Pt/Al_2O_3-beta催化脂肪酸甲酯加氢脱氧制备第二代生物柴油  

Catalytic hydrodeoxygenation of fatty acid methyl esters over Pt/Al_2O_3-beta to produce second-generation biodiesel

作　　者：欧阳仟 姚静雯 黄进 杨妮 刘学军[1] Ouyang Qian;Yao Jingwen;Huang Jin;Yang Ni;Liu Xuejun(Zhejiang Province Key Laboratory of Biofuel Utilization Technology,Biodiesel Laboratory of China Petroleum and Chemical Industry Federation,School of Chemical Engineering,Zhejiang University of Technology,Hangzhou Zhejiang 310014,China;Changhai Biological Division,Zhejiang pharmaceutical Co.Ltd.,Shaoxing Zhejiang 312000,China)

机构地区：[1]浙江工业大学石油和化工行业生物柴油技术工程实验室浙江省生物燃料利用技术研究重点实验室化学工程学院,浙江杭州310014 [2]浙江医药股份有限公司昌海生物分公司,浙江绍兴312000

出　　处：《石油化工》2018年第9期929-935,共7页Petrochemical Technology

基　　金：国家自然科学基金项目(21406198);浙江省自然科学基金项目(LQ14B060003);浙江省海洋经济创新发展区域示范成果转化及产业化项目(2015-83)

摘　　要：采用混捏挤条和等体积浸渍法相结合的方法制备了Pt/Al_2O_3、Pt/beta与Pt/Al_2O_3-beta三种不同载体类型的贵金属催化剂,利用XRD,BET,SEM,NH_3-TPD,H_2-TPR等手段对制备的催化剂进行表征,考察了所制备催化剂在脂肪酸甲酯上的加氢脱氧效果,优化了催化剂催化加氢的工艺条件。实验结果表明,所制备的Pt/Al_2O_3-beta催化剂具有适宜的酸性强度及孔径分布,明显提高了目标产物的收率,降低了裂解率;催化剂催化脂肪酸甲酯加氢脱氧反应的优化条件为:350℃、2 MPa、氢油体积比1000、WHSV为0.5 h-1,在此条件下,脂肪酸甲酯转化率最高可达99.52%,目标产物收率最高为88.48%。Three kinds of noble metal catalysts with different types of carriers including Pt/Al2O3,Pt/beta and Pt/Al2O3-beta were prepared by a combination of kneading and equal volume impregnation method.The prepared catalysts were characterized by XRD,BET,SEM,NH3-TPD and H2-TPR techniques,and their catalytic performance in hydrodeoxygenation of fatty acid methyl esters(FAMEs)was investigated.In addition,the process conditions in catalytic hydrogenation over catalysts were optimized.The experiment results showed that the yield of the target product was obviously increased and the cracking rate was reduced by the prepared Pt/Al2O3-beta catalyst with suitable acid strength and pore size distribution.The optimized conditions for the hydrodeoxygenation of FAMEs over Pt/Al2O3-beta catalyst were as follows:350℃,2 MPa,volume ratio of hydrogen to oil 1 000,and WHSV 0.5 h-1.Under these conditions,the highest FAMEs conversion and the target product yield reached 99.52%and 88.48%,respectively.

关 键 词：Pt/Al2O3-beta 贵金属 加氢脱氧 第二代生物柴油 

分 类 号：TQ645[化学工程—精细化工]