马来酸二丁酯催化合成用新型催化剂的研究 |
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引用本文: | 陈明扬,储伟,黄成宏,张云. 马来酸二丁酯催化合成用新型催化剂的研究[J]. 天然气化工, 2003, 28(4): 52-55 |
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作者姓名: | 陈明扬 储伟 黄成宏 张云 |
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作者单位: | 四川大学化工学院,成都,610065 |
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基金项目: | 国家自然科学基金(2 990 3 0 1 1 ),973国家重点子课题资助 (G1 9990 2 2 40 1 ) |
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摘 要: | 液相法酯化合成马来酸二丁酯是典型的酸催化反应。本论文研制了系列γ Al2O3系、硅铝系催化剂,用于马来酸二丁酯的合成;考察了催化剂种类和制备工艺,以及反应工艺条件的影响。实验结果表明:以并加法制备的SiO2/Al2O3(x(Si)/x(Al)=1/1,沉淀pH值6 0)催化效果最好,在120℃、催化剂用量为1 0g、n(酸)/n(醇)=1/4下,反应3h,马来酸转化率达73 31%。
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关 键 词: | 马来酸二丁酯 催化剂制备 液相法 酯收率 反应工艺 |
文章编号: | 1001-9219(2003)04-52-04 |
修稿时间: | 2003-03-18 |
Research on New Catalysts of Esterification for Synthesis of Di-n-butyl Maleate |
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Abstract: | The liquid phase esterification to synthesize di n butyl maleate is typically acid catalyzed reaction In this work the γ Al2O3 and SiO2/Al2O3 catalysts were prepared for the reaction of liquid phase esterification of maleic acid to synthesize di n butyl maleate The experimental results indicated that the catalyst SiO2/Al2O3 which was made by coprecipitation (Si/Al=1/1, the precipitation pH=60) has the highest efficiency At the temperature of 120℃, mass of catalyst 10g (based on 01 mole maleic acid) and n(maleic acid):n(n butanol)=1:4, the conversion of maleic acid reached at 7331% after 3 hours reaction |
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Keywords: | di-n-butyl maleate catalyst preparation liquid-phase reaction ester yield reaction parameters |
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