fulltext.study @t Gmail

Low temperature catalytic steam reforming of ethanol. 2. Preliminary kinetic investigation of Pt/CeO2 catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
47462 46472 2010 8 PDF Available
Title
Low temperature catalytic steam reforming of ethanol. 2. Preliminary kinetic investigation of Pt/CeO2 catalysts
Abstract

Catalytic activity, selectivity and stability of a Pt/CeO2 (5wt% Pt) catalyst were investigated in the low temperature ethanol steam reforming reaction for hydrogen production.Experimental results showed that the catalyst is very active and selective, with negligible CO production and complete ethanol conversion already at 300 °C. The main promoted reactions are ethanol decomposition, ethanol steam reforming and CO water gas shift, and a preliminary kinetic investigation showed that the apparent reaction orders are 0.5 and 0 for ethanol and steam respectively, with an apparent activation energy of 18 kJ mol−1 evaluated in the range 300–450 °C.Kinetic evaluations and temperature programmed desorption experiments suggest a surface reaction mechanism involving the following step: (i) ethanol dissociative adsorption on catalyst surface to form acetaldehyde intermediate, (ii) decarbonylation to produce mainly H2, CH4 and CO, and (iii) WGS reaction of CO adsorbed on Pt sites to produce H2 and CO2.

Keywords
Fuel cell; Hydrogen production; Low temperature ethanol steam reforming; Pt/CeO2 catalyst; Kinetics of ethanol reforming
First Page Preview
Low temperature catalytic steam reforming of ethanol. 2. Preliminary kinetic investigation of Pt/CeO2 catalysts
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 B: Environmental - Volume 96, Issues 1–2, 26 April 2010, Pages 190–197
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