A highly active bimetallic supported Rh-Co hydroformylation catalyst prepared from RhCl3 and Co-2(CO)(8)
文献类型：期刊论文
| 作者 | Huang, L; Xu, Y |
| 刊名 | catalysis letters
 |
| 出版日期 | 1998 |
| 卷号 | 55期号:3-4页码:227-234 |
| 关键词 | RhCl3 Co-2(CO)(8) SiO2 surface-bonded Rh+(CO)(2) highly active Rh-Co catalyst hydroformylation |
| 英文摘要 | the preparation of a highly active bimetallic sio2-supported rh-co catalyst from rhcl3 and co-2(co)(8) (rh:co = 1:3 atomic ratio) has been studied by ir spectroscopy and ethylene hydroformylation, etc. two steps are involved in the preparative process: (1) surface-mediated synthesis of rh+(co)(2)/sio2 from calcined rhcl3/sio2; (2) impregnation of rh+(co)(2)/sio2 with a co-2(co)(8) solution followed by h-2 reduction at 623 k. the ir results of reductive carbonylation of calcined rhcl3/sio2 have been compared to those of uncalcined rhcl3/sio2 at 373 k. in situ ir observations, extraction results and elemental analysis suggest that approximately 50% of rhcl3 are transformed to rh2o3 on the sio2 surface and that calcined rhcl3/sio2 is converted to a mixture of [rh(co)(2)cl](2) and [rh(co)(2)o-s](2) (o-s: surface oxygen) under co at 373 k. when this sio2-supported mixture was submitted to impregnation with a co-2(co)(8) solution at room temperature, ir study and elemental analysis show that [rh(co)(2)cl](2) reacts easily with co-2(co)(8) on the surface to give rhco3(co)(12), whereas [rh(co)(2)o-s](2) does not react with co-2(co)(8). catalytic study in steady-state ethylene hydroformylation shows that a catalyst thus derived is more active than a catalyst derived from rhco3(co)(12)/sio2 and a catalyst derived by coimpregnation of [rh(co)(2)cl](2) and co-2(co)(8) on sio2. this result suggests that the high rhodium dispersion of [rh(co)(2)o-s](2) plays a crucial role in the formation of highly dispersed bimetallic rh-co sites. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | reductive carbonylation ; chemisorbed co ; reactivity ; rh6(co)16 ; rhodium ; insertion ; chemistry ; rh+(co)2 ; clusters ; ir |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000077537200018 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/138484]  |
| 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 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, L,Xu, Y. A highly active bimetallic supported Rh-Co hydroformylation catalyst prepared from RhCl3 and Co-2(CO)(8)[J]. catalysis letters,1998,55(3-4):227-234. |
| APA | Huang, L,&Xu, Y.(1998).A highly active bimetallic supported Rh-Co hydroformylation catalyst prepared from RhCl3 and Co-2(CO)(8).catalysis letters,55(3-4),227-234. |
| MLA | Huang, L,et al."A highly active bimetallic supported Rh-Co hydroformylation catalyst prepared from RhCl3 and Co-2(CO)(8)".catalysis letters 55.3-4(1998):227-234. |
入库方式： OAI收割
来源：大连化学物理研究所
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