石油化工高等学校学报

石油化工高等学校学报 ›› 2011, Vol. 24 ›› Issue (4): 29-33.DOI: 10.3696/j.issn.1006-396X.2011.04.008

• 化工机械 • 上一篇    下一篇

SiO2 负载磷钨酸催化苯甲醚与乙酸酐反应

陈平1,2,高肖汉1,翟玉春2   

  1. 1.辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001;2.东北大学材料与冶金学院,辽宁沈阳110006
  • 收稿日期:2011-07-19 修回日期:2011-08-02 出版日期:2011-08-25 发布日期:2011-08-25
  • 作者简介:陈平(1963 -), 女, 辽宁抚顺市, 教授, 硕士
  • 基金资助:
    国家自然科学青年基金资助项目(21003069)。

Reaction of Anisole With Acetic Anhydride Over SiO2  Supported Phosphotungstic Acid#br#

  1. 1．School of Chemistry and Material Science, Liaoning Shihua University, Fushun Liaoning 113001, P. R. China; 
     2．Material and Metallurgy College, Northeastern University, Shenyang Liaoning 110006, P. R. China
  • Received:2011-07-19 Revised:2011-08-02 Published:2011-08-25 Online:2011-08-25

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摘要： 负载杂多酸不但有利于催化剂的分离,而且可以使均相反应多相化。以SiO2 为载体,通过不同的负载方法制备SiO2 负载磷钨酸催化剂,将其用于催化苯甲醚和乙酸酐发生Friedel-Crafts酰基化反应,合成对甲氧基苯乙酮,研究了催化剂的焙烧温度和负载量对催化反应性能的影响。实验结果表明,在催化剂质量为1g、苯甲醚为0.1mol,苯甲醚与乙酸酐的物质的量比为1：1.5,采用吸附法,磷钨酸的负载量为40%,焙烧温度为150℃时,催化剂的催化性能最好,产品收率达68.5%;催化剂的回收实验证明,催化剂可以再生重复使用,但回收催化剂的活性与处理温度和回流时间有关。并对负载磷钨酸(HPW/SiO2 )进行了IR、XRD等表征。

关键词: 磷钨酸 ,  SiO2 , 苯甲醚 , 乙酸酐 , 酰基化反应

Abstract: Supported heteropolyacid is not only conveniently used to separate catalyst from reaction system,but also to heterogenize of the homogenous reaction.Different methods were used to prepare the supported heteropolyacid,which catalyze
anisole and acetic anhydride to synthesis p -acetylanisole.The effects of HPW amount and calcined temperature to the catalytic activity were studied.The results showed that catalysts exhibited the best catalytic performance and the product yield is 68.5%,using adsorption method,catalyst 1 g,anisole 1 mol,molar ratio of anisole and acetic anhydride1：1.5,loading 40% amount of HPW and calcining at 150 ℃.Experiments of catalysis recycle illuminate that the catalysis could be reused,whereas the catalytic activity was connected with treated temperature and circumfluence time.The supported heteropolyacid was charactered by infrared spectra (IR) and X-ray diffraction spectrum (XRD).

Key words: Phosphotungstic acid ,     SiO2 ,    , Anisole ,    , Acetic anhydride ,    , Acylation

引用本文

陈平,高肖汉,翟玉春. SiO2 负载磷钨酸催化苯甲醚与乙酸酐反应[J]. 石油化工高等学校学报, 2011, 24(4): 29-33.

CHEN Ping,GAO Xiao-han,ZHAI Yu-chun. Reaction of Anisole With Acetic Anhydride Over SiO2  Supported Phosphotungstic Acid#br# [J]. Journal of Petrochemical Universities, 2011, 24(4): 29-33.

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