Ni/TiO_2-Al_2O_3催化剂的制备及其在松节油催化加氢反应中的应用  

Preparation of Ni/TiO_2-Al_2O_3 Catalyst and Its Application in Catalyzing Hydrogenation of Turpentine

作　　者：韩欢[1,2] 蒋丽红[1] 王亚明[1] 黄太阳[1] 王红琴[1] 

机构地区：[1]昆明理工大学化学工程学院,云南昆明650500 [2]西安绿创电子科技有限公司,陕西西安710065

出　　处：《林产化学与工业》2016年第1期92-98,共7页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(U1202265);昆明理工大学分析测试基金(20140781)

摘　　要：以溶胶凝胶法制备Ti O_2-Al_2O_3复合载体,采用超声波辅助浸渍负载Ni制得Ni/Ti O_2-Al_2O_3催化剂,将其应用于松节油催化加氢反应,考察了催化剂制备条件及松节油催化加氢反应条件对催化加氢的影响。结果表明,复合载体中钛铝物质的量之比(钛铝比)值0.4、载体焙烧温度550℃、超声波功率280 W、硝酸镍浸渍液浓度0.5 mol/L和超声波辅助浸渍时间2 h的条件下,制备的催化剂Ni/Ti O_2-Al_2O_3催化性能最高。最佳的加氢反应条件为:反应时间140 min、反应压力4.5 MPa、反应温度150℃和催化剂用量为松节油质量的5%,该条件下原料中α-蒎烯转化率达97.27%,产物顺式蒎烷的选择性为96.15%,顺式蒎烷的得率为93.52%。Ti O2-Al2O3 composite carrier were prepared by sol-gel method,using ultrasound-assisted impregnation supporting Ni to prepare Ni / Ti O2-Al2O3 catalyst. The catalyst was used in the reaction of hydrogenation of turpentine. The suitable conditions of catalyst preparation and turpentine hydrogenation reactions were investigated. The results showed that the highest performance conditions for the preparation of Ni / Ti O2-Al2O3 catalyst were the Ti-Al molar ratio of composite carrier 0. 4,carrier calcination temperature 550 ℃,ultrasonic power 280 W,immersion solution concentration 0. 5 mol / L and ultrasonic time 2 h. The best conditions for hydrogenation reaction were time 140 min,pressure 4. 5 MPa,temperature 150 ℃,and the dosage of catalyst was equal to 5% of turpentine quality. Under these conditions,the conversion rate of α-pinene was 97. 27%,the selectivity of cispinane was 96. 15%,and the yield of cis-pinane was 93. 52%.

关 键 词：镍 超声波浸渍 松节油 顺式蒎烷 催化加氢 

分 类 号：TQ35[化学工程]