NDLI: Preparation and characterization of a plasma treated NiMgSBA-15 catalyst for methane reforming with CO<sub>2</sub> to produce syngas

Content Provider	Royal Society of Chemistry (RSC)
Author	Qian, Weizhong Wang, Ning Yu, Xiaopeng Shen, Kui Chu, Wei
Copyright Year	2013
Abstract	A plasma-assisted method was employed to prepare a NiMgSBA-15 catalyst. The catalytic properties of this catalyst were tested in methane reforming with carbon dioxide. The plasma-treated catalyst exhibited a higher initial catalytic activity and a better stability than those of the untreated counterpart catalyst. To elucidate the effect of the plasma treatment, the catalysts were characterized using XRD, N2 physisorption, XPS, TPR, CO2-TPD, TEM, TGA, Raman and temperature-programmed hydrogenation (TPH) techniques. The results obtained confirmed that the plasma treatment of the Ni precursor had a significant impact on the surface characteristics of the active sites. The plasma treatment reduced the sizes of the Ni clusters and enhanced Ni–support interaction, which enhanced the catalytic performance. The stronger basic sites derived from plasma treatment favored the chemisorption of CO2 and drove the coke elimination. The sintering of the metallic Ni particles did not take place during tests due to the confinement effect of the pore channels of mesoporous material. In addition, the plasma-treated catalyst showed excellent resistance to the deposition of filamentous carbon and encapsulating carbon. This was in contrast to the calcined sample, whose surface was covered by large amounts of graphitic carbon species, resulting in activity loss.
Starting Page	2278
Ending Page	2287
Page Count	10
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	3
Issue Number	9
Journal	Catalysis Science & Technology
DOI	10.1039/c3cy00299c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Methane Chemisorption Carbon dioxide Calcination Physisorption Hydrogenation Carbon X-ray crystallography Mesoporous material Transmission electron microscopy The Stronger Sintering TPR Raman
Content Type	Text
Resource Type	Article
Subject	Catalysis

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