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Highly active hydrogenation catalysts from titanocenes and sodium hydride of nanometric size
Fan, YH; Liao, SJ; Xu, J; Qian, YL; Huang, JL
关键词Titanocenes Nanometric Sodium Hydride Catalytic Hydrogenation Olefins
刊名CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
1997-10-01
18期:10页:1683-1687
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]ALKALI-METAL HYDRIDES ; TITANIUM COMPLEXES
英文摘要The hydrogenation of 1-hexene was catalyzed by titanocene with various substituted groups in combination with nanometric sodium hydride. When the steric hindrance of the substituted group on the cyclopentadienyl ring is relatively small, the titanium complex gives high initial catalytic activity but poor stability, whereas when the steric hindrance is large(for instance, five-memhered ring or six-memhered ring), the titanium complex gives lower initial catalytic acitivty but better stabilty, At normal temperature and pressure, a maximum turnover frequency (TOFmax) of 110 mol H-2/(mol Ti . s) and a turnover (TO) of 22,200 mol H-2/(mol Ti) were obtained by using bis[(1'-ethyl)cyclohexyl-cyclopentadienyl] TiCl2/NaH* as catalyst. Only the terminal olefin could be hydrogenated by using this kind of catalytic system, Isomerization of olefins did not occur in the course of hydrogenation, It is the key factor that the nanometric NaH* was used as the cocatalyst in the reaction, The combination of titanocenes with commercial sodium hydride which was synthesized at high temperatures did not display any catalytic activity for the hydrogenation of 1-hexene.
语种英语
WOS记录号WOS:A1997YC46500027
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142796
专题中国科学院大连化学物理研究所
作者单位1.CHINESE ACAD SCI, DALIAN INST CHEM PHYS, DALIAN 116023, PEOPLES R CHINA
2.LIAONING NORMAL UNIV, DEPT CHEM, DALIAN 116029, PEOPLES R CHINA
3.E CHINA UNIV SCI & TECHNOL, INST APPL CHEM, SHANGHAI 200237, PEOPLES R CHINA
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Fan, YH,Liao, SJ,Xu, J,et al. Highly active hydrogenation catalysts from titanocenes and sodium hydride of nanometric size[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,1997,18(10):1683-1687.
APA Fan, YH,Liao, SJ,Xu, J,Qian, YL,&Huang, JL.(1997).Highly active hydrogenation catalysts from titanocenes and sodium hydride of nanometric size.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,18(10),1683-1687.
MLA Fan, YH,et al."Highly active hydrogenation catalysts from titanocenes and sodium hydride of nanometric size".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 18.10(1997):1683-1687.
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