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CO 2 Reforming of Methane over Ni/MgO Catalysts Promoted with Zr and La Oxides
Author(s) -
AlDoghachi Faris A. J.,
TaufiqYap Yun Hin
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701883
Subject(s) - catalysis , x ray photoelectron spectroscopy , carbon dioxide reforming , methane , materials science , precipitation , oxide , metal , nuclear chemistry , mixed oxide , inorganic chemistry , syngas , chemistry , chemical engineering , metallurgy , organic chemistry , engineering , physics , meteorology
Abstract An investigation on carbon dioxide reforming of methane (DRM) to synthesis gas (H 2 and CO) was carried out with several synthesized Ni‐based catalysts. Mixed oxide supports (MgO‐ZrO 2 and MgO‐La 2 O 3 ), were prepared using co‐precipitation method with K 2 CO 3 as the precipitant. The findings indicated a high level of catalytic activity and stability of synthesized Ni‐based catalysts for DRM. Different techniques, namely, XRD, XPS, H 2 ‐TPR, BET, TEM, FESEM, and TGA, were employed to perform the characterization of synthesized catalysts. It was found that with the addition of promoter Zr, the catalyst Ni/Mg 0.85 Zr 0.15 O showed a high level of activity (CH 4 ; 86%, and CO 2 ; 98%) and better stability. The significant anti‐coking activity of the reduced catalyst with low Ni metal was evaluated. Furthermore, this research study also examined the performance of the catalyst activity and stability. The results obtained from the temperature program reduction (H 2 ‐TPR) revealed that the presence of ZrO 2 with MgO support can enhance Ni reducibility in comparison to La 2 O 3 , which is an important indicator of high activity and stability of the Ni catalysts for DRM. It was also found that the presence of La 2 O 3 did not show any effects on the stability of the catalyst.