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Ni/Al2O3 catalysts for CO methanation: Effect of Al2O3 supports calcined at different temperatures
Gao, Jiajian1,2; Jia, Chunmiao1; Li, Jing1; Zhang, Meiju1; Gu, Fangna1; Xu, Guangwen1; Zhong, Ziyi3; Su, Fabing1
2013-11-01
Source PublicationJOURNAL OF ENERGY CHEMISTRY
Volume22Issue:6Pages:919-927
AbstractThe correlation between phase structures and surface acidity of Al2O3 supports calcined at different temperatures and the catalytic performance of Ni/Al2O3 catalysts in the production of synthetic natural gas (SNG) via CO methanation was systematically investigated. A series of 10 wt% NiO/Al2O3 catalysts were prepared by the conventional impregnation method, and the phase structures and surface acidity of Al2O3 supports were adjusted by calcining the commercial gamma-Al2O3 at different temperatures (600-1200 degrees C). CO methanation reaction was carried out in the temperature range of 300-600 degrees C at different weight hourly space velocities (WHSV = 30000 and 120000 mL.g(-1).h(-1)) and pressures (0.1 and 3.0 MPa). It was found that high calcination temperature not only led to the growth in Ni particle size, but also weakened the interaction between Ni nanoparticles and Al2O3 supports due to the rapid decrease of the specific surface area and acidity of Al2O3 supports. Interestingly, Ni catalysts supported on Al2O3 calcined at 1200 degrees C (Ni/Al2O3-1200) exhibited the best catalytic activity for CO methanation under different reaction conditions. Lifetime reaction tests also indicated that Ni/Al2O3-1200 was the most active and stable catalyst compared with the other three catalysts, whose supports were calcined at lower temperatures (600, 800 and 1000 degrees C). These findings would therefore be helpful to develop Ni/Al2O3 methanation catalyst for SNG production.
KeywordNi Catalyst Alumina Co Methanation Synthetic Natural Gas Carbon Deposition
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
Language英语
WOS KeywordSYNTHETIC NATURAL-GAS ; NICKEL-CATALYSTS ; CARBON-MONOXIDE ; SYNGAS METHANATION ; STRUCTURE SENSITIVITY ; ALUMINA ; HYDROGEN ; DIOXIDE ; HYDROCARBONS ; POLYMORPHS
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000328434900015
Citation statistics
Cited Times:62[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13517
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.ASTAR, Inst Chem Engn & Sci, Singapore 627833, Singapore
Recommended Citation
GB/T 7714
Gao, Jiajian,Jia, Chunmiao,Li, Jing,et al. Ni/Al2O3 catalysts for CO methanation: Effect of Al2O3 supports calcined at different temperatures[J]. JOURNAL OF ENERGY CHEMISTRY,2013,22(6):919-927.
APA Gao, Jiajian.,Jia, Chunmiao.,Li, Jing.,Zhang, Meiju.,Gu, Fangna.,...&Su, Fabing.(2013).Ni/Al2O3 catalysts for CO methanation: Effect of Al2O3 supports calcined at different temperatures.JOURNAL OF ENERGY CHEMISTRY,22(6),919-927.
MLA Gao, Jiajian,et al."Ni/Al2O3 catalysts for CO methanation: Effect of Al2O3 supports calcined at different temperatures".JOURNAL OF ENERGY CHEMISTRY 22.6(2013):919-927.
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