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Author : Bryan Olthof
Publisher :
ISBN 13 :
Total Pages : 176 pages
Book Rating : 4.:/5 (34 download)
Download or read book Characterization of Supported Vanadium Oxide Catalysts written by Bryan Olthof and published by . This book was released on 1998 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas John Curtis
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.3/5 (129 download)
Download or read book Preparation and Characterization of Vanadium Oxide/aluminum Antimonate and Supported Antimony Oxide Catalysts written by Thomas John Curtis and published by . This book was released on 1993 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Baltes
Publisher :
ISBN 13 :
Total Pages : 233 pages
Book Rating : 4.:/5 (91 download)
Download or read book Synthesis and Characterization of Vanadium Oxide Catalysts written by Michael Baltes and published by . This book was released on 2001 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Andrew Vuurman
Publisher :
ISBN 13 :
Total Pages : 167 pages
Book Rating : 4.:/5 (659 download)
Download or read book Spectroscopic Characterization of Supported Metal Oxide Catalysts written by Michael Andrew Vuurman and published by . This book was released on 1992 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R.A. van Santen
Publisher : Elsevier
ISBN 13 : 9780444505934
Total Pages : 646 pages
Book Rating : 4.5/5 (59 download)
Download or read book Catalysis: An Integrated Approach written by R.A. van Santen and published by Elsevier. This book was released on 2000-09-26 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book concentrates on industrially relevant reactions which are catalyzed by heterogeneous and homogeneous catalysts. Homogeneous catalysis by metal complexes is treated jointly with heterogeneous catalysis using metallic and non-metallic solids. In both areas the high degree of sophistication of spectroscopic techniques and theoretical modelling has led to an enormous increase in our understanding at the molecular level. This holds for the kinetics of the reactions and the reactivities of the catalysts, as well as for the syntheses of the catalytic materials. The development of catalysis science since the first edition of this book has necessitated a thorough revision, including special chapters on biocatalysis, catalyst characterization and adsorption methods. The multidisciplinary nature of catalysis is reflected in the choice of a novel combination of basic disciplines which will be refreshing and inspiring to readers.
Author : Israel E. Wachs
Publisher : Springer Nature
ISBN 13 : 3031071255
Total Pages : 1109 pages
Book Rating : 4.0/5 (31 download)
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
Author : Alyssa Marie Love
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (124 download)
Download or read book Fundamental Studies on the Structure of Surface Oxide Sites on Supported Oxidative Dehydrogenation Catalysts written by Alyssa Marie Love and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structure of metal oxide sites on supported metal oxide catalysts has a significant impact on the performance of the catalyst. For example, silica-supported vanadium oxide-a catalyst widely studied for the oxidative dehydrogenation of propane (ODHP) to propene-has a higher selectivity towards propene when the catalyst surface is comprised of primarily dispersed VOx surface species. Conversely, as the loading of vanadium oxide is increased beyond the monolayer coverage threshold, three-dimensional V2O5 particles begin to form which lower the catalyst selectivity towards propene (at higher propane conversions) in favor of COx combustion products. For this catalytic application and for other supported metal oxides, understanding the variables that maximize the dispersion of two-dimensional metal oxide species on a support surface is invaluable information to improve the preparation of these catalysts. This thesis describes the synthesis and detailed characterization of supported oxide catalysts for the oxidative dehydrogenation of catalysts. In this work, vapor-phase grafting techniques were used to investigate the chemical reactions that occur during the synthesis of silica-supported vanadium oxide ODH catalysts. By depositing the neat vanadium precursor, VO(OiPr)3, onto silica dehydrated at 700 degrees C (called V/SiO2(700)), the complexity of variables in the synthesis was significantly decreased (compared to incipient wetness). Key anchoring and restructuring reactions during the formation of vanadium oxide sites on silica were characterized with a combination of infrared (IR), Raman, solid-state nuclear magnetic resonance (NMR), and X-Ray absorption spectroscopic studies, in addition to thermogravimetric analysis-differential scanning calorimetry-mass spectrometry (TGA-DSC-MS), inductively coupled plasma (ICP) elemental analysis, etc. Afterwards, key synthesis variables (i.e., isopropanol solvent, H-bonded silanols and Na+ ions on the support surface) were incorporated into this grafting system to develop a more comprehensive model for the dispersion of vanadium oxide under wet impregnation conditions. Efforts to improve Raman sensitivity towards metal oxide surface sites with shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) are also addressed in this work. The methodology and characterization approach presented for the study of supported vanadium oxide catalysts was also applied to the study of promising new ODHP catalysts, including hexagonal boron nitride and silica-supported boron oxide catalysts.
Author : Gregory Thomas Went
Publisher :
ISBN 13 :
Total Pages : 428 pages
Book Rating : 4.:/5 (33 download)
Download or read book Studies of Supported Vanadium Oxide Catalysts for the Selective Catalytic Reduction of Nitrogen Oxides written by Gregory Thomas Went and published by . This book was released on 1991 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pei Meng Woi
Publisher :
ISBN 13 :
Total Pages : 260 pages
Book Rating : 4.:/5 (975 download)
Download or read book Characterization of Molybdenum-vanadium Oxide Catalyst Prepared by Homogeneous Precipitation Method Using Urea Hydrolysis written by Pei Meng Woi and published by . This book was released on 2007 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : José A. Rodriguez
Publisher : John Wiley & Sons
ISBN 13 : 1118355911
Total Pages : 488 pages
Book Rating : 4.1/5 (183 download)
Download or read book In-situ Characterization of Heterogeneous Catalysts written by José A. Rodriguez and published by John Wiley & Sons. This book was released on 2013-04-17 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helps researchers develop new catalysts for sustainable fueland chemical production Reviewing the latest developments in the field, this bookexplores the in-situ characterization of heterogeneous catalysts,enabling readers to take full advantage of the sophisticatedtechniques used to study heterogeneous catalysts and reactionmechanisms. In using these techniques, readers can learn to improvethe selectivity and the performance of catalysts and how to preparecatalysts as efficiently as possible, with minimum waste. In-situ Characterization of Heterogeneous Catalysts featurescontributions from leading experts in the field of catalysis. Itbegins with an introduction to the fundamentals and thencovers: Characterization of electronic and structural properties ofcatalysts using X-ray absorption fine structure spectroscopy Techniques for structural characterization based on X-raydiffraction, neutron scattering, and pair distribution functionanalysis Microscopy and morphological studies Techniques for studying the interaction of adsorbates withcatalyst surfaces, including infrared spectroscopy, Ramanspectroscopy, EPR, and moderate pressure XPS Integration of techniques that provide information on thestructural properties of catalysts with techniques that facilitatethe study of surface reactions Throughout the book, detailed examples illustrate how techniquesfor studying catalysts and reaction mechanisms can be applied tosolve a broad range of problems in heterogeneous catalysis.Detailed figures help readers better understand how and why thetechniques discussed in the book work. At the end of each chapter,an extensive set of references leads to the primary literature inthe field. By explaining step by step modern techniques for the in-situcharacterization of heterogeneous catalysts, this book enableschemical scientists and engineers to better understand catalystbehavior and design new catalysts for green, sustainable fuel andchemical production.
Author : Kadir Aydemir
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (889 download)
Download or read book Vanadium Oxide Based Materials as Oxidative Dehydrogenation Catalyst written by Kadir Aydemir and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Barbara Müller
Publisher :
ISBN 13 : 9783899636789
Total Pages : 195 pages
Book Rating : 4.6/5 (367 download)
Download or read book Synthesis and Structural Characterization of Vanadium Complexes Supported on Oxide and Fluoride Surfaces and Their Catalytic Properties in the Oxidative Dehydrogenation of Propane written by Barbara Müller and published by . This book was released on 2008 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chaing Shen Saw
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.:/5 (975 download)
Download or read book Modification and Characterization of Vanadium Phosphorus Oxide Catalysts for Selective Oxidation of Propane to Acrylic Acid written by Chaing Shen Saw and published by . This book was released on 2006 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Saadia Tabussum
Publisher :
ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.:/5 (577 download)
Download or read book Vanadium Oxide Based Materials written by Saadia Tabussum and published by . This book was released on 2004 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Characterization of Mixed Oxide Catalysts for the Selective Catlytic Reduction of Nitric Oxide from Stationary Sources Using Amonnia written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Seven first row transition metals were deposited on various commercial TiO2, SiO2, and Al2 O3 supports to create mono- and bimetallic catalysts that were compared in the selective catalytic reduction of nitric oxide using ammonia at low temperatures ranging from 373-523 K. The catalyst with the highest activity both in the absence and presence of water in the feed was 20 wt.% Mn/Hombikat TiO2 synthesized from a nitrate precursor and calcined below 673 K. Under those conditions, it was capable of achieving 100% NO conversion at 393 K. Numerous surface characterization techniques were used to identify the surface properties that result in highly active and selective low temperature SCR catalysts. The deposition of manganese as MnO2, the ease of reducibility of the metal oxide, and the symmetric deformation of ammonia coordinated to Lewis acid sites at 1167 cm−1, were all found to be important for good catalytic performance. No synergistic effects were observed from combinations of the three most active transition metals. However, MnO x -NiO/TiO2 had an extended lifetime relative to MnO x /TiO2 in feeds containing SO2 . The extensive data collected from in-situ FTIR experiments in the presence of NO and NH 3 were used to propose a reaction mechanism for MnO x /TiO2 that begins with the coordination of NH3 over Mn4 species and proceeds through the formation of bridged nitrates. A combination of potentiometric titrations and UV/Vis spectroscopy were used to quantify the reduction of V5 to V4 after the addition of oxalic acid as the solution is aged. After approximately four hours, the aging vanadium oxalate solution reaches steady state, and the final distribution of the vanadium present is 89% V+4 and 11% V+5 . TiO2 supported monolayer catalysts synthesized from the aged (V+4) vanadium oxalate solution consistently outperformed catalysts made from freshly prepared (V+5) vanadium oxalate solutions. Surface characterization revealed that surface acid sites increase in strength and vanadia reduces more easily in catalysts synthesized from aged vanadium oxalate solutions, which enhances reaction mechanism depends upon acid sites and redox operation.
Author : Boris Imelik
Publisher : Springer Science & Business Media
ISBN 13 : 1475795890
Total Pages : 720 pages
Book Rating : 4.4/5 (757 download)
Download or read book Catalyst Characterization written by Boris Imelik and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: to the Fundamental and Applied Catalysis Series Catalysis is important academically and industrially. It plays an essential role in the manufacture of a wide range of products, from gasoline and plastics to fertilizers and herbicides, which would otherwise be unobtainable or prohibitive ly expensive. There are few chemical-or oil-based material items in modern society that do not depend in some way on a catalytic stage in their manufacture. Apart from manufacturing processes, catalysis is finding other important and over-increasing uses; for example, successful applications of catalysis in the control ofpollution and its use in environmental control are certain to in crease in the future. The commercial import an ce of catalysis and the diverse intellectual challenges of catalytic phenomena have stimulated study by a broad spectrum of scientists including chemists, physicists, chemical engineers, and material scientists. Increasing research activity over the years has brought deeper levels of understanding, and these have been associated with a continually growing amount of published material. As recentlyas sixty years ago, Rideal and Taylor could still treat the subject comprehensively in a single volume, but by the 19 50s Emmett required six volumes, and no conventional multivolume text could now cover the whole of catalysis in any depth.
Author : Sangita Deb
Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (32 download)
Download or read book Synthesis and Characterization of Vanadium Oxide Based Nanostructured Materials and Their Application for Catalytic Oxidative Dehydration of Propane written by Sangita Deb and published by . This book was released on 2008 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
