中文摘要：

采用微乳液法制备高比表面积、簇状多片层载体Al2O3,利用浸渍法获得Ti（SO4）2/Al2O3固体酸催化剂。采用SEM、EDS、XRD、TG-DTG和N2吸附脱附等手段对固体酸Ti（SO4）2/Al2O3进行了表征和分析。同时,考察固体酸Ti（SO4）2/Al2O3对油酸与甲醇酯化反应的催化活性。结果表明：固体酸Ti（SO4）2/Al2O3具有较高的催化活性;当甲醇与油酸摩尔比8∶1、反应时间6 h、反应温度140℃、催化剂用量7%（占油酸质量）时,油酸转化率可达93.5%;无水乙醇洗涤可防止催化剂颗粒团聚,经无水乙醇洗涤后催化剂循环使用性能表现良好。

英文摘要：

High specific surface area Al2O3 with areatus multiple layers was prepared by micmemulsion method.Solid acid Ti （SO4） 2/Al2O3 was obtained by impregnation method.Solid acid Ti （SO4） 2/Al2O3 was characterized and analyzed via field emission scanning electron microscopy （SEM）,energ.y dispersive spectmmeter（EDS）,X-ray diffraction（XRD）,thermal gravity analysis（TG-DTG） and N2 adsorption desorption.The catalytic activity of Ti （SO4）2/Al2O3 was examined as catalyst in the production of biodiesel from oleic acid with methanol.The results showed that solid acid Ti （SO4）2/Al2O3 had higher catalytic activity.Under the conditions of molar ratio of methanol to oleic acid 8∶ 1,reaction time 6 h,reaction temperature 140℃,and catalyst dosage 7% （based on the mass of oleic acid）,the conversion rate of oleic acid reached 93.5%.The agglomeration of catalyst particles could be prevented by anhydrous alcohol washing and solid acid Ti（SO4）2/Al2O3 washed by anhydrous alcohol showed good recycling performance.