fulltext.study @t Gmail

TAP investigation of hydrogen and carbon monoxide adsorption on a silica-supported cobalt catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
42118 45911 2010 8 PDF Available
Title
TAP investigation of hydrogen and carbon monoxide adsorption on a silica-supported cobalt catalyst
Abstract

A temporal analysis of products (TAP) set-up was applied to investigate the initial elementary steps of the Fischer–Tropsch synthesis over silica-supported cobalt catalysts, i.e., hydrogen and carbon monoxide adsorption. Single-pulse TAP experiments were performed over both reduced and passivated catalysts in order to qualitatively and quantitatively assess the mechanism and kinetics of H2 and CO adsorption. Multi-pulse experiments were performed to change the state of the catalyst in a predefined way. Only fast and equilibrated physical hydrogen adsorption was observed over a passivated silica-supported cobalt catalyst. Over the reduced catalyst, the surface sites exhibited significant heterogeneity for adsorption. TAP responses were successfully described assuming two different reversible adsorption processes for hydrogen and both irreversible and reversible adsorption for carbon monoxide. Supporting qualitative information about reversibility of the adsorption was also obtained through alternating pulse experiments.

Graphical abstractA temporal analysis of products (TAP) set-up was applied to investigate the initial elementary steps of the Fischer–Tropsch synthesis over silica-supported cobalt catalysts, i.e., hydrogen and carbon monoxide adsorption. TAP responses were successfully described assuming the presence of sites of reversible adsorption for hydrogen and both irreversible and reversible adsorption for carbon monoxide. Supporting qualitative information about reversibility of the adsorption was also obtained through alternating pulse experiments.Figure optionsDownload full-size imageDownload high-quality image (149 K)Download as PowerPoint slide

Keywords
Fischer–Tropsch synthesis; Clean fuels; TAP; Elementary steps; Transient kinetics; Mechanism; Adsorption; Hydrogen; Carbon monoxide
First Page Preview
TAP investigation of hydrogen and carbon monoxide adsorption on a silica-supported cobalt catalyst
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 375, Issue 1, 26 February 2010, Pages 116–123
Authors
, , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us