NDLI: Catalytic behaviour Ni/γ-Al2O3 microporous catalysts in the methane dry-reforming reaction

Content Provider	Springer Nature Link
Author	Dimitrijewits, Marta I. Guraya, María M. Arciprete, Carlos P. Luna, Adolfo C. Becerra, Alberto
Copyright Year	2001
Abstract	Two series of Ni/γ-Al2O3 catalysts with Ni content between 3.5 and 14 were prepared. In the first series, a γ-alumina support previously prepared was impregnated with Ni(NO3)2·6H2O (Merk) using an incipient wetness method and in the second, the Ni salt was incorporated into the precursor solution during the γ-alumina preparation. All the samples were characterised by XRD, DTA/TG, Nitrogen adsorption, CO-chemisorption, and tested by methane dry-reforming reaction experiments.In the series impregnated, the results could be related with the formation of two kinds of Ni sites: one derived from free-nickel oxide on the support surface and another produced from Ni-aluminate due to the oxide-support interaction. The ratio between both types of sites might change from the beginning of the catalytic reaction to the Stationary State (12 h of reaction).In the other series, which had the Ni included in the alumina matrix, an important increase of the specific activity of the sample with the highest Ni content at Stationary State, could indicate changes in the Ni sites during the reaction process.The conversion values evidenced, at both Initial and Stationary States, the effectiveness of increasing the Ni content in the two series.
Starting Page	101
Ending Page	104
Page Count	4
File Format	PDF
ISSN	14345021
Journal	Granular Matter
Volume Number	3
Issue Number	1-2
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-03-01
Publisher Place	Berlin Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials Materials Science

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