DICP OpenIR
Impact of mesoporous structure of acid-treated clay on nickel dispersion and carbon deposition for CO methanation
Yang, Xuzhuang1; Wendurima1; Gao, Guanjun1; Shi, Quanquan2; Wang, Xin1; Zhang, Jianan1; Han, Chenhui1; Wang, Jie1; Lu, Huailiang1; Liu, Jie1; Tong, Min1
KeywordCo Methanation Sng Macro-mesoporous Material Montmorillonite
Source PublicationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
2014-02-25
DOI10.1016/j.ijhydene.2013.12.044
Volume39Issue:7Pages:3231-3242
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels
WOS KeywordSUBSTITUTE NATURAL-GAS ; SELECTIVE METHANATION ; SYNGAS METHANATION ; NI/AL2O3 CATALYSTS ; METAL-CATALYSTS ; DIOXIDE ; MONOXIDE ; NI/ZRO2 ; BED
AbstractNickel catalysts supported on different acid-treated clays were prepared by the impregnation method in order to investigate the effect of the pore structures of supports on the dispersion and the chemical states of nickel species, and thus on the carbon depositions resulted from the dissociation of the CO molecules adsorbed on different active nickel sites. The catalysts and supports were characterized by the X-ray diffraction (XRD), the transmittance electron microscopy (TEM), the H-2 temperature-programmed reduction (H-2-TPR), the nitrogen adsorption-desorption, and the thermogravimetry and differential thermal analysis (TG-DTA). The CO methanation performance of the catalyst was investigated at a temperature range from 300 degrees C to 500 degrees C. The results indicated that the dispersion and the states of the nickel species on the support were influenced strongly by the pore structures of the acid-treated clays, and only the mesopores composed by partly damaged clay layers were conducive to forming the active nickel species, and thus reducing the deposition of the inactive carbon and improving the stability of the catalyst. The carbon species deposited on different active sites was slightly different in the oxidative properties when it was oxidized in air. A fraction of aluminum in the clays was leached out by acid, which decreased the possibility of forming the spinel phase of nickel aluminate in the catalyst. The highly dispersed nickel species showed little relevance to the high activity of the catalyst, but it exhibited a strong relation to the nickel sites from the bulk nickel species. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Language英语
WOS IDWOS:000331917400020
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145406
Collection中国科学院大连化学物理研究所
Affiliation1.Inner Mongolia Univ, Sch Chem & Chem Engn, Hohhot 010021, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Yang, Xuzhuang,Wendurima,Gao, Guanjun,et al. Impact of mesoporous structure of acid-treated clay on nickel dispersion and carbon deposition for CO methanation[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2014,39(7):3231-3242.
APA Yang, Xuzhuang.,Wendurima.,Gao, Guanjun.,Shi, Quanquan.,Wang, Xin.,...&Tong, Min.(2014).Impact of mesoporous structure of acid-treated clay on nickel dispersion and carbon deposition for CO methanation.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,39(7),3231-3242.
MLA Yang, Xuzhuang,et al."Impact of mesoporous structure of acid-treated clay on nickel dispersion and carbon deposition for CO methanation".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39.7(2014):3231-3242.
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