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CO methanation over a macro-mesoporous Al2O3 supported Ni catalyst in a fluidized bed reactor
Li, Jun; Zhou, Li; Zhu, Qingshan; Li, Hongzhong
2015
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume5Issue:79Pages:64486-64494
AbstractThe synthesis and characterization of highly active and stable Ni nanoparticles supported on macro-mesoporous Al2O3 as a CO methanation catalyst for the production of synthetic natural gas are reported. The macro-mesoporous Ni-Al2O3 catalyst (MNC) is synthesized by combination of sol-gel and supercritical drying methods. The MNC showed much higher activity and higher thermal stability for methanation than the catalyst obtained via the conventional wet impregnation method, especially under harsh conditions of high temperatures and high GHSV (90 000 h(-1)). The enhancement in activity of the synthesized MNC catalyst is attributed to the highly stable and smaller Ni nanoparticles that are embedded on the macro-mesoporous structure. The MNC also showed a higher rate constant and lower diffusion activation energy, which should be attributed to the macro-mesoporous structure that facilitated the diffusion of gas products and then enhanced the removal of reaction heat from the catalyst surface. Thus leading to a higher resistance to Ni sintering and carbon deposition.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c5ra10424f
Indexed BySCI
Language英语
WOS KeywordSYNTHETIC NATURAL-GAS ; CARBON-DIOXIDE ; MICROCHANNEL REACTOR ; SYNGAS METHANATION ; NI/AL2O3 CATALYST ; NICKEL-CATALYSTS ; NANOPARTICLES ; DEPOSITION ; KINETICS ; HYDROGENATION
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000358786400058
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19426
Collection多相复杂系统国家重点实验室
AffiliationChinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Jun,Zhou, Li,Zhu, Qingshan,et al. CO methanation over a macro-mesoporous Al2O3 supported Ni catalyst in a fluidized bed reactor[J]. RSC ADVANCES,2015,5(79):64486-64494.
APA Li, Jun,Zhou, Li,Zhu, Qingshan,&Li, Hongzhong.(2015).CO methanation over a macro-mesoporous Al2O3 supported Ni catalyst in a fluidized bed reactor.RSC ADVANCES,5(79),64486-64494.
MLA Li, Jun,et al."CO methanation over a macro-mesoporous Al2O3 supported Ni catalyst in a fluidized bed reactor".RSC ADVANCES 5.79(2015):64486-64494.
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