催化甘油脱水氧化连串反应制丙烯酸  

Catalytic Oxidehydration of Glycerol to Acrylic Acid

作　　者：花东龙 庄晓煜 童东绅[1] 俞卫华[1] 周春晖[1,2] 

机构地区：[1]浙江工业大学化学工程学院催化新材料研究所,杭州310014 [2]南昆士兰大学农业和环境研究所

出　　处：《化学进展》2016年第2期375-390,共16页Progress in Chemistry

基　　金：国家自然科学基金项目(No.21373185);浙江省自然科学基金杰出青年项目(No.R4100436)资助~~

摘　　要：本文综述了近年来单反应器中甘油脱水氧化连串反应制备丙烯酸的研究进展。文中简介了甘油来源及丙烯酸的需求背景;概括了当前对单反应器中的催化体系、反应温度、接触时间、氧气分压及甘油浓度等的研究状况;重点讨论了单、双床层气固相体系中复合氧化物型催化剂和分子筛负载型催化剂的催化性能及其影响因素,涉及的催化剂有V-P、Fe-P、W-V、Mo-V、CsPW-Nb、VMo-SiC等复合氧化物和V_2O_5/BEA、V_2O_5/MFI分子筛负载型催化剂等;总结了当前研究对气固相催化反应机理和可能发生的副反应的认识;评述了催化剂的失活现象与再生问题;此外,还讨论了液固相体系中Cu/SiO_2-MnO_2和POM/Al_2O_3催化剂的催化特点及反应机理。最后分析了单反应器中甘油脱水氧化连续反应制丙烯酸反应过程尚存的难题,从反应体系的选取、催化剂性能的改进以及催化剂积炭消除等方面展望了可能的解决途径和方向。This article deals with the recent research and development on catalytic oxidehydration of glycerol into acrylic acid in a single reactor. The biorenew able glycerol as a platform chemical for the production of acrylic acid is introduced. The reaction parameters such as temperature,contact time,partial pressure of oxygen and glycerol concentration in the gas-solid systems and the liquid-solid systems are examined. The catalytic performances of oxide composites and molecular sieve-supported catalysts in a single-bed system and a doublebed gas-solid system are discussed. The catalysts include V-P,Fe-P,W-V,Mo-V,Cs PW-Nb,VMo-SiC oxide composites,V2O5/ BEA and V2O5/MFI. The postulated reaction mechanisms and probable side reactions in the gas-solid system are presented,followed by the discussion on the issues of catalyst deactivation and regeneration.Then the catalytic characteristics of Cu/SiO2-MnO2 and POM/Al2O3 catalysts and the reaction mechanism in the liquid-solid system are remarked. The problems and the prospects in the selection of catalytic system,the improvement of catalysts and the elimination of coking of catalysts are commented.

关 键 词：甘油 催化剂 脱水反应 氧化反应 丙烯酸 反应机理 

分 类 号：O643.3[理学—物理化学] O621.25[理学—化学]