Selective synthesis of middle isoparaffins via a two-stage Fischer-Tropsch reaction: Activity investigation for a hybrid catalyst
文献类型：期刊论文
| 作者 | Zhao, TS; Chang, J; Yoneyama, Y; Tsubaki, N |
| 刊名 | industrial & engineering chemistry research
 |
| 出版日期 | 2005-02-16 |
| 卷号 | 44期号:4页码:769-775 |
| 英文摘要 | the 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. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | engineering, chemical |
| 研究领域[WOS] | engineering |
| 关键词[WOS] | synthesis gas ; bimetallic catalysts ; light-hydrocarbons ; cobalt catalysts ; conversion ; isoalkanes ; zeolites ; hzsm-5 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000227055500016 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/10210]  |
| 专题 | 中国科学院广州能源研究所 |
| 作者单位 | 1.Toyama Univ, Sch Engn, Dept Appl Chem, Toyama 9308555, Japan 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：广州能源研究所
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