Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 45, Issue 32, Pages 16133-16143Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.04.066
Keywords
Anti-sintering; Bimetallic catalysts; Oleic acid (OA) assisted preparation; Hydrogen production; Dry reforming of methane
Categories
Funding
- National Natural Science Foundation of China [21872098]
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In this work, a series of mesoporous silica supported nickel or nickel-palladium catalysts were synthesized and performed in dry reforming of methane (DRM) reaction for producing syngas. Compared with the monometallic catalyst, the Ni-Pd bimetallic catalysts, especially synthesized by the OA-assisted route, exhibited promising yields of H-2 and CO in the catalytic DRM reaction, achieved at 63% and 69% over NiPd-SP-OA bimetallic catalyst at the reaction temperature of 700 degrees C, respectively. TEM image results confirmed that no obvious sintering phenomenon happened on spent NiPd-SP-OA bimetallic catalyst within 1550 min time-on-stream reaction. Based on the results of XRD, XPS and H-2-TPR, it could be known that the superior catalytic performance on NiPd-SP-OA catalyst were main ascribed to the smaller-sized Ni nanoparticles with a uniform metal dispersion and a larger fraction of exposed active sites (Ni-0). (C) 2020 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.
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