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Synthesis of mesoporous Ni-La-Si mixed oxides for CO2 reforming of CH4 with a high H-2 selectivity
Chen, Chenju1; Wang, Xueguang1; Huang, Haigen1; Zou, Xiujing1; Gu, Fangna2; Su, Fabing2; Lu, Xionggang1
2019-03-01
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume185Pages:56-67
AbstractNi-La-Si mixed oxides with different La loadings were first synthesized through one-step polyethylene glycol-assisted hydrolysis of tetraethoxysilane and inorganic salts in a water-ethylene glycol solution of nitric acid. The Ni-La-Si materials exhibited mesoporous structures with narrow pore size distributions and large specific surface areas. Effects of La loadings on material structure, surface properties, interaction between Ni species and supports, and dispersion of Ni species were discussed in detail. Homogeneously-dispersed NiO species were reduced in situ with H-2 to form ultrafine metallic Ni nanocrystallites of 5-7 nm throughout the mesoporous silica. The obtained Ni/La-Si catalysts were applied for CO2 reforming of CH4 and exhibited high catalytic activity and excellent anti-coking ability. Addition of La in the Ni-La-Si catalysts not only enhance dispersion of Ni crystallites, reforming rate of Ni sites and catalytic stability, and more importantly, but also strongly inhibited reverse water gas shift reaction, resulting in almost 100% selectivity to H-2 or a syngas with H-2/CO molar ratio at the La loading of 3.0 wt%.
KeywordMesoporous silica Nickel catalyst Dry reforming Methane Carbon dioxide
DOI10.1016/j.fuproc.2018.11.017
Language英语
WOS KeywordCARBON-DIOXIDE ; BIMETALLIC CATALYSTS ; HIGH-PERFORMANCE ; SYNTHESIS GAS ; METHANE ; NICKEL ; SILICA ; COKE ; DEPOSITION ; LANIO3
Funding Project973 Program[2014CB744306] ; National Natural Science Foundation of China[U1860203] ; National Natural Science Foundation of China[51574164] ; CAS Interdisciplinary Innovation Team
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
Funding Organization973 Program ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team
WOS IDWOS:000456903900007
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27940
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Xueguang; Gu, Fangna; Lu, Xionggang
Affiliation1.Shanghai Univ, Sch Mat Sci & Engn, State Key Lab Adv Special Steel, Shanghai 200072, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen, Chenju,Wang, Xueguang,Huang, Haigen,et al. Synthesis of mesoporous Ni-La-Si mixed oxides for CO2 reforming of CH4 with a high H-2 selectivity[J]. FUEL PROCESSING TECHNOLOGY,2019,185:56-67.
APA Chen, Chenju.,Wang, Xueguang.,Huang, Haigen.,Zou, Xiujing.,Gu, Fangna.,...&Lu, Xionggang.(2019).Synthesis of mesoporous Ni-La-Si mixed oxides for CO2 reforming of CH4 with a high H-2 selectivity.FUEL PROCESSING TECHNOLOGY,185,56-67.
MLA Chen, Chenju,et al."Synthesis of mesoporous Ni-La-Si mixed oxides for CO2 reforming of CH4 with a high H-2 selectivity".FUEL PROCESSING TECHNOLOGY 185(2019):56-67.
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