亚磷酸氢锆/聚乙烯吡咯烷酮/钯催化剂的催化加氢性能  

Hydrogenation Activity of Zirconium Phosphite-Polyvinylpyrrolidone-Palladium Catalyst

作　　者：傅相锴[1] 马学兵[1] 温淑英[1] 

机构地区：[1]西南师范大学化学化工学院,重庆400715

出　　处：《应用化学》1998年第1期17-21,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金;中国石化总公司石油化工科学院联合资助

摘　　要：制得了亚磷酸氢锆-聚乙烯吡咯烷酮（Zr（HPO3）2·H2O-PVP）载体和相应的钯催化剂．用IR、TG、TDA、BET表面积和XRS对其进行表征．载体中PVP的含量可达到41～51g／mol．所制得的钯催化剂对所试验的7个取代烯烃和硝基苯的常压催化加氢转化率皆高于97．4％．研究了保温晶化时间、Pd的质量分数、VP单元与Pd的比值、催化剂用量、反应温度、溶剂、介质的pH值和底物对催化加氢活性的影响．催化剂重复使用15次无明显失活．最后将催化剂与同条件下的Zr（HPO4）2·H2O-PVP－Pd催化剂活性作了比较．Zirconium phosphite-polyvinylpyrrolidone (Zr(HPO3)2. H2O-PVP) supporter andcorresponding palladium catalysts were prepared and characterized by IR, TG, DTA, BETsurface area and XPS measurements, The immobilized PVP on the supporter amounted to 41to 51 gram per mol Zr(HPO3)2. H2O. The Zr(HPO3)2. H2O-PVP-Pd catalysts exhibit highactivities: in hydrogenation of 7 tested substituted olefins and nitrobenzene under atmospher-ic pressure the conversions were above 97. 3%. The influences of crystallization time, Pd %,VP unit/Pd ratio, catalyst amount used in the hydrogenation, reaction temperature, sol-vents, pH of the media and substractes on the catalytic activity were examined. The cata-lysts can be used for 15 times without serious loss of the activity. The comparation of thecatalyst with Zr(HPO4)2·H2O-PVP-Pd is also described.

关 键 词：亚磷酸氢锆 聚乙烯吡咯烷酮 钯催化剂 加氢 催化 

分 类 号：O643.38[理学—物理化学]