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Highly stable Ni/SiC catalyst modified by Al2O3 for CO methanation reaction
Jin, Guojing1,2; Gu, Fangna2; Liu, Qing2; Wang, Xiaoyan2; Jia, Lihua1; Xu, Guangwen2; Zhong, Ziyi3; Su, Fabing2
2016
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume6Issue:12Pages:9631-9639
Abstract

It is still a great challenge to prevent sintering of supported Ni catalysts in highly exothermic reactions. To address this problem, in this work, highly thermal conductive and stable SiC is explored as a Ni catalyst support for CO methanation to produce synthetic natural gas; simultaneously, Al2O3 is utilized to modify the SiC surface to enhance the interaction between the metal and support and restrain the Ni active component from sintering or loss during the reaction. A series of Ni/Al2O3-SiC catalysts were successfully prepared by the co-deposition-precipitation method. The catalysts were investigated by N-2 adsorption, XRD, SEM/EDS, TEM, XPS, H-2-TPR, H-2-TPD and TG. The elemental mapping images indicated that the introduced Al2O3 particles were uniformly deposited on the surface of the SiC support, which evidently enhanced the interaction between Ni and the support by forming Ni-Al2O3 complexes as proved by H-2-TPR results. The Ni/Al2O3-SiC catalyst with an optimal amount of Al2O3 content showed a high catalytic activity and strong resistance to sintering, which can be attributed to two main factors: (1) the addition of Al2O3 can enhance the interactions between Ni and the support, thus inhibiting the migration of Ni particles on the support surface and improving the dispersion of them; (2) the superior heat conductivity of SiC can decrease the generation of hot spots in the catalyst bed.

KeywordSynthetic Natural-gas High-surface-area Nickel-catalysts Silicon-carbide Ni/al2o3 Catalysts Ni/tio2 Catalyst Temperature Syngas Carbon Performance
SubtypeArticle
Subject AreaChemistry, Multidisciplinary ; Chemistry
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c5ra19940a
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSynthetic Natural-gas ; High-surface-area ; Nickel-catalysts ; Silicon-carbide ; Ni/al2o3 Catalysts ; Ni/tio2 Catalyst ; Temperature ; Syngas ; Carbon ; Performance
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(21476238 ; National Basic Research Program(2014CB744306) ; Fund of State Key Laboratory of Multiphase Complex Systems(MPCS-2014-D-03 ; National High Technology Research and Development Program 863(SS2015AA050502)
WOS IDWOS:000369516100032
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20704
Collection研究所(批量导入)
Corresponding AuthorJia, Lihua
Affiliation1.Qiqihar Univ, Coll Chem & Chem Engn, Qiqihar 161006, Heilongjiang Pr, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.ASTAR, Inst Chem Engn & Sci, 1 Pesek Rd, Jurong Isl 627833, Singapore
Recommended Citation
GB/T 7714
Jin, Guojing,Gu, Fangna,Liu, Qing,et al. Highly stable Ni/SiC catalyst modified by Al2O3 for CO methanation reaction[J]. RSC ADVANCES,2016,6(12):9631-9639.
APA Jin, Guojing.,Gu, Fangna.,Liu, Qing.,Wang, Xiaoyan.,Jia, Lihua.,...&Su, Fabing.(2016).Highly stable Ni/SiC catalyst modified by Al2O3 for CO methanation reaction.RSC ADVANCES,6(12),9631-9639.
MLA Jin, Guojing,et al."Highly stable Ni/SiC catalyst modified by Al2O3 for CO methanation reaction".RSC ADVANCES 6.12(2016):9631-9639.
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