Detailed kinetic study of fischer-tropsch synthesis on co/zro2/sio2 catalyst
文献类型：期刊论文
| 作者 | Chang, J; Teng, BT; Bai, L; Chen, JG; Zhang, RL; Xu, YY; Xiang, HW; Li, YW; Sun, YH |
| 刊名 | Chinese journal of catalysis
 |
| 出版日期 | 2005-10-01 |
| 卷号 | 26期号:10页码:859-868 |
| 关键词 | Cobalt-based catalyst Fischer-tropsch synthesis Reaction kinetics Kinetic model |
| ISSN号 | 0253-9837 |
| 通讯作者 | Xiang, hw() |
| 英文摘要 | The detailed kinetics of the fischer-tropsch (f-t) synthesis on the co/zro2/sio2 catalyst was studied in an integral fixed-bed reactor. the experimental conditions were varied as follows: t = 473 similar to 503 k, p = 1.5 similar to 4.0 mpa and h-2/co feed ratio = 1.0 similar to 3.0. based on the reliable mechanisms obtained in part i of this series study, ten sets of langmuir-hinselwood-hougen-watson type kinetic models were derived, in which both the alkyl and alkylidene carbon chain propagation pathways of the f-t synthesis were considered. in construction of the kinetic models, cos direct dissociation and hydrogen-assisted dissociation were assumed as the rate-determining steps. the polymerization character of the f-t synthesis and its irreversibility were also accounted in the model derivations. using these kinetic models, the information of syngas consumption and product distribution is obtained self-consistently. after regressions of the candidate models, the results of discriminations show that the kinetic model based on the alkyl propagation pathway, starting from the cos direct dissociation, can describe the reaction performance better than the other models. the cos dissociation is an important elementary step to determine the overall rates of the f-t synthesis reactions with an activation energy of 86.48 kj/mol on the co/zro2/sio2 catalyst. the kinetic parameters are in agreement with the reported values obtained from theoretic research. |
| WOS关键词 | PRODUCT DISTRIBUTIONS ; OLEFIN READSORPTION ; INTRINSIC KINETICS ; SUPPORTED COBALT ; SLURRY-PHASE ; SELECTIVITY ; MODEL ; HYDROCARBONS ; IRON |
| WOS研究方向 | Chemistry ; Engineering |
| WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000233264100010 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2377503 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Xiang, HW |
| 作者单位 | 1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, J,Teng, BT,Bai, L,et al. Detailed kinetic study of fischer-tropsch synthesis on co/zro2/sio2 catalyst[J]. Chinese journal of catalysis,2005,26(10):859-868. |
| APA | Chang, J.,Teng, BT.,Bai, L.,Chen, JG.,Zhang, RL.,...&Sun, YH.(2005).Detailed kinetic study of fischer-tropsch synthesis on co/zro2/sio2 catalyst.Chinese journal of catalysis,26(10),859-868. |
| MLA | Chang, J,et al."Detailed kinetic study of fischer-tropsch synthesis on co/zro2/sio2 catalyst".Chinese journal of catalysis 26.10(2005):859-868. |
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来源：中国科学院大学
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