纳米复合固体超强酸催化α-蒎烯异构活性  

Isomerization Activity of α-Pinene Catalyzed by Nanometer Composite Solid Superacid

作　　者：吴春华[1] 赵黔榕[2] 毕韵梅[2] 

机构地区：[1]西南林学院木质科学与装饰工程学院,昆明650224 [2]云南师范大学化学化工学院,昆明650092

出　　处：《化学通报》2009年第11期1037-1040,共4页Chemistry

基　　金：国家自然科学基金项目(30700632);云南省自然科学基金项目(2006C0034Q)资助

摘　　要：用浸渍法以S2O28-为促进剂,制备得到尺寸为15～20nm的复合固体超强酸S2O28-/SnO2-TiO2,将其用于催化α-蒎烯异构化反应。考察了制备条件对其催化性能的影响,发现在Sn/Ti比2:1、S2O28-的浸渍浓度1.0mol/L和焙烧温度500℃条件下,所得纳米S2O82-/SnO2-TiO2具有最高的催化活性和选择性,α-蒎烯的转化率达98%,莰烯得率为62%。Nanometer composite solid superacid S2O8^2--/SnOE-TiO2 with witch granule of 15 - 20nm was prepared by impregnation with persulfate. It was used in isomerization reaction of a-pinene and the influence of preparation conditions on the catalyst performance was investigated. Under the suitable preparation condition, i. e. Sn/Ti mole ratio 2：1, S2O8^2- impregnation concentration l mol/L, and calcination temperature 500℃ the S2O8^2-/SnO2-TiO2 has highest activity and selectivity, and the conversion of α-pinene and the yield of camphene reach 98 % and 62%, respectively.

关 键 词：复合固体超强酸 过硫酸盐 纳米粒子 Α-蒎烯 催化异构 

分 类 号：O643.32[理学—物理化学]