摘要
研究了Co的掺杂对Pt/CNTs催化剂催化加氢肉桂醛反应性能的影响。结果发现,Co的掺杂对Pt/CNTs催化剂催化加氢活性起到明显促进作用,并有利于C O基团的选择性加氢。Pt-0.17%Co/CNTs催化剂显示了较高的肉桂醇加氢选择性,在反应条件为70℃、2 MPa和1.5 h时,肉桂醛的加氢转化率达到97.1%,生成肉桂醇的选择性达到93.6%。同时,初步研究了该催化剂上肉桂醛催化加氢反应动力学,催化反应的活化能为26.5kJ.mol-1。
The Pt-Co catalysts supported on carbon nanotubes （CNTs） were prepared by wet impregnation and used for the selective hydrogenation of cinnamaldehyde （CMA） to the corresponding cinnamyl alcohol （CMO） . The results showed that the addition of Co could improve the catalytic activity and selectivity for C-O bond. The Pt-0.17% （mass） Co/CNTs catalyst exhibited the best hydrogenation activity of 97.1% conversion and selectivity for C-O bond of 93.6% to cinnamyl alcohol （CMO） at 70℃ under 2.0 MPa H2 pressure with the reaction time of 1.5h. The study of hydrogenation kinetics of CMA over Pt-0.17%（mass） Co/CNTs catalyst indicated that the activation energy of hydrogenation of cinnamaldehyde was 26.5kJ·mol^-1.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2009年第7期1668-1672,共5页
CIESC Journal
