摘要
分子筛膜因其独特的吸附性能、规整孔道及择形性和优异的酸催化活性,在石油化工领域有着广阔的应用前景。简述了分子筛膜的结构与合成方法,指出未来研究的方向是降低合成成本、以及通过新型合成方法制备具有高渗透性能的分子筛膜材料。介绍了分子筛膜及膜反应器在石油化工原料与产品分离提纯(包括天然气中CO2及水蒸气分离、H2净化和醇类脱水)以及催化反应(包括酯化与酯交换反应、合成醚反应、CO2加氢制甲醇、脱氢反应和合成对二甲苯等)中应用的研究进展。目前分子筛膜已在醇类脱水领域实现20多年的工业应用,具有高渗透性、高择形性、化学稳定性和水热稳定性的分子筛膜反应器在接近工业条件下的H2分离及催化反应等过程中也表现出良好的实验结果。未来需进一步研究分子筛膜合成机理,加快工业规模膜组件制备技术的开发,以更好地推动石油化工高效可持续性发展。
Zeolite membranes have wide application prospects in petrochemical industry due to their unique adsorption properties, shape selectivity and excellent acid catalytic activity. In this review, the recent research progress in structure control and synthesis methods of zeolite membranes was introduced. It was pointed out that the future improvement should focus on reducing the cost of synthesis, and preparing new membrane materials with high permeability by new synthesis methods. The application of zeolite membranes and membrane reactors in separation of petrochemical raw materials and products, including CO2 or steam separation from natural gas, H2 purification, alcohol-water separation, and catalytic reactions, including esterification and transesterification, synthesis of ether, hydrogenation of CO2 to methanol, dehydrogenation, synthesis of p-xylene, etc. were reviewed. Zeolite membranes with high permeability, high selectivity, chemical stability and hydrothermal stability have been applied in industrial-scale alcohol-water separation. In the future, the synthesis mechanism of zeolite membranes should be further studied, and R&D of industrial scale membrane module preparation technology should be accelerated, so as to promote efficient and sustainable development of petrochemical industry.
作者
杨学萍
YANG Xueping(Shanghai Research Institute of Petrochemical Technology,SINOPEC,Shanghai 201208,China)
出处
《化学反应工程与工艺》
CAS
北大核心
2019年第1期73-86,共14页
Chemical Reaction Engineering and Technology
关键词
分子筛膜
石油化工
膜分离
膜催化
zeolite membrane
petrochemical industry
membrane separation
membrane catalysis
