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Attrition-resistant Ni-Mg/Al2O3 catalyst for fluidized bed syngas methanation
Cui, Dianmiao1,2; Liu, Jiao1; Yu, Jian1; Su, Fabing1; Xu, Guangwen1
2015
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
Volume5Issue:6Pages:3119-3129
AbstractSpray granulation was applied to prepare attrition-resistant Ni-Mg/Al2O3 catalysts for fluidized bed methanation. The tested binders included alumina sol (AS, pH = 4.0), acidic silica sol (SS, pH = 3.0), alumina-modified silica sol (AM, pH = 8.7) and alkaline silica sol (CC, pH = 9.6). By air-jet attrition test it was found that the attrition strength of the resulting catalysts followed an order of C-SS > C-AM > C-AS > C-CC, here C-SS, as an example, refers to the catalyst using SS as the binder. Characterization shows that the higher the volume of pores above 20 nm, the less attrition resistance of the catalyst there was, especially for catalysts using silica binders, whose high particle density was also beneficial to improving the attrition resistance of the catalyst. Syngas methanation over the catalysts in a fluidized bed at 2.5 MPa clarified an activity order of C-AS > C-SS > C-AM approximate to C-CC at 623-923 K. The AS binder enabled highly dispersed metallic Ni and many surface active sites for methanation reactions. Continuous methanation for 20 h at 900 K and 2.5 MPa verified the stability of the catalysts using the AS, SS and CC binders, but the activity clearly decreased over C-AM. Analyzing the spent catalysts via TPO demonstrated that a high amount of inactive carbon on C-AM caused its deactivation in the 20 h test.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c5cy00066a
Indexed BySCI
Language英语
WOS KeywordFISCHER-TROPSCH CATALYSTS ; SYNTHETIC NATURAL-GAS ; METAL-SUPPORT INTERACTION ; IRON CATALYSTS ; NICKEL ; TEMPERATURE ; HYDROGENATION ; DEPOSITION ; REACTORS ; ALUMINA
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000355487900009
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19269
Collection多相复杂系统国家重点实验室
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
Recommended Citation
GB/T 7714
Cui, Dianmiao,Liu, Jiao,Yu, Jian,et al. Attrition-resistant Ni-Mg/Al2O3 catalyst for fluidized bed syngas methanation[J]. CATALYSIS SCIENCE & TECHNOLOGY,2015,5(6):3119-3129.
APA Cui, Dianmiao,Liu, Jiao,Yu, Jian,Su, Fabing,&Xu, Guangwen.(2015).Attrition-resistant Ni-Mg/Al2O3 catalyst for fluidized bed syngas methanation.CATALYSIS SCIENCE & TECHNOLOGY,5(6),3119-3129.
MLA Cui, Dianmiao,et al."Attrition-resistant Ni-Mg/Al2O3 catalyst for fluidized bed syngas methanation".CATALYSIS SCIENCE & TECHNOLOGY 5.6(2015):3119-3129.
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