填料式SO_4^(2-)/TiO_2-Al_2O_3-Al固体酸催化合成乙酸乙酯  

Catalytic synthesis of ethyl acetate by SO_4^(2-)/TiO_2-Al_2O_3-Al structured solid acid catalyst

作　　者：李书昌[1,2] 沈燕[2] 孙德[2] 杜长海[2] 

机构地区：[1]双辽市科技信息研究所,吉林双辽136400 [2]长春工业大学化工学院,吉林长春130012

出　　处：《化学工程师》2011年第12期17-20,共4页Chemical Engineer

摘　　要：采用阳极氧化铝模板法(AAO)制备了Al2O3-Al一体型多孔氧化铝载体,采用电沉积技术将TiO2沉积到氧化铝多孔的纳米孔道内,制备了催化精馏用拉西环填料式TiO2-Al2O3-Al复合载体,采用浸渍法制备了SO24-/TiO2-Al2O3-Al固体酸催化精馏元件,以乙酸乙酯的合成为模型反应考察了所制备固体酸催化剂的酯化活性。实验结果表明,适宜的工艺条件为:焙烧温度为450℃,焙烧时间为2h,原料配比(醇酸摩尔比)为1∶1,反应时间为2h,反应催化剂用量为2.0g。The structured Al2O3-Al carrier was prepared by anodic oxidation of high-purity aluminum foils,and electrodeposition technology was used to deposit TiO2 into the nanoporous of anodic alumina.SO42-/TiO2-Al2O3-All solid acid catalyst was prepared by impregnation method,and was used as catalyst to synthesize ethyl acetate from acetic acid and ethanol.The results showed that the optional preparation and reaction conditions were as follows： calcination temperature 450℃,calcination time 2h,molar ratio of ethanol and acetic acid 1∶1,reaction time 2h,catalyst amount was 2.0g.

关 键 词：SO42-/TiO2-Al2O3-Al固体酸催化剂 阳极氧化 乙酸乙酯 催化精馏 

分 类 号：TQ426.6[化学工程]