二氧化硅接枝黑荆树单宁负载钯纳米催化剂的制备及其催化加氢性能  

Preparation of Silica Bead Grafted with Black Wattle Tannins Supported Palladium(0) Catalysts and Their Catalytic Hydrogenation Properties

作　　者：李丽[1,2] 黄鑫[1] 廖学品[1] 石碧[1] 

机构地区：[1]四川大学制革清洁技术国家工程实验室,四川成都610065 [2]四川大学化学工程系,四川成都610065

出　　处：《皮革科学与工程》2010年第3期9-13,38,共6页Leather Science and Engineering

基　　金：国家自然科学基金重点项目(20536030),国家自然科学基金(20776090);全国百篇优秀博士论文作者专项基金(FANEDD200762)

摘　　要：以二氧化硅接枝黑荆树单宁为载体,制备了新型负载型钯纳米催化剂[SiO2-BTx-Pd(0)],并研究了该催化剂在不同反应条件下对丙烯醇液相加氢的催化活性及选择性。结果表明,SiO2-BTx-Pd(0)催化剂对丙烯醇催化加氢反应具有较高的催化活性和选择性。当以甲醇为溶剂,在温度为20℃和H2压力为1.0MPa时,SiO2-BT0.08-Pd(0)催化剂对丙烯醇的催化转化频率(TOF)为4703.7mol·mol-1·h-1,对目标产物正丙醇的选择性高达92.1%。催化剂重复使用5次后,催化活性和选择性无明显降低。A novel supported palladium catalyst [SiO2-BTx-Pd(0) ]was prepared using silica bead grafted with black wattle tannin(SiO2-BTx) as the supporting matrix,and the catalytic activity and selectivity were investigated under different reaction conditions.The experimental results indicated that SiO2-BTx-Pd(0) catalysts have high catalytic activity and selectivity for allyl alcohol hydrogenation.When SiO2-BT0.08-Pd(0) was used as the catalyst and the reaction was conducted in met-hanol at 20 ℃ under 1.0 MPa pressu...

关 键 词：黑荆树单宁 二氧化硅 负载型钯纳米催化剂 丙烯醇 催化加氢 

分 类 号：O643.36[理学—物理化学]