Author: Ravindra Sant
Publisher:
ISBN:
Category :
Languages : en
Pages : 462
Book Description
Elementary-step Modeling and Transient FTIR Studies of Carbon Monoxide and Ethylene Oxidation on Silica-supported Platinum and Rhodium Catalysts
Author: Ravindra Sant
Publisher:
ISBN:
Category :
Languages : en
Pages : 462
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 462
Book Description
Elementary-step Modeling and Transient FTIR Studies of Carbon Monoxide and Ethylene Oxidation on Silicia-supported Platinum and Rhodium Catalysts
Author: Ravindra Sant
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Transient FTIR Studies and Elementary Step Modeling of Carbon Monoxide and Ethylene Oxidation on Silica Supported Pt and Pd Catalysts
Author: David John Kaul
Publisher:
ISBN:
Category :
Languages : en
Pages : 586
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 586
Book Description
Comprehensive Dissertation Index
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1116
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1116
Book Description
American Doctoral Dissertations
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 728
Book Description
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 728
Book Description
In-situ FTIR Studies on Oxidation of Carbon Monoxide Over Silica Supported Palladium Catalysts
Author: Ekua Okoso-Amaa
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 80
Book Description
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 80
Book Description
Characterization and Reaction Studies of Silica Supported Platinum and Rhodium Model Catalysts
Author: Matthew James Lundwall
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The physical and catalytic properties of silica supported platinum or rhodium model catalysts are studied under both ultra high vacuum (UHV) and elevated pressure reaction conditions (>1torr). Platinum or rhodium nanoparticles are vapor deposited onto a SiO2/Mo(112) surface and characterized using various surface analytical methods. CO chemisorption is utilized as a surface probe to estimate the concentration of various sites on the nanoparticles through thermal desorption spectroscopy (TDS) and infrared reflection absorption spectroscopy (IRAS) along with microscopy techniques to estimate particle size. The results are compared with hard sphere models of face centered cubic metals described as truncated cubo-octahedron. Results demonstrate the excellent agreement between chemisorption and hard sphere models in estimating the concentration of undercoordinated atoms on the nanoparticle surface. Surfaces are then subjected to high pressure reaction conditions to test the efficacy of utilizing the rate of a chemical reaction to obtain structural information about the surface. The surfaces are translated in-situ to a high pressure reaction cell where both structure insensitive and sensitive reactions are performed. Structure insensitive reactions (e.g. CO oxidation) allow a method to calculate the total active area on a per atom basis for silica supported platinum and rhodium model catalysts under reaction conditions. While structure sensitive reactions allow an estimate of the types of reaction sites, such as step sites ([less than or equal to]C7) under reaction conditions (e.g. n-heptane dehydrocyclization). High pressure structure sensitive reactions (e.g. ethylene hydroformylation) are also shown to drastically alter the morphology of the surface by dispersing nanoparticles leading to inhibition of catalytic pathways. Moreover, the relationships between high index single crystals, oxide supported nanoparticles, and high surface area technical catalysts are established. Overall, the results demonstrate the utility of model catalysts in understanding the structure-activity relationships in heterogeneous catalytic reactions and the usefulness of high pressure reactions as an analytical probe of surface morphology.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The physical and catalytic properties of silica supported platinum or rhodium model catalysts are studied under both ultra high vacuum (UHV) and elevated pressure reaction conditions (>1torr). Platinum or rhodium nanoparticles are vapor deposited onto a SiO2/Mo(112) surface and characterized using various surface analytical methods. CO chemisorption is utilized as a surface probe to estimate the concentration of various sites on the nanoparticles through thermal desorption spectroscopy (TDS) and infrared reflection absorption spectroscopy (IRAS) along with microscopy techniques to estimate particle size. The results are compared with hard sphere models of face centered cubic metals described as truncated cubo-octahedron. Results demonstrate the excellent agreement between chemisorption and hard sphere models in estimating the concentration of undercoordinated atoms on the nanoparticle surface. Surfaces are then subjected to high pressure reaction conditions to test the efficacy of utilizing the rate of a chemical reaction to obtain structural information about the surface. The surfaces are translated in-situ to a high pressure reaction cell where both structure insensitive and sensitive reactions are performed. Structure insensitive reactions (e.g. CO oxidation) allow a method to calculate the total active area on a per atom basis for silica supported platinum and rhodium model catalysts under reaction conditions. While structure sensitive reactions allow an estimate of the types of reaction sites, such as step sites ([less than or equal to]C7) under reaction conditions (e.g. n-heptane dehydrocyclization). High pressure structure sensitive reactions (e.g. ethylene hydroformylation) are also shown to drastically alter the morphology of the surface by dispersing nanoparticles leading to inhibition of catalytic pathways. Moreover, the relationships between high index single crystals, oxide supported nanoparticles, and high surface area technical catalysts are established. Overall, the results demonstrate the utility of model catalysts in understanding the structure-activity relationships in heterogeneous catalytic reactions and the usefulness of high pressure reactions as an analytical probe of surface morphology.
Chemical Abstracts
Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 2616
Book Description
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 2616
Book Description
Simultaneous Kinetic and Infrared Studies of Carbon Monoxide Oxidation on Supported Platinum Catalyst
Author: Kwang-Ho Park
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 522
Book Description
Publisher:
ISBN:
Category : Carbon monoxide
Languages : en
Pages : 522
Book Description
Metals Abstracts Index
Author:
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 894
Book Description
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 894
Book Description