α-蒎烯催化加氢催化剂制备及催化性能  

Preparation and catalytic performance of the catalyst for hydrogenation of α-pinene

作　　者：马庆丰[1] 李凝[1] 吕义浩[1] 刘伟[1] 

机构地区：[1]桂林理工大学化学与生物工程学院,广西桂林541004

出　　处：《工业催化》2010年第10期33-36,共4页Industrial Catalysis

基　　金：广西科学基金项目(桂科自0728217);广西科学技术与开发计划项目(桂科能0842003-36)

摘　　要：采用溶胶-凝胶法制备了Al_2O_3、ZrO_2和ZrO_2/Al_2O_3载体,采用浸渍法制备了NiO/Al_2O_3、NiO/ZrO_2和NiO/ZrO_2/Al_2O_3催化剂,采用H_2-TPR、NH_3-TPD和原位红外等技术对催化剂的还原性能、表面酸特性、α-蒎烯的吸附性及比表面积等进行了表征。结果表明,负载型ZrO_2/Al_2O_3复合载体与活性物种形成较强的相互作用,稳定活性中心,复合载体Ni催化剂表面酸强度介于Ni/ZrO_2和Ni/Al_2O_3之间,α-蒎烯能与Ni/ZrO_2/Al_2O_3催化剂形成适宜化学吸附态。在α-蒎烯加氢反应中,Ni/ZrO_2/Al_2O_3催化剂表现出较好的催化活性和选择性,α-蒎烯转化率为84%,蒎烷选择性为83%。NiO/AlEO3,NiO/ZrO2 and NiO/ZrOE/Al2O3 catalysts were prepared by impregnation method using AI203 ,ZrO2 and ZrO2/Al2O3 as the supports which were prepared by sol-gel method. Reduction performance, acid properties, adsorption properties of α-pinene and surface area of the catalysts were characterized by H2-TPR, NH3-TPD and in-suit FT-IR. The results showed that there was strong interac- tion between ZrO2/Al2O3 composite support and activated species of Ni, and ZrOE/Al2O3support made active centre stable ; acid intensity of NiO/ZrO2/Al2O3 situated between NiO/ZrO2 and NiO/Al2O3. Suitable chemical adsorption was formed between α-pinene and NiO/ZrO2/Al2O3 catalyst. NiO/ZrO2/Al2O3 catalyst for hydrogenation of α-pinene exhibited better catalytic activity and selectivity, α-Pinene conversion of 84% and the selectivity to pinane of 83% were attained.

关 键 词：催化化学 Α-蒎烯 蒎烷 催化加氢 

分 类 号：O643.36[理学—物理化学] TQ426.94[理学—化学]