Progress in the synthesis of SAPO-34 molecular sieve for the conversion of methanol to olefins

doi:10.16085/j.issn.1000-6613.2015.03.023

Abstract

Abstract: Latest researches on SAPO-34 molecular sieves in methanol to olefins reaction are introduced. It is found that the synthesis process of SAPO-34 molecular sieve can affect its crystallite size, acid strength and other physico-chemical properties, eventually its catalytic properties. The synthetic factors of SAPO-34 molecular sieve, such as the ratio of raw materials and their types, template, F-ions, which can affect its physico-chemical properties and catalytic performance in MTO reaction, are discussed in detail. Regarding the new technologies of SAPO-34 synthesis and catalytic performance optimization, the features and effects of metal-modified, ultrasonic or microwave assisted synthesis of SAPO-34 are reviewed. The trend for the development of SAPO-34 is to obtain higher olefin selectivity, longer life and lower cost by the discovery of new template and new technology for the modification or preparation of molecular sieves.

Key words: SAPO-34, molecular sieves, lower carbon olefin, methanol

摘要： 介绍了用于催化甲醇制烯烃的SAPO-34分子筛合成的研究近况。SAPO-34分子筛的合成过程是影响其晶粒尺寸、酸性强弱等物化性能的重要因素, 因而是影响其催化性能的关键因素。本文详细叙述了原料配比及其种类、模板剂、F^-等合成因素对SAPO-34分子筛物化性能及其MTO反应催化性能的影响。针对SAPO-34合成及其催化性能优化的新技术, 综述了SAPO-34分子筛的金属改性及其超声波、微波辅助合成的特点和效果, 指出通过研发新的模板剂及其助剂、改性或制备新工艺进而改善分子筛的酸性、提高其烯烃选择性、延长催化反应寿命、降低合成成本是SAPO-34今后研发的重要方向。

关键词: SAPO-34, 分子筛, 低碳烯烃, 甲醇

CLC Number:

TE624

DAI Yueli, WANG Lei, LIU Deyang. Progress in the synthesis of SAPO-34 molecular sieve for the conversion of methanol to olefins[J]. Chemical Industry and Engineering Progree, 2015, 34(3): 731-737.

代跃利, 王磊, 刘德阳. 用于催化甲醇制烯烃的SAPO-34分子筛合成的研究进展[J]. 化工进展, 2015, 34(3): 731-737.

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