fulltext.study @t Gmail

Impregnated layer combustion synthesis method for preparation of multicomponent catalysts for the production of hydrogen from oxidative reforming of methanol

Paper ID Volume ID Publish Year Pages File Format Full-Text
42291 45919 2010 9 PDF Available
Title
Impregnated layer combustion synthesis method for preparation of multicomponent catalysts for the production of hydrogen from oxidative reforming of methanol
Abstract

Multi-component catalysts containing copper, zinc, zirconium, and palladium were prepared by a combustion synthesis method referred as impregnated layer combustion synthesis (ILCS). These catalysts were active and selective for the production of hydrogen by the oxidative reforming of methanol. ILCS involves impregnation of a reactive solution containing nitrated of the catalytic components and glycine which is impregnated into a cellulose substrate. The exothermic combustion of the mixture to form oxides led to the formation of a self-propagating combustion and its temperature––time evolution was followed by infrared thermography. The activity and selectivity of these catalysts for hydrogen production was measured and correlated with their composition and synthesis mode used. It is shown that synthesis procedures and the presence of a ZrO2 support have a significant effect on Pd dispersion and on the resulting catalytic activity and selectivity. Catalyst with 3%Pd loaded in a second wave impregnation (SWI) method showed exceptional high activity for methanol conversion at low temperatures, whereas the ZrO2 supported catalyst displayed superior selectivity toward hydrogen production over the whole range of the temperatures investigated.

Graphical abstractImpregnated layer combustion synthesis is used to prepare catalysts for oxidative reforming of methanol. Cellulosic paper impregnated with a solution of metal nitrate and glycine gives two combustion zones upon ignition. The first front gives an amorphous metal oxide layer which gets converted into a crystalline nano-size (∼10 nm) product after passing through the second front and thus avoiding any external calcination. These catalysts are highly active and selective at low-temperature range for the oxidative reforming of methanol.Figure optionsDownload full-size imageDownload high-quality image (142 K)Download as PowerPoint slide

Keywords
Methanol oxidative reforming; Combustion synthesis; Cu/Zn/Zr-Pd catalysts
First Page Preview
Impregnated layer combustion synthesis method for preparation of multicomponent catalysts for the production of hydrogen from oxidative reforming of methanol
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 372, Issue 2, 15 January 2010, Pages 175–183
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