CONVERSION OF METHANE AND CARBON-DIOXIDE INTO SYNTHESIS GAS OVER ALUMINA-SUPPORTED NICKEL-CATALYSTS - EFFECT OF NI-AL2O3 INTERACTIONS

Authors
Citation
Yg. Chen et J. Ren, CONVERSION OF METHANE AND CARBON-DIOXIDE INTO SYNTHESIS GAS OVER ALUMINA-SUPPORTED NICKEL-CATALYSTS - EFFECT OF NI-AL2O3 INTERACTIONS, Catalysis letters, 29(1-2), 1994, pp. 39-48
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry Physical
Journal title
ISSN journal
1011-372X
Volume
29
Issue
1-2
Year of publication
1994
Pages
39 - 48
Database
ISI
SICI code
1011-372X(1994)29:1-2<39:COMACI>2.0.ZU;2-1
Abstract
A series of alumina-supported nickel catalysts were prepared by calcin ation of the catalyst precursors in air at different temperatures. The increase in the intensity of Ni-Al2O3 interactions with the calcinati on temperature was found to be unfavourable to the reduction of the ca talyst, and thus caused a decrease in activity for the low temperature reaction between methane and carbon dioxide. However, the catalyst wi th strong Ni-Al2O3 interactions suppressed carbon deposition effective ly, which can be attributed to the formation of spinel, NiAl2O4, after calcination. When the reaction was carried out at 1023 K, all the cat alysts tended to exhibit the same activity. At the same time, only fil amentous carbon with a hollow inner channel was observed and there wer e nickel particles on the tip of this filamentous carbon.