Surface behaviors of monometallic and cobalt-containing rhodium catalysts on SiO2 in relation to their catalytic properties for hydroformylation
文献类型：期刊论文
| 作者 | Huang, L |
| 刊名 | BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE
 |
| 出版日期 | 1996 |
| 卷号 | 133期号:4页码:359-367 |
| 关键词 | Sio2-supported Rhodium Rhodium Oxidation Promotion Of Cobalt Sio2-supported RhCo3(Co)(12) Preservation Of Rhco3 Regeneration Of RhCos(Co)(12) Hydroformylation |
| ISSN号 | 0037-8968 |
| 文献子类 | Article |
| 英文摘要 | The interactions of supported Rh-0 and cobalt-promoted Rh-0 with the SiO2 surface have been investigated by IR spectroscopy. The supported highly-dispersed rhodium particles derived by H-2 decarbonylation of Rh-6(CO)(16)/SiO2 are oxidized to isolated Rh+ by surface OH- via heating at 623 K under vacuum, which adsorbs CO to form Rh+(CO)(2). The conventional reduction of a mixture of rhodium and cobalt compounds supported on SiO2 is unlikely to give bimetallic RhCo particles and yield probably monometallic rhodium and cobalt particles. The interaction of Co-0 with Rh-0 in supported promoted catalysts suppresses the oxidation of Rh-0. The results show that the Co-0 promoter plays an electron-donating role, thus increasing the electron density of rhodium particles. The electronic effect can be correlated with the observed promotion of catalytic ethylene hydroformylation. IR study also demonstrates that the bimetallic RhCo3 cluster framework is retained intact on the SiO2 surface from thermal decarbonylation of RhCo3(CO)(12) under any atmosphere and RhCo3(CO)(12)/SiO2 readily regenerated from RhCo3 under CO at room temperature. In situ IR observations indicate that supported Rh-0 on Rh/SiO2 is an active site for hydroformylation and RhCo3(CO)(12)/SiO2 is responsible itself for the catalysis. Moreover, such a bimetallic cluster catalyst displays an enhanced activity for ethylene hydroformylation, about 20 times that of a Rh-4(CO)(12)/SiO2-derived monometallic catalyst. |
| WOS关键词 | TEMPERATURE-PROGRAMMED REDUCTION ; TRANSFORM INFRARED-SPECTROSCOPY ; METAL CLUSTER CARBONYLS ; SUPPORTED RH CATALYSTS ; RH/SIO2 CATALYSTS ; SELECTIVE HYDROFORMYLATION ; OLEFIN HYDROFORMYLATION ; CO HYDROGENATION ; MONOXIDE ; SILICA |
| WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:A1996UU39000005 |
| 出版者 | EDITIONS SCIENTIFIQUES ELSEVIER |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/168122]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Huang, L |
| 推荐引用方式 GB/T 7714 | Huang, L. Surface behaviors of monometallic and cobalt-containing rhodium catalysts on SiO2 in relation to their catalytic properties for hydroformylation[J]. BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE,1996,133(4):359-367. |
| APA | Huang, L.(1996).Surface behaviors of monometallic and cobalt-containing rhodium catalysts on SiO2 in relation to their catalytic properties for hydroformylation.BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE,133(4),359-367. |
| MLA | Huang, L."Surface behaviors of monometallic and cobalt-containing rhodium catalysts on SiO2 in relation to their catalytic properties for hydroformylation".BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE 133.4(1996):359-367. |
入库方式： OAI收割
来源：大连化学物理研究所
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