Palladium as a Catalyst for Selective Hydrogenation PDF Download
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Author: Takht Ravanchi Maryam
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659779206
Category :
Languages : en
Pages : 188
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Book Description
The selective hydrogenation of multi-unsaturated hydrocarbons, especially in pyrolysis products, to corresponding mono-olefins is a widely exploited way for large-scale production of polymer-grade olefins and also upgrading of gasoline blending stocks. Thermodynamic and/or kinetic parameters could be responsible for directing the reaction network to a special product. This book deals with application of palladium-based catalysts in selective hydrogenation of alkynes and diens. It covers both fundamental and applied aspects of selective hydrogenation with special emphasis on the selectivity problem. The book is organized in rational way beginning with the electronic structure of palladium, followed by its catalytic properties, interaction with supports and transport limitations and commercial applications.
Author: Paul Nels Rylander
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 578
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Book Description
Author: Takht Ravanchi Maryam
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659779206
Category :
Languages : en
Pages : 188
Get Book Here
Book Description
The selective hydrogenation of multi-unsaturated hydrocarbons, especially in pyrolysis products, to corresponding mono-olefins is a widely exploited way for large-scale production of polymer-grade olefins and also upgrading of gasoline blending stocks. Thermodynamic and/or kinetic parameters could be responsible for directing the reaction network to a special product. This book deals with application of palladium-based catalysts in selective hydrogenation of alkynes and diens. It covers both fundamental and applied aspects of selective hydrogenation with special emphasis on the selectivity problem. The book is organized in rational way beginning with the electronic structure of palladium, followed by its catalytic properties, interaction with supports and transport limitations and commercial applications.
Author: Ruijun Hou
Publisher: Springer
ISBN: 981100773X
Category : Science
Languages : en
Pages : 151
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Book Description
This thesis offers novel methods for catalyst and process design for the selective hydrogenation of acetylene and 1,3-butadiene. The author predicts the properties of supported Pd–Ni bimetallic catalysts using density functional theory (DFT) calculations and temperature-programmed desorption (TPD). The excellent correlation between model surfaces and supported catalysts demonstrates the feasibility of designing effective bimetallic catalysts for selective hydrogenation reactions. The author also proposes a method for designing non-precious metal catalysts to replace precious metals. She modifies the process of selective hydrogenation of acetylene by coupling the selective adsorption to the selective hydrogenation in the liquid phase, as a result of which the ethylene selectivity is greatly improved and heat transfer is greatly enhanced. Lastly, by analyzing the mechanism of liquid-phase hydrogenation, the author proposes a multi-stage slurry bed reactor for industrial applications.“/p>
Author: Douglas M. Dolan
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Book Description
Author: Somnath Bhattacharjee
Publisher:
ISBN:
Category : Hydrogenation
Languages : en
Pages : 342
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Book Description
Author: Tengteng Lyu
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 128
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Book Description
Author:
Publisher:
ISBN:
Category : Palladium
Languages : en
Pages : 150
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Book Description
A series of palladium catalysts with ca. 1 wt% palladium supported on mesoporous silica with different pore sizes (MCM-41, SBA-15, and MCF) were prepared by deposition of colloidal Pd nanoparticles (Pd/X_col) and Pd(II)acetate solution (Pd/X_imp). MCM-41 and SBA-15 showed the XRD characteristic peaks indicating highly ordered hexagonal pore structure while MCF consisted of spherical cell and frame structure with average pore size of 2.7, 3.9, and 7.8 nm, respectively. Sizes of the colloidal Pd nanoparticles were about 2.3 nm. The supports pore structure did not affect the Pd particle size of Pd/X_col catalysts. For the Pd/X_imp, the Pd particle size was increased with increasing pore diameter of the supports. However, the largest Pd particle size was obtained on Pd/SBA-15_imp since the Pd particles were formed in a long cylindrical shape similar to SBA-15. The Pd/SBA-15_col exhibited the best catalyst performance in the liquid-phase selective hydrogenation of phenylacetylene under mild conditions (40 degress celsius, H2 pressure = 1-5 bar, 30 min). The appropriated pore structure and pore size of SBA-15 could provide a better encapsulation of Pd particles so that high styrene selectivity was attained at complete conversion of phenylacetylene. All the Pd/X_col catalysts exhibited no change in the catalyst activities/selectivity during the recyclability test for four cycles while the Pd/X_imp showed an increase of catalyst activity and lower styrene selectivity in some cases.
Author: L. Cervený
Publisher: Elsevier
ISBN: 0080960618
Category : Technology & Engineering
Languages : en
Pages : 705
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Book Description
The collection of contributions in this volume presents the most up-to-date findings in catalytic hydrogenation. The individual chapters have been written by 36 top specialists each of whom has achieved a remarkable depth of coverage when dealing with his particular topic. In addition to detailed treatment of the most recent problems connected with catalytic hydrogenations, the book also contains a number of previously unpublished results obtained either by the authors themselves or within the organizations to which they are affiliated.Because of its topical and original character, the book provides a wealth of information which will be invaluable not only to researchers and technicians dealing with hydrogenation, but also to all those concerned with homogeneous and heterogeneous catalysis, organic technology, petrochemistry and chemical engineering.
Author: Junyi He
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 114
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Book Description
Author: Fiona-Mairéad McKenna
Publisher:
ISBN:
Category :
Languages : en
Pages : 122
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Book Description
