化工进展

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空气(氧气)催化氧化合成草甘膦催化剂的研究进展

陈丹 1,2,李国儒3,黄敏建3,陈标华2,银凤翔1,3   

  1. 1北京化工大学有机无机复合材料国家重点实验室,北京 100029; 2北京化工大学化学工程学院,北京 100029;3北京化工大学常州先进材料研究院,江苏 常州 213164
  • 出版日期:2014-02-05 发布日期:2014-02-05

Research progress of catalysts for producing N-phosphonomethyl glycine by air (oxygen) catalytic oxidation

CHEN Dan1,2,LI Guoru3,HUANG Minjian3,CHEN Biaohua2,YIN Fengxiang1,3   

  1. 1State Key Laboratory of Organic-inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China;2School of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;3Changzhou Institute of Advanced Materials,Beijing University of Chemical Technology,Changzhou 213164,Jiangsu,China
  • Online:2014-02-05 Published:2014-02-05

摘要: 用于空气(氧气)催化氧化双甘膦合成草甘膦的催化剂主要有活性炭催化剂、贵金属催化剂和过渡金属催化剂。本文分别概述了这3种催化剂的研究进展,分析比较了这些催化剂的优点和缺点:活性炭催化剂成本低廉、制备简单但是套用次数少,副产甲醛含量高;贵金属催化剂不仅收率高、产品质量好,而且催化剂可多次套用,但是成本过高,制备和再生也困难;过渡金属催化剂属均相催化,催化剂和产物易分离,但是产品收率较低。最后结合国内现状,认为开发一种催化效果更优、生产成本更低廉、使用和再生简单且环境友好的催化剂是国内草甘膦生产企业亟待解决的问题。

关键词: 草甘膦, 双甘膦, 合成, 空气(氧气), 氧化, 催化剂

Abstract: There are mainly three kinds of catalysts used for producing N-phosphonomethyl glycine by air (oxygen) catalytic oxidation:activated carbon,noble metal and transition metal catalysts. The research progress of these catalysts and their relative merits for applications in N-phosphonomethyl glycine synthesis are summarized and analyzed in this paper. Activated carbon catalysts are low cost and can be simply prepared,but they possess short working life and leave too much formaldehyde as by-product. Noble metal catalysts have long operation life and the obtained product is high yield with good quality,but the catalysts are high cost and difficult to be prepared and regenerated. Transition metal catalysts belong to homogeneous catalysts and can be easily separated from products but with low yield. Hence,to address the domestic problems faced by glyphosate enterprises,catalysts,which are low cost,environmental friendly and easily prepared and regenerated,with high activities are urgently required.

Key words: glyphosate, N-phosphonomethyliminodiacetic acid, synthesis, air (oxygen) oxidation, catalyst

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