摘要
考察了ＳｉＯ２负载的（ＰＰｈ３）２ＨＰｔ（μ－ＣＯ）（μ－ＰＰｈ２）Ｍ（ＣＯ）４和（ｄｐｐｅ）Ｒｈ（μ－ＣＯ）２Ｍ（ＣＯ）３（Ｍ＝Ｃｒ、Ｍｏ、Ｗ；ｄｐｐｅ＝Ｐｈ２Ｐ（ＣＨ２）２ＰＰｈ２）异双核络合物催化剂催化ＣＯ２氢化反应的活性和选择性．两者皆表现出较高的催化活性和含氧化合物选择性，而前者比后者更好．
The SiO 2 supported heterobinuclear metal complexes, (PPh 3) 2 HPt(μ CO)(μ PPh 2)M(CO) 4 and (dppe)Rh(μ CO) 2M(CO) 3(M=Cr、Mo、W; dppe=Ph 2PCH 2CH 2PPh 2), as catalysts for CO 2 hydrogenation were reported. Both catalysts exhibited high catalytic activity and selectivity toward oxygenate. The activity and selectivity of Pt M/SiO 2 catalyst were higher than those of Rh M/SiO 2 catalyst. The hydrogenation of coordinated CO in the supported complexes of these catalysts was also investigated. The FT IR spectra of supported complex catalysts of Pt W/SiO 2 and Rh W/SiO 2 catalysts were recorded under hydrogen atmosphere at 160-240℃. It is suggested that the catalytic active species are related to the original complex.
出处
《分子催化》
EI
CAS
CSCD
1996年第5期363-367,共5页
Journal of Molecular Catalysis(China)
关键词
氢化反应
络合物催化剂
催化剂
催化
二氧化硅
Heterobinuclear metal complex, CO 2 hydrogenation, Supported complex catalyst
