K_2CO_3/γ-Al_2O_3催化剂在棉籽油制备生物柴油中的应用  

Application of K_2CO_3/γ-Al_2O_3 in vegetable oil to biodiesel

作　　者：祁淑芳[1] 王振菊 邱书伟[1] Qi Shufang;Wang Zhenju;Qiu Shuwei(College of Petroleum and Chemical engineering,BaYin GuoLeng Technology College,Korla 841000,Xinjiang,China)

机构地区：[1]巴音郭楞职业技术学院石油化工学院,新疆库尔勒841000

出　　处：《工业催化》2018年第6期45-48,共4页Industrial Catalysis

基　　金：巴音郭楞职业技术学院科研课题项目(bykj2016n-21)

摘　　要：利用等体积浸渍法制备K_2CO_3/γ-Al_2O_3负载型固体碱催化剂,应用于棉籽油和甲醇酯交换反应制备生物柴油。对催化剂使用前的保存条件、水分、重复使用性能、游离脂肪酸影响以及失活和再生进行了分析。结果表明,固体催化剂K_2CO_3/γ-Al_2O_3具有较好的抗水性,酸度对催化剂影响明显,重复使用4次未经活化的催化剂,催化活性明显降低,催化剂应密封保存。K_2CO_3/γ-Al_2O_3负载型固体碱催化剂经济实惠且催化效果良好。K2CO3/γ-Al2O3 supported solid base catalyst was prepared by impregnation method and tested in ester exchange reaction of vegetable oil with methanol to biodiesel. Effects of conditions of pres- ervation, water, reusability, free fatty acids, deactivation and regeneration were investigated. Results showed that K2CO3/γ-Al2O3 had good water resistance. Free fatty acids significantly influenced catalyst performance. When reused without activation 4 times, catalytic activity decreased obviously. The catalyst shoule be sealed. K2CO3/γ-Al2O3was economical and catalytic performance was good.

关 键 词：催化剂工程 K2CO3/γ-Al2O3 稳定性 失活 再生 

分 类 号：TQ426.99[化学工程] TE665[石油与天然气工程—油气加工工程]