化工进展

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甲醇制烯烃用ZSM-5分子筛的研究进展

潘红艳1,田敏1,何志艳1,花开慧2,林倩3   

  1. 1贵州大学化学与化工学院,贵州 贵阳 550025;2贵州省产品质量监督检验院,贵州 贵阳 550002; 3贵州省绿色化工与清洁能源技术重点实验室,贵州 贵阳 550025
  • 出版日期:2014-10-05 发布日期:2014-10-05

Advances in research on modified ZSM-5 molecular sieves for conversion of methanol to olefins

PAN Hongyan1,TIAN Min1,HE Zhiyan1,HUA Kaihui2,LIN Qian3   

  1. 1School of Chemical Engineering,Guizhou University,Guiyang 550025,Guizhou,China;2Institution of Supervision and Inspection Product Quality of Guizhou Province,Guiyang 550002,Guizhou,China;3Key Laboratory of Guizhou Province for Green Chemical Industry and Clean Energy Technology,Guiyang 550025,Guizhou,China
  • Online:2014-10-05 Published:2014-10-05

摘要: 综述了甲醇制烯烃用ZSM-5分子筛催化剂的研究进展,包括甲醇制低碳烯烃的合成机理、ZSM-5分子筛的结构与酸性对合成低碳烯烃性能的影响以及分子筛的改性。重点探讨了ZSM-5分子筛的改性(如水热处理改性、磷改性、氟改性、硼改性、金属离子改性及其他化学改性)对催化剂表面酸性和孔径、低碳烯烃选择性和催化剂稳定性的影响,指出分子筛孔径/表面酸性的调控和MTO/MTP反应机理的研究是甲醇制低碳烯烃催化剂研究的发展方向。

关键词: ZSM-5分子筛, 改性, 甲醇, 低碳烯烃

Abstract: This paper summarizes the recent developments of methanol-to-olefin (MTO/MTP) conversion over ZSM-5 molecular sieves,including synthesis mechanism of MTO/MTP,influence of pore structure and surface acid of ZSM-5 on its catalytic activity for MTO/MTP conversion,as well as modification of molecular sieve. The review focuses on the effect of modification of molecular sieve on pore size and surface acidity of catalyst,selectivity of light olefins,as well as stability of catalyst. The modification methods include hydrothermal treatment,phosphorus,fluorine,boron,metal ions,and other chemical modification. Regulation of surface acid and pore size of catalyst,and MTO/MTP reaction mechanism are research directions in the future for the synthesis of olefins from methanol.

Key words: ZSM-5 moleclar sieves, modification, methanol, light olefins

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