techniques. The handbook is written for a broad audience of students and professionals who want to pursue the full capabilities available by the current state-of-the-art in characterization to fully understand how their catalysts really operate and guide the rational design of advanced catalysts. Individuals involved in catalysis research will be interested in this handbook because it contains a catalogue of cutting-edge methods employed in characterization of catalysts. These techniques find wide use in applications such as petroleum refining, chemical manufacture, natural gas conversion, pollution control, transportation, power generation, pharmaceuticals and food processing. fdsfds
Book Synopsis Computational Insights Into the Mechanism of the Selective Catalytic Reduction of NOx: Fe- Versus Cu-Exchanged Zeolite Catalysts by : Julian Rudolph
Download or read book Computational Insights Into the Mechanism of the Selective Catalytic Reduction of NOx: Fe- Versus Cu-Exchanged Zeolite Catalysts written by Julian Rudolph and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We computationally investigate the mechanism of the reduction half-cycle of the selective catalytic reduction of nitrogen oxides with ammonia. We compare both Fe- and Cu-exchanged zeolite catalysts and aim at exploring all accessible reaction pathways. From our calculations, a comprehensive picture emerges that unifies several previous mechanistic proposals. We find that both for Fe and for Cu catalysts different reaction pathways are feasible but some of the possible reaction pathways differ in these two cases. Our computational results provide a basis for the interpretation of in situ spectroscopic investigations that can possibly distinguish the different mechanistic pathways.
Book Synopsis X-Ray Absorption and X-Ray Emission Spectroscopy by : Jeroen A. van Bokhoven
Download or read book X-Ray Absorption and X-Ray Emission Spectroscopy written by Jeroen A. van Bokhoven and published by John Wiley & Sons. This book was released on 2016-03-21 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last two decades, remarkable and often spectacular progress has been made in the methodological and instrumental aspects of x–ray absorption and emission spectroscopy. This progress includes considerable technological improvements in the design and production of detectors especially with the development and expansion of large-scale synchrotron reactors All this has resulted in improved analytical performance and new applications, as well as in the perspective of a dramatic enhancement in the potential of x–ray based analysis techniques for the near future. This comprehensive two-volume treatise features articles that explain the phenomena and describe examples of X–ray absorption and emission applications in several fields, including chemistry, biochemistry, catalysis, amorphous and liquid systems, synchrotron radiation, and surface phenomena. Contributors explain the underlying theory, how to set up X–ray absorption experiments, and how to analyze the details of the resulting spectra. X-Ray Absorption and X-ray Emission Spectroscopy: Theory and Applications: Combines the theory, instrumentation and applications of x-ray absorption and emission spectroscopies which offer unique diagnostics to study almost any object in the Universe. Is the go-to reference book in the subject for all researchers across multi-disciplines since intense beams from modern sources have revolutionized x-ray science in recent years Is relevant to students, postdocurates and researchers working on x-rays and related synchrotron sources and applications in materials, physics, medicine, environment/geology, and biomedical materials
Book Synopsis Investigation of the Kinetics of No Reduction by Ammonia on an Automotive Catalyst by :
Download or read book Investigation of the Kinetics of No Reduction by Ammonia on an Automotive Catalyst written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As lean-burn engines are being introduced in the United States, both advantages and disadvantages arise. Lean-burn engines can operate at a high efficiency, and are developed for a wide range of power supplies. Unfortunately, due to the low temperature at which these engines operate, NO[subscript x] formation becomes an issue. Forthcoming legislation pertaining to heavy-duty lean-burn engines aimed at reducing both particulate matter emissions and emissions of nitric oxides has brought about a need for a better method for reducing NO[subscript x] from lean exhaust gases at moderate temperatures. It is generally accepted that current fuel treatment processes alone will be unable to accommodate emission standards proposed for upcoming years. While the current 3-way catalyst is ineffective in reducing NO[subscript x] under lean conditions, many new strategies are being developed. The Lean NO[subscript x] Catalyst (LNC), Lean NO[subscript x] Trap (LNT), and Selective Catalytic Reduction (SCR) catalyst are all viable methods with research underway. Currently, the selective catalytic reduction (SCR) of nitrogen oxides by N-containing reducing agents is one of the most powerful methods for accomplishing the removal of NO[subscript x] from an exhaust stream. This technology has been in place in steady state power plants, but has yet to be fully implemented in mobile engines. This is due in part to the problems encountered in the automated control of ammonia addition to the exhaust gas. In steady state operation, a relatively constant amount of NO[subscript x] is produced over a given amount of time. Thus, to provide a stoichiometric amount of ammonia only the steady state concentration of NO[subscript x] must be known. In an automotive application the NO[subscript x] produced is not constant and the addition of ammonia must vary accordingly. The purpose of this thesis is to explore the SCR process of the reaction between NO and NH3 through an experimental matrix and also through a kinetic study extracted from the results. These results are used in a simple theoretical model of the SCR reaction. The use of NO as the only form of NO[subscript x] allows for the kinetics of the NO reaction to be studied separately from the NO2 kinetics. This will be a first step in understanding the overall SCR process involving both NO and NO2. The SCR process for the reaction between NO and NH3, while understood on a global scale, is still under debate at the elementary level. It is currently thought that the reaction occurs according to an Eley-Rideal mechanism, where strongly absorbed ammonia reacts with weakly absorbed or gas phase NO to produce nitrogen and water. It is generally accepted that this reaction proceeds in first order with respect to nitric oxide and zero order with respect to ammonia and oxygen.
Book Synopsis Selective Catalytic Reduction of NO with Ammonia Over Nanostructure H-ZSM-5 Supported Transition Metal Oxide Catalysts by : A. Niaei
Download or read book Selective Catalytic Reduction of NO with Ammonia Over Nanostructure H-ZSM-5 Supported Transition Metal Oxide Catalysts written by A. Niaei and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selective Catalytic Reduction of Nitric Oxide by Ammonia Over Iron Exchanged Y Zeolites by : Michael Dimitrios Amiridis
Download or read book Selective Catalytic Reduction of Nitric Oxide by Ammonia Over Iron Exchanged Y Zeolites written by Michael Dimitrios Amiridis and published by . This book was released on 1991 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Theoretical Investigation of Mixing Effects in the Selective Reduction of Nitric Oxide by Ammonia by : M. C. Branch
Download or read book A Theoretical Investigation of Mixing Effects in the Selective Reduction of Nitric Oxide by Ammonia written by M. C. Branch and published by . This book was released on 1981 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Selective Catalytic Reduction of Nitric Oxide with Ammonia by : Hans Bosch
Download or read book The Selective Catalytic Reduction of Nitric Oxide with Ammonia written by Hans Bosch and published by . This book was released on 1987 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Catalytic Chemistry of Nitrogen Oxides by : Richard L. Klimisch
Download or read book The Catalytic Chemistry of Nitrogen Oxides written by Richard L. Klimisch and published by Springer. This book was released on 1975-09 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Good,No Highlights,No Markup,all pages are intact, Slight Shelfwear,may have the corners slightly dented, may have slight color changes/slightly damaged spine.
Book Synopsis Experimental Investigation of a Dual-catalyst for the Selective Catalytic Reduction of Nitric Oxide with Ammonia by : Frank G. Medros
Download or read book Experimental Investigation of a Dual-catalyst for the Selective Catalytic Reduction of Nitric Oxide with Ammonia written by Frank G. Medros and published by . This book was released on 1987 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In Situ Mössbauer Spectroscopic Studies of Iron-exchanged Y-zeolite Catalysts for the Selective Catalytic Reduction (with Ammonia) and Direct Decomposition of Nitric Oxide by : Ralf Schmidt
Download or read book In Situ Mössbauer Spectroscopic Studies of Iron-exchanged Y-zeolite Catalysts for the Selective Catalytic Reduction (with Ammonia) and Direct Decomposition of Nitric Oxide written by Ralf Schmidt and published by . This book was released on 1991 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
