摘要
制备了两种聚乙烯吡咯烷酮(PVP)稳定的γ-Al_2O_3负载型稀土金属催化剂(PVP-La/Al_2O_3,PVP-Ce/Al_2O_3),并首次将乙醇催化重整制氢运用于马来酸酐(MA)液相加氢制备四氢呋喃(THF)的过程中。同时,对比研究了一种PVP稳定的钯催化剂(PVP-Pd/Al_2O_3)催化马来酸酐加氢的活性。结果表明,两种稀土金属催化剂显示出比PVP-Pd/Al_2O_3更优的催化性能。进而,系统考察了反应条件对PVPLa/Al_2O_3催化马来酸酐加氢反应的影响。在优化的条件下,MA实现了100%的转化,THF的选择性超过95.0%,最高达到98.2%的THF选择性。
Two kinds of PVP-stabilized rare earth catalysts （PVP-La/Al2O3 and PVP-Ce/Al2O3 ） supported on Al2O3 are prepared. Furthermore, solvent hydrogen of ethanol reforming is originally applied in the in-situ hydrogenation of maleic anhydride （MA） to tetrahydrofuran （THF）. For comparison,the catalytic efficiency of a PVP-stabilized Pd catalyst （PVP-Pd/ Al2O3 ） towards the selective hydrogenation of MA has also been described. The results reveal that two rare earth catalysts exhibited good catalytic activities relative to PVP-Pd/Al2O3. Furthermore, effects of various reaction conditions on the hydrogenation of maleic anhydride by PVP-La/Al2O3 are systematically evaluated in this paper. Under an optimum condition, a 100% MA conversion with more than 95% THF selectivity is obtained,and a maximum of 98% THF selectivity is achieved.
出处
《四川理工学院学报（自然科学版）》
CAS
2009年第4期75-81,共7页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
基金
support from Key Subjectof China Zigong Science&Technology Burear(No.07GX015)~~
关键词
催化加氢
马来酸酐
四氢呋喃
乙醇重整
La催化剂
catalytic hydrogenation
maleic anhydride
tetrahydrofuran
ethanol reforming
La （III） catalyst
