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Nickel catalysts supported on MgO/smectite-type nanocomposites for methane reforming

Alexander Moronta, Nobuhiro Iwasa, Shin-Ichiro Fujita, Masahide Shimokawabe and Masahiko Arai
Nickel catalysts supported on MgO/smectite-type nanocomposites for methane reforming
Clays and Clay Minerals (December 2005) 53 (6): 622-630

Abstract

MgO-clay nanocomposites were prepared from a synthetic smectite-type clay, TS, using three different non-ionic surfactants (Igepal CA-720, Brij 30 and Brij 56) and the resulting clay nanocomposites were impregnated with Ni for the methane reforming reaction with carbon dioxide to synthesis gas. A Ni/TS catalyst was also prepared for comparison. The prepared supports and catalysts were characterized by X-ray diffraction, X-ray fluorescence, thermogravimetric analysis and N (sub 2) adsorption/desorption isotherms. The thermal stability, pore structure and the surface area strongly influence the catalytic behavior of the catalysts. The methane conversions (at 700 degrees C for 4 h) were 91, 95 and 97% for Ni/TSIGE, Ni/TSBR30 and Ni/TSBR56, respectively, indicating that the surface properties and the catalytic performance of the resulting solids slightly improved as the polyethylene oxide number of the surfactant increased. A reduced conversion (10%) and a rapid deactivation was observed in the Ni/TS catalyst, attributed to its Na content and low thermal stability, which led to sintering and coke deposition.


ISSN: 0009-8604
EISSN: 1552-8367
Serial Title: Clays and Clay Minerals
Serial Volume: 53
Serial Issue: 6
Title: Nickel catalysts supported on MgO/smectite-type nanocomposites for methane reforming
Affiliation: Hokkaido University, Division of Materials Science and Engineering, Sapporo, Japan
Pages: 622-630
Published: 200512
Text Language: English
Publisher: Clay Minerals Society, Clarkson, NY, United States
References: 21
Accession Number: 2006-011141
Categories: Geochemistry of rocks, soils, and sedimentsSedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 6 tables
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Clay Minerals Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200606
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