Author: John Achu Moma
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 460
Book Description
Carbon Monoxide Oxidation Over Modified Titanium Dioxide Supported Gold Catalysts
Author: John Achu Moma
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 460
Book Description
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 460
Book Description
Modification of Titanium Dioxide Support for Carbon Monoxide Oxidation
Author:
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 212
Book Description
This research is to study the effect of surface modification of TiO2 support on the catalytic activity in CO oxidation. Two methods were employed for surface modification of TiO2 support: the creation of defective sites on TiO2 surface and the modification with trace element. The results found that the presence of higher amount of Ti3+ on the larger crystallite size TiO2 stabilizes small metal particles during impregnation, calcination, and reduction steps via stronger metal-support interaction; hence higher CO oxidation activities. In addition, the modification of TiO2 support with trace element can improve the CO oxidation activity. All of element dopants (i.e., Al, Si and P), the Si-modified TiO2 showed the highest catalytic performance of Ag/TiO2 catalyst. However, there existed an optimum content of Si/Ti molar ratio at ca. 0.05-0.1 which resulted in an improved catalytic activity of Ag/TiO2 in CO oxidation. There was no improvement in CO oxidation activity of the Ag/TiO2 catalyst when the Si/Ti was further increased to 0.3 due probably to the formation of amorphous SiO2 instead of the Ti-O-Si bond. The P-modified TiO2 supported Ag catalysts using phosphorus precursor in the form of oxide promoted the weak adsorbed oxygen species and resulted in catalytic activity improvement in CO oxidation.
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 212
Book Description
This research is to study the effect of surface modification of TiO2 support on the catalytic activity in CO oxidation. Two methods were employed for surface modification of TiO2 support: the creation of defective sites on TiO2 surface and the modification with trace element. The results found that the presence of higher amount of Ti3+ on the larger crystallite size TiO2 stabilizes small metal particles during impregnation, calcination, and reduction steps via stronger metal-support interaction; hence higher CO oxidation activities. In addition, the modification of TiO2 support with trace element can improve the CO oxidation activity. All of element dopants (i.e., Al, Si and P), the Si-modified TiO2 showed the highest catalytic performance of Ag/TiO2 catalyst. However, there existed an optimum content of Si/Ti molar ratio at ca. 0.05-0.1 which resulted in an improved catalytic activity of Ag/TiO2 in CO oxidation. There was no improvement in CO oxidation activity of the Ag/TiO2 catalyst when the Si/Ti was further increased to 0.3 due probably to the formation of amorphous SiO2 instead of the Ti-O-Si bond. The P-modified TiO2 supported Ag catalysts using phosphorus precursor in the form of oxide promoted the weak adsorbed oxygen species and resulted in catalytic activity improvement in CO oxidation.
Low Temperature Carbon Monoxide Oxidation Over Gold Supported on Iron Oxide Catalysts
Author: Chien Sze
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 310
Book Description
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 310
Book Description
Aspects of CO Oxidation Over Supported Gold Catalysts and Characteristics of the Active Site
Author: Colleen K. Costello
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Investigation of Au/TiO2, especially the effect of H 2O on this catalyst, revealed that Au/TiO2 exhibits behavior very similar to that of Au/gamma-Al2O3. This suggests that the requirements for CO oxidation activity are independent of the catalyst support.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Investigation of Au/TiO2, especially the effect of H 2O on this catalyst, revealed that Au/TiO2 exhibits behavior very similar to that of Au/gamma-Al2O3. This suggests that the requirements for CO oxidation activity are independent of the catalyst support.
CeO2-supported Gold Catalysts for CO Oxidation
Author: Veronica Illeana Aguilar-Guerrero
Publisher:
ISBN:
Category :
Languages : en
Pages : 448
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 448
Book Description
The Use of Isotopic Oxygen Exchange to Investigate Carbon Monoxide Oxidation Over Supported Gold Catalysts
Author: Michael J. Duggan
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Strong Metal-support Interactions
Author: R. T. K. Baker
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 258
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 258
Book Description
Atomically Precise Metal Nanoclusters
Author: Zhikun Wu
Publisher: Morgan & Claypool Publishers
ISBN: 1636390250
Category : Science
Languages : en
Pages : 141
Book Description
Atomically precise metal nanocluster research has emerged as a new frontier. This book serves as an introduction to metal nanoclusters protected by ligands. The authors have summarized the synthesis principles and methods, the characterization methods and new physicochemical properties, and some potential applications. By pursuing atomic precision, such nanocluster materials provide unprecedented opportunities for establishing precise relationships between the atomic-level structures and the properties. The book should be accessible to senior undergraduate and graduate students, researchers in various fields (e.g., chemistry, physics, materials, biomedicine, and engineering), R&D scientists, and science policy makers.
Publisher: Morgan & Claypool Publishers
ISBN: 1636390250
Category : Science
Languages : en
Pages : 141
Book Description
Atomically precise metal nanocluster research has emerged as a new frontier. This book serves as an introduction to metal nanoclusters protected by ligands. The authors have summarized the synthesis principles and methods, the characterization methods and new physicochemical properties, and some potential applications. By pursuing atomic precision, such nanocluster materials provide unprecedented opportunities for establishing precise relationships between the atomic-level structures and the properties. The book should be accessible to senior undergraduate and graduate students, researchers in various fields (e.g., chemistry, physics, materials, biomedicine, and engineering), R&D scientists, and science policy makers.
Surface Modified Nanomaterials for Applications in Catalysis
Author: Manoj B. Gawande
Publisher: Elsevier
ISBN: 0128236027
Category : Science
Languages : en
Pages : 392
Book Description
Surface Modified Nanomaterials for Applications in Catalysis: Fundamentals, Methods and Applications provides an overview of the different state-of-the-art surface modification methods of nanomaterials and their commercial applications. The main objective of this book is to comprehensively cover the modification of nanomaterial and their fabrication, including different techniques and discussions of present and emerging commercial applications. The book addresses fundamental chemistry concepts as applied to the modification of nanomaterials for applications in energy, catalysis, water remediation, sensors, and more. Characterization and fabrication methodologies are reviewed, along with the challenges of up-scaling of processes for commercial applications. This book is suitable for academics and practitioners working in materials science, engineering, nanotechnology, green chemistry and chemical engineering. Provides an overview of the basic principles of surface modification of nanomaterials Reviews useful fabrication and characterization methodologies for key applications Addresses surface modified nanomaterials for applications in catalysis, energy, sensor, environment, and more
Publisher: Elsevier
ISBN: 0128236027
Category : Science
Languages : en
Pages : 392
Book Description
Surface Modified Nanomaterials for Applications in Catalysis: Fundamentals, Methods and Applications provides an overview of the different state-of-the-art surface modification methods of nanomaterials and their commercial applications. The main objective of this book is to comprehensively cover the modification of nanomaterial and their fabrication, including different techniques and discussions of present and emerging commercial applications. The book addresses fundamental chemistry concepts as applied to the modification of nanomaterials for applications in energy, catalysis, water remediation, sensors, and more. Characterization and fabrication methodologies are reviewed, along with the challenges of up-scaling of processes for commercial applications. This book is suitable for academics and practitioners working in materials science, engineering, nanotechnology, green chemistry and chemical engineering. Provides an overview of the basic principles of surface modification of nanomaterials Reviews useful fabrication and characterization methodologies for key applications Addresses surface modified nanomaterials for applications in catalysis, energy, sensor, environment, and more
Methanation of Carbon Monoxide and Carbon Dioxide on Titanium Dioxide Supported Catalysts
Author: Mon Wei Lin
Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 102
Book Description
Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 102
Book Description