CAS OpenIR  > 研究所(批量导入)
Intercorrelation of structure and performance of Ni-Mg/Al2O3 catalysts prepared with different methods for syngas methanation
Alternative TitleCatal. Sci. Technol.
Liu, Jiao; Yu, Jian; Su, Fabing; Xu, Guangwen
2014
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
Volume4Issue:2Pages:472-481
AbstractNi-Mg/Al2O3 catalysts prepared with methods of co-precipitation (CP), homogeneous precipitation (HP) and acid-base pairing (ABP) were tested for syngas methanation at 623-923 K in a stainless steel fixed bed reactor and further characterized to justify their performances. The Ni-Mg/Al2O3 catalysts prepared with CP using NH4OH, NaOH and Na2CO3 as the precipitants followed an activity order of NaOH > NH4OH > Na2CO3. Comparing further with the samples prepared by HP and ABP resulted in an activity order of HP > ABP > CP (NaOH) for syngas methanation under 0.1 MPa. For CO conversion, a transition of reaction control from kinetic dominance to thermodynamic dominance was observed at about 780 K. Performing 20 h continuous tests at 773 K and under 0.1 and 2.5 MPa further verified the stability of the HP, ABP and CP (NaOH) catalysts for syngas methanation. Analyzing the catalysts via H-2-TPR clarified that a lower amount of free NiO and a stronger interaction between the dispersed NiO and Al2O3 or MgO ensured better catalytic performance for methanation. The study also identified two types of carbon deposited on the surface of the spent catalysts.; Ni-Mg/Al2O3 catalysts prepared with methods of co-precipitation (CP), homogeneous precipitation (HP) and acid-base pairing (ABP) were tested for syngas methanation at 623-923 K in a stainless steel fixed bed reactor and further characterized to justify their performances. The Ni-Mg/Al2O3 catalysts prepared with CP using NH4OH, NaOH and Na2CO3 as the precipitants followed an activity order of NaOH > NH4OH > Na2CO3. Comparing further with the samples prepared by HP and ABP resulted in an activity order of HP > ABP > CP (NaOH) for syngas methanation under 0.1 MPa. For CO conversion, a transition of reaction control from kinetic dominance to thermodynamic dominance was observed at about 780 K. Performing 20 h continuous tests at 773 K and under 0.1 and 2.5 MPa further verified the stability of the HP, ABP and CP (NaOH) catalysts for syngas methanation. Analyzing the catalysts via H-2-TPR clarified that a lower amount of free NiO and a stronger interaction between the dispersed NiO and Al2O3 or MgO ensured better catalytic performance for methanation. The study also identified two types of carbon deposited on the surface of the spent catalysts.
KeywordNi/al2o3 Catalysts Carbon-dioxide Gas Support Alumina Co Hydrogenation Nio/al2o3 Removal Aerogel
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c3cy00601h
URL查看原文
Indexed BySCI
Language英语
WOS KeywordNI/AL2O3 CATALYSTS ; CARBON-DIOXIDE ; GAS ; SUPPORT ; ALUMINA ; CO ; HYDROGENATION ; NIO/AL2O3 ; REMOVAL ; AEROGEL
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000329927900024
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8130
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jiao,Yu, Jian,Su, Fabing,et al. Intercorrelation of structure and performance of Ni-Mg/Al2O3 catalysts prepared with different methods for syngas methanation[J]. CATALYSIS SCIENCE & TECHNOLOGY,2014,4(2):472-481.
APA Liu, Jiao,Yu, Jian,Su, Fabing,&Xu, Guangwen.(2014).Intercorrelation of structure and performance of Ni-Mg/Al2O3 catalysts prepared with different methods for syngas methanation.CATALYSIS SCIENCE & TECHNOLOGY,4(2),472-481.
MLA Liu, Jiao,et al."Intercorrelation of structure and performance of Ni-Mg/Al2O3 catalysts prepared with different methods for syngas methanation".CATALYSIS SCIENCE & TECHNOLOGY 4.2(2014):472-481.
Files in This Item:
File Name/Size DocType Version Access License
Intercorrelation of (570KB) 限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Jiao]'s Articles
[Yu, Jian]'s Articles
[Su, Fabing]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Jiao]'s Articles
[Yu, Jian]'s Articles
[Su, Fabing]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Jiao]'s Articles
[Yu, Jian]'s Articles
[Su, Fabing]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.