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SO₄^2-/TiO₂固体超强酸薄膜化催化剂合成乙酸乙酯的研究

Synthesis of ethyl acetate over SO₄^2-/TiO₂ solid superacid membrane catalyst

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【Author】 PENG Shao-hong~(1,2),HUANG Yun-feng~2,ZHONG Li~1,ZHONG Bang-ke~3 (1.Faculty of Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong China;2.Guangzhou City Vocational College,Guangzhou 510405,Guangdong China;3.Department of Chemistry,Jinan University,Guangzhou 510632,Guangdong China)

【机构】华南理工大学化工学院；广州城市职业学院；暨南大学化学系广东广州510640；广东广州510405；广东广州510640；广东广州510632；

【摘要】以多孔钛片为支撑体,制备了SO42-/TiO2固体超强酸薄膜化催化剂。在膜催化器上,考察了薄膜化催化剂对乙醇和乙酸合成乙酸乙酯的催化性能。结果表明,薄膜化催化剂显著提高了催化活性;当n(乙醇)∶n(乙酸)=1.5∶1、原料流量3.0 mL.h-1和反应温度为110℃时,乙酸乙酯收率达94.8%;用后薄膜催化剂的处理很方便,催化剂再生后可重复使用,对环境无污染。更多还原

【Abstract】 A catalytic membrane,supported on porous titanium plate and composed of SO^2-₄/?TiO₂（solid） superacid,was prepared.Catalytic activity of the film for esterification of ethanol and acetic acid was tested in a catalytic membrane reactor.Ethyl acetate yield of 94.8% was obtained under 110 ℃,（n（ethanol）∶） n（acetic acid）=1.5 and feed flow rate =3.0 mL·h^-1.The membrane catalyst is convenient to regenerate and can be repeatedly used after calcination,without pollution to the environment.更多还原