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Characterization of aerogel Ni/Al2O3 catalysts and investigation on their stability for CH4-CO2 reforming in a fluidized bed
Hao, Zhigang1,2,3; Zhu, Qingshan1; Jiang, Zheng1; Hou, Baolin1,2; Li, Hongzhong1; Zhu, QS
2009
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume90Issue:1Pages:113-121
AbstractThe CH4-CO2 reforming was investigated in a fluidized bed reactor using nano-sized aerogel Ni/Al2O3 catalysts, which were prepared via a sol-gel method combined with a supercritical drying process. The catalysts were characterized with BET, XRD, H-2-TPR and H-2-TPD techniques. Compared with the impregnation catalyst, aerogel catalysts exhibited higher specific surface areas, lower bulk density, smaller Ni particle sizes, stronger metal-support interaction and higher Ni dispersion degrees. All tested aerogel catalysts showed better catalytic activities and stability than the impregnation catalyst. Their catalytic stability tested during 48 h reforming was dependent on their Ni loadings. Characterizations of spent catalysts indicated that only limited graphitic carbon formed on the aerogel catalyst, while massive graphitic carbon with filamentous morphology was observed for the impregnation catalyst, leading to significant catalytic activity degradation. An aerogel catalyst containing 10% Ni showed the best catalytic stability and the lowest rate of carbon deposition among the aerogel catalysts due to its small Ni particle size and strong metal-support interaction. (C) 2008 Elsevier B.V. All rights reserved.
KeywordCh4-co2 Reforming Aerogel Ni/al2o3 Catalyst Fluidized Bed Carbon Deposition
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fuproc.2008.08.004
Indexed BySCI
Language英语
WOS KeywordPARTIAL OXIDATION ; FIXED-BED ; CARBON DEPOSITION ; MAGNETIC-FIELD ; METHANE ; CO2 ; CH4 ; PARTICLES ; NI/SIO2 ; REACTOR
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000262206800012
Citation statistics
Cited Times:128[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6776
Collection多相复杂系统国家重点实验室
Corresponding AuthorZhu, QS
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.China Natl Bluestar Grp Corp, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Hao, Zhigang,Zhu, Qingshan,Jiang, Zheng,et al. Characterization of aerogel Ni/Al2O3 catalysts and investigation on their stability for CH4-CO2 reforming in a fluidized bed[J]. FUEL PROCESSING TECHNOLOGY,2009,90(1):113-121.
APA Hao, Zhigang,Zhu, Qingshan,Jiang, Zheng,Hou, Baolin,Li, Hongzhong,&Zhu, QS.(2009).Characterization of aerogel Ni/Al2O3 catalysts and investigation on their stability for CH4-CO2 reforming in a fluidized bed.FUEL PROCESSING TECHNOLOGY,90(1),113-121.
MLA Hao, Zhigang,et al."Characterization of aerogel Ni/Al2O3 catalysts and investigation on their stability for CH4-CO2 reforming in a fluidized bed".FUEL PROCESSING TECHNOLOGY 90.1(2009):113-121.
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