Author: Ramkumar Perumal
Publisher:
ISBN:
Category : Butene
Languages : en
Pages : 144
Book Description
Selective Oxidation of C4 Hydrocarbons to Maleic Anhydride on V-P-O Catalysts
Author: Ramkumar Perumal
Publisher:
ISBN:
Category : Butene
Languages : en
Pages : 144
Book Description
Publisher:
ISBN:
Category : Butene
Languages : en
Pages : 144
Book Description
Model Vanadium-phosphorous-oxygen Catalysts for the Selective Oxidation of C4 Hydrocarbons to Maleic Anhydride
Author: Thomas Patrick Moser
Publisher:
ISBN:
Category :
Languages : en
Pages : 268
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 268
Book Description
Vanadium-phosphorous-oxygen Industrial Catalysts for C4 Hydrocarbon Selective Oxidation to Maleic Anhydride
In Situ Vibrational Spectroscopic Investigation of C4 Hydrocarbon Selective Oxidation Over Vanadium-phosphorus-oxide Catalysts
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
Book Description
N-Butane selective oxidation over the VPO catalyst to maleic anhydride is the first and only commercialized process of light alkane selective oxidation. The mechanism of this reaction is still not well known despite over twenty years of extensive studies, which can partially be attributed to the extreme difficulties to characterize catalytic reactions real-time under typical reaction conditions. In situ spectroscopic characterization techniques such as Infrared spectroscopy and laser Raman spectroscopy were used in the current mechanistic investigations of n-butane oxidation over VPO catalysts. To identify the reaction intermediates, oxidation of n-butane, 1,3-butadiene and related oxygenates on the VPO catalyst were monitored using FTIR spectroscopy under transient conditions. n-Butane was found to adsorb on the VPO catalyst to form olefinic species, which were further oxidized to unsaturated, noncyclic carbonyl species. The open chain dicarbonyl species then experienced cycloaddition to form maleic anhydride. VPO catalyst phase transformations were investigated using in situ laser Raman spectroscopy. This report contains Chapter 1: General introduction; Chapter 2: Literature review; and Chapter 5: Conclusion and recommendations.
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
Book Description
N-Butane selective oxidation over the VPO catalyst to maleic anhydride is the first and only commercialized process of light alkane selective oxidation. The mechanism of this reaction is still not well known despite over twenty years of extensive studies, which can partially be attributed to the extreme difficulties to characterize catalytic reactions real-time under typical reaction conditions. In situ spectroscopic characterization techniques such as Infrared spectroscopy and laser Raman spectroscopy were used in the current mechanistic investigations of n-butane oxidation over VPO catalysts. To identify the reaction intermediates, oxidation of n-butane, 1,3-butadiene and related oxygenates on the VPO catalyst were monitored using FTIR spectroscopy under transient conditions. n-Butane was found to adsorb on the VPO catalyst to form olefinic species, which were further oxidized to unsaturated, noncyclic carbonyl species. The open chain dicarbonyl species then experienced cycloaddition to form maleic anhydride. VPO catalyst phase transformations were investigated using in situ laser Raman spectroscopy. This report contains Chapter 1: General introduction; Chapter 2: Literature review; and Chapter 5: Conclusion and recommendations.
Simple Molybdate Selective Oxidation Catalysts Containing Excess MoO3 for C4 Hydrocarbon Oxidation to Maleic Anhydride
Author: Umit Sivrioglu Ozkan
Publisher:
ISBN:
Category :
Languages : en
Pages : 378
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 378
Book Description
In Situ Vibrational Spectroscopic Investigation of C4 Hydrocarbon Selective Oxidation Over Vanadium-phosphorus-oxide Catalysts
Author: Zhi-Yang Xue
Publisher:
ISBN:
Category :
Languages : en
Pages : 248
Book Description
The open chain dicarbonyl species then experienced cycloaddition to form maleic anhydride. VPO catalyst phase transformations were investigated using in situ laser Raman spectroscopy. During reduction-oxidation step changes, (VO)2P20-- was readily converted to [Alpha subscript Pi]-, [Delta]-VOP04 and ultimately to [Beta]-VOP04 in O2/N2; these V5 phases were eliminated in n- butane/N2. A "wet" nitrogen feed (5-10% H20 in N2) transformed (VO)2P20-- and [Alpha subscript Iota]-, [Alpha subscript Pi]-, [Beta]-, [Delta]-, [Gamma]-VOP04 to V2O5 at temperatures above 400°C. The presence of water vapor facilitated the loss of oxygen atoms involved in V-O-P bonding; separated vanadium oxide and phosphorus oxide species were formed. The isolated vanadium oxides than transformed to V2O5, and phosphorus species likely diffused from the catalyst lattice in the form of acid phosphates.
Publisher:
ISBN:
Category :
Languages : en
Pages : 248
Book Description
The open chain dicarbonyl species then experienced cycloaddition to form maleic anhydride. VPO catalyst phase transformations were investigated using in situ laser Raman spectroscopy. During reduction-oxidation step changes, (VO)2P20-- was readily converted to [Alpha subscript Pi]-, [Delta]-VOP04 and ultimately to [Beta]-VOP04 in O2/N2; these V5 phases were eliminated in n- butane/N2. A "wet" nitrogen feed (5-10% H20 in N2) transformed (VO)2P20-- and [Alpha subscript Iota]-, [Alpha subscript Pi]-, [Beta]-, [Delta]-, [Gamma]-VOP04 to V2O5 at temperatures above 400°C. The presence of water vapor facilitated the loss of oxygen atoms involved in V-O-P bonding; separated vanadium oxide and phosphorus oxide species were formed. The isolated vanadium oxides than transformed to V2O5, and phosphorus species likely diffused from the catalyst lattice in the form of acid phosphates.
Selective Catalytic Oxidation of C-4 Hydrocarbons to Maleic Anhydride
Metal Oxides in Heterogeneous Catalysis
Author: Jacques C. Vedrine
Publisher: Elsevier
ISBN: 0128116323
Category : Technology & Engineering
Languages : en
Pages : 620
Book Description
Metal Oxides in Heterogeneous Catalysis is an overview of the past, present and future of heterogeneous catalysis using metal oxides catalysts. The book presents the historical, theoretical, and practical aspects of metal oxide-based heterogeneous catalysis. Metal Oxides in Heterogeneous Catalysis deals with fundamental information on heterogeneous catalysis, including reaction mechanisms and kinetics approaches.There is also a focus on the classification of metal oxides used as catalysts, preparation methods and touches on zeolites, mesoporous materials and Metal-organic frameworks (MOFs) in catalysis. It will touch on acid or base-type reactions, selective (partial) and total oxidation reactions, and enzymatic type reactions The book also touches heavily on the biomass applications of metal oxide catalysts and environmentally related/depollution reactions such as COVs elimination, DeNOx, and DeSOx. Finally, the book also deals with future trends and prospects in metal oxide-based heterogeneous catalysis. Presents case studies in each chapter that provide a focus on the industrial applications Includes fundamentals, key theories and practical applications of metal oxide-based heterogeneous catalysis in one comprehensive resource Edited, and contributed, by leading experts who provide perspectives on synthesis, characterization and applications
Publisher: Elsevier
ISBN: 0128116323
Category : Technology & Engineering
Languages : en
Pages : 620
Book Description
Metal Oxides in Heterogeneous Catalysis is an overview of the past, present and future of heterogeneous catalysis using metal oxides catalysts. The book presents the historical, theoretical, and practical aspects of metal oxide-based heterogeneous catalysis. Metal Oxides in Heterogeneous Catalysis deals with fundamental information on heterogeneous catalysis, including reaction mechanisms and kinetics approaches.There is also a focus on the classification of metal oxides used as catalysts, preparation methods and touches on zeolites, mesoporous materials and Metal-organic frameworks (MOFs) in catalysis. It will touch on acid or base-type reactions, selective (partial) and total oxidation reactions, and enzymatic type reactions The book also touches heavily on the biomass applications of metal oxide catalysts and environmentally related/depollution reactions such as COVs elimination, DeNOx, and DeSOx. Finally, the book also deals with future trends and prospects in metal oxide-based heterogeneous catalysis. Presents case studies in each chapter that provide a focus on the industrial applications Includes fundamentals, key theories and practical applications of metal oxide-based heterogeneous catalysis in one comprehensive resource Edited, and contributed, by leading experts who provide perspectives on synthesis, characterization and applications
The Selective Oxidation of N-butane to Maleic Anhydride Over Model Vanadium-phosphorus Oxide Catalysts
Author: Thomas Patrick Moser
Publisher:
ISBN:
Category :
Languages : en
Pages : 260
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 260
Book Description
In-situ Characterization of Heterogeneous Catalysts
Author: José A. Rodriguez
Publisher: John Wiley & Sons
ISBN: 1118000161
Category : Science
Languages : en
Pages : 500
Book Description
HELPS RESEARCHERS DEVELOP NEW CATALYSTS FOR SUSTAINABLE FUEL AND CHEMICAL PRODUCTION Reviewing the latest developments in the field, this book explores the in-situ characterization of heterogeneous catalysts, enabling readers to take full advantage of the sophisticated techniques used to study heterogeneous catalysts and reaction mechanisms. In using these techniques, readers can learn to improve the selectivity and the performance of catalysts and how to prepare catalysts as efficiently as possible, with minimum waste. In-situ Characterization of Heterogeneous Catalysts features contributions from leading experts in the field of catalysis. It begins with an introduction to the fundamentals and then covers: Characterization of electronic and structural properties of catalysts using X-ray absorption fine structure spectroscopy Techniques for structural characterization based on X-ray diffraction, neutron scattering, and pair distribution function analysis Microscopy and morphological studies Techniques for studying the interaction of adsorbates with catalyst surfaces, including infrared spectroscopy, Raman spectroscopy, EPR, and moderate pressure XPS Integration of techniques that provide information on the structural properties of catalysts with techniques that facilitate the study of surface reactions Throughout the book, detailed examples illustrate how techniques for studying catalysts and reaction mechanisms can be applied to solve a broad range of problems in heterogeneous catalysis. Detailed figures help readers better understand how and why the techniques discussed in the book work. At the end of each chapter, an extensive set of references leads to the primary literature in the field. By explaining step by step modern techniques for the in-situ characterization of heterogeneous catalysts, this book enables chemical scientists and engineers to better understand catalyst behavior and design new catalysts for green, sustainable fuel and chemical production.
Publisher: John Wiley & Sons
ISBN: 1118000161
Category : Science
Languages : en
Pages : 500
Book Description
HELPS RESEARCHERS DEVELOP NEW CATALYSTS FOR SUSTAINABLE FUEL AND CHEMICAL PRODUCTION Reviewing the latest developments in the field, this book explores the in-situ characterization of heterogeneous catalysts, enabling readers to take full advantage of the sophisticated techniques used to study heterogeneous catalysts and reaction mechanisms. In using these techniques, readers can learn to improve the selectivity and the performance of catalysts and how to prepare catalysts as efficiently as possible, with minimum waste. In-situ Characterization of Heterogeneous Catalysts features contributions from leading experts in the field of catalysis. It begins with an introduction to the fundamentals and then covers: Characterization of electronic and structural properties of catalysts using X-ray absorption fine structure spectroscopy Techniques for structural characterization based on X-ray diffraction, neutron scattering, and pair distribution function analysis Microscopy and morphological studies Techniques for studying the interaction of adsorbates with catalyst surfaces, including infrared spectroscopy, Raman spectroscopy, EPR, and moderate pressure XPS Integration of techniques that provide information on the structural properties of catalysts with techniques that facilitate the study of surface reactions Throughout the book, detailed examples illustrate how techniques for studying catalysts and reaction mechanisms can be applied to solve a broad range of problems in heterogeneous catalysis. Detailed figures help readers better understand how and why the techniques discussed in the book work. At the end of each chapter, an extensive set of references leads to the primary literature in the field. By explaining step by step modern techniques for the in-situ characterization of heterogeneous catalysts, this book enables chemical scientists and engineers to better understand catalyst behavior and design new catalysts for green, sustainable fuel and chemical production.