Enantioselective Hydrogenation of alpha-Ketoesters on Mesoporous Matrix Supported Platinum Catalysts
文献类型：期刊论文
| 作者 | Chen Zhijian; Li Xiaohong; Li Can |
| 刊名 | chinese journal of catalysis
 |
| 出版日期 | 2011 |
| 卷号 | 32期号:1页码:155-161 |
| 关键词 | mesoporous matrix platinum catalyst cinchonidine chiral modification ethyl 2-oxo-4-phenyl-butyrate ethyl pyruvate enantioselective hydrogenation |
| 英文摘要 | the asymmetric hydrogenation of ethyl 2-oxo-4-phenyl-butyrate (eopb) over the pt catalysts modified by cinchonidine using mesoporous sba-15, cubic mesoporous silica, and al(2)o(3) modified cubic mesoporous silica as matrix was studied. the results showed that in the channels of mesoporous sba-15, the enantioselectivity and conversion are enhanced in larger sized channels compared to those of the hydrogenation in smaller sized channels. when the channel size of sba-15 increases from 6.2 nm to 7.6 nm and to 9.2 nm, the hydrogenation ee is 22.0%, 36.0%, and 50.0%, respectively. the ee (53.8%) on the cubic mesoporous silica support is obviously higher than that (36.0%) on the sba-15 support with similar channel size, and the ee on the al(2)o(3) modified cubic mesoporous silica support reaches 79.3%. these facts showed that the mass transfer or steric clash has important impacts on the enantioselectivity and conversion of the enantioselective hydrogenation of eopb. in the enantioselective hydrogenation of ethyl pyruvate, the al(2)o(3)-grafted cubic mesoporous silica supported pt catalyst exhibits high activity and excellent enantioselectivity (cc over 90.2%), which is comparable to that of the best commercial pt/al(2)o(3) catalysts. the high catalytic performance is attributed not only to the developed cubic channel structure of the pt catalyst support, but also to the enhancement of the interaction of pt nanoparticles and the al(2)o(3)-grafted support, which would improve the modification of cinchonidine on the surface of pt particles. these indicate that the al(2)o(3) modified cubic mesoporous silica is a novel, promising support material for the heterogeneous chiral catalysis. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | asymmetric hydrogenation ; activated ketones ; chiral catalysis ; epoxidation ; nanopores ; surfaces ; pyruvate ; solvents |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000287107200025 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142481]  |
| 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, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Zhijian,Li Xiaohong,Li Can. Enantioselective Hydrogenation of alpha-Ketoesters on Mesoporous Matrix Supported Platinum Catalysts[J]. chinese journal of catalysis,2011,32(1):155-161. |
| APA | Chen Zhijian,Li Xiaohong,&Li Can.(2011).Enantioselective Hydrogenation of alpha-Ketoesters on Mesoporous Matrix Supported Platinum Catalysts.chinese journal of catalysis,32(1),155-161. |
| MLA | Chen Zhijian,et al."Enantioselective Hydrogenation of alpha-Ketoesters on Mesoporous Matrix Supported Platinum Catalysts".chinese journal of catalysis 32.1(2011):155-161. |
入库方式： OAI收割
来源：大连化学物理研究所
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