[BMIM]BF_4中钌纳米催化剂的制备及催化α-蒎烯加氢反应  

Preparation of Ruthenium Nanoparticles Catalyst in [BMIM]BF_4 and Catalytic Hydrogenation of α-Pinene

作　　者：王小燕[1] 于世涛[2] 侯胜利[1] 陈祥云[1] 解从霞[1] 

机构地区：[1]青岛科技大学化学与分子工程学院,山东青岛266042 [2]青岛科技大学化工学院,山东青岛266042

出　　处：《林产化学与工业》2016年第6期81-86,共6页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(31270615)

摘　　要：RuCl_3·3H_2O与1-丁基-3-甲基咪唑四氟硼酸盐([BMIM]BF_4)物质的量比为100∶1,在60℃下常压搅拌2 h,再充入4.0 MPa H_2,40℃反应3 h,制得[BMIM]BF_4稳定的Ru纳米粒子催化剂;利用X射线衍射(XRD)和透射电镜(TEM)对催化剂进行了表征,结果表明:在[BMIM]BF_4中制备的Ru纳米粒子呈面心立方密堆积(ccp)结构,且Ru纳米粒子分布较均匀,其平均粒径为(2.5±0.6)nm。以水为反应介质,将该催化剂用于催化α-蒎烯加氢反应。在α-蒎烯与催化剂的物质的量比为400∶1、水用量4 mL、90℃、3.0 MPa氢气压力下反应1.5 h时,α-蒎烯的转化率即可达99%以上,其中顺式蒎烷的选择性为98.9%。The mixture of RuCl3· 3H2O and 1-butyl-3-methyl limidizaolium tetrafluoro-borate [ BMIM ] BF4 with the molar ratio of 100 ： 1 was stirred for 2 h at 60 ℃ and then the reactor was pressurized by 4.0 MPa H2 and placed in a 40℃ water bath with stirring for 3 h. Then, the ruthenium nanoparticles catalysts stabilized by [ BMIM ] BF4 were obtained. The catalysts were characterized by X-ray diffraction （ XRD ） and transmission electron microscopy （ TEM ）. The results indicated that the crystal structure of Ru nanoparticles prepared in [ BMIM ] BF4 was face-centered cubic stacking structure and the nanopartieles were uniformly distributed with the average diameter of （2.5 ±0.6） nm. The catalysts were applied in the hydrogenation of α-pinene with HzO as reaction medium. Under the suitable conditions of α-pinene/Ru molar ratio 400 ： 1,4 mL H2O, 90 ℃ , 3.0 MPa and 1.5 h, the conversion rate of α-pinene reached 99 % , and the selectivity of cis-pinane was 98.9%.

关 键 词：[BMIM]BF4 钌纳米粒子 Α-蒎烯 催化加氢 

分 类 号：TQ351.47[化学工程]