GIEC OpenIR  > 中国科学院广州能源研究所
Selective synthesis of middle isoparaffins via a two-stage Fischer-Tropsch reaction: Activity investigation for a hybrid catalyst
Zhao, TS; Chang, J; Yoneyama, Y; Tsubaki, N
2005-02-16
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume44Issue:4Pages:769-775
AbstractThe activity of hybrid catalysts for the direct isoparaffin synthesis, especially C-4-C-6 with a very high octane number, from Fischer-Tropsch synthesis (FTS) in a two-stage reactor was investigated. The hybrid of CO/SiO2 and H-ZSM-5 was used as the first-stage reaction catalyst, and different types of H zeolites alone or their hybrid with Pd/SiO2 were used as the second-stage reaction catalysts. The obtained results demonstrated that the carbon number of products could terminate at 6 and isoparaffin hydrocarbons could be synthesized in very high selectivity from synthesis gas compared with that in a single-stage reaction using a physically mixed CO/SiO2 and H-ZSM-5 catalyst. The first-stage CO/SiO2 + H-ZSM-5 catalyst made the products mainly distribute in the C-1-C-11 range and considerably increase in the corresponding isoparaffins because of successive cracking, as well as isomerization, of the primary FTS products on H-ZSM-5. The selectivities of isoparaffins with much lower carbon number were further raised through the hydrocracking and isomerization of the first-stage reaction products on the second-stage H-zeolite catalysts in the presence of hydrogen. In addition, the effect of the reaction temperature suggested that an appropriate temperature combination of the first- and second-stage reactions was necessary. Using CO/SiO2 + H-ZSM-5 and H-Beta + Pd/SiO2 as the first- and second-stage catalysts, respectively, with a suitable temperature selection for the first- and secondstage reactor, a selectivity of 64.4% for C-4-C-6 isoparaffins was achieved. With the hybrid of H-ZSM-15 in the first-stage catalyst, heavier hydrocarbon deposition was removed near CO/SiO2 and the catalyst life was stabilized; with the hybrid of Pd/SiO2 in the second-stage catalyst, the acid sites of H zeolites were maintained and strengthened by means of supposed hydrogen spillover. As a result of the overall effect, the lifetime of the catalysts was effectively extended.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ie040097o
WOS Subject ExtendedEngineering
WOS KeywordSYNTHESIS GAS ; BIMETALLIC CATALYSTS ; LIGHT-HYDROCARBONS ; COBALT CATALYSTS ; CONVERSION ; ISOALKANES ; ZEOLITES ; HZSM-5
Indexed BySCI
Language英语
WOS SubjectEngineering, Chemical
WOS IDWOS:000227055500016
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10210
Collection中国科学院广州能源研究所
Affiliation1.Toyama Univ, Sch Engn, Dept Appl Chem, Toyama 9308555, Japan
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou, Peoples R China
Recommended Citation
GB/T 7714
Zhao, TS,Chang, J,Yoneyama, Y,et al. Selective synthesis of middle isoparaffins via a two-stage Fischer-Tropsch reaction: Activity investigation for a hybrid catalyst[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2005,44(4):769-775.
APA Zhao, TS,Chang, J,Yoneyama, Y,&Tsubaki, N.(2005).Selective synthesis of middle isoparaffins via a two-stage Fischer-Tropsch reaction: Activity investigation for a hybrid catalyst.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,44(4),769-775.
MLA Zhao, TS,et al."Selective synthesis of middle isoparaffins via a two-stage Fischer-Tropsch reaction: Activity investigation for a hybrid catalyst".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 44.4(2005):769-775.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhao, TS]'s Articles
[Chang, J]'s Articles
[Yoneyama, Y]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhao, TS]'s Articles
[Chang, J]'s Articles
[Yoneyama, Y]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhao, TS]'s Articles
[Chang, J]'s Articles
[Yoneyama, Y]'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.