摘要
介孔沸石分子筛是一种含有丰富介孔的结晶沸石,它不同于介孔分子筛和微孔沸石的简单机械混合。它不仅具备微孔沸石高的热和水热稳定性、优异的选择性和活性,而且由于介孔的引入改善了其对大分子的吸附和扩散性能,逐渐成为多孔催化材料研究领域的热点。本文主要从模板法、后处理法和前驱体组装法等方法出发,介绍了介孔沸石分子筛最新的制备方法研究进展。通过对比不同制备方法的优缺点,指出各种方法的改进方向,以期寻求一种较优的合成策略,以满足现今催化领域日益苛刻的要求。
Mesoporous zeolite materials, which are defined as the crystalline zeolite materials containing a large amount of mesopores, are different from the simple mechanical mixture of microporous zeolites and mesoporous molecular sieves. It gradually becomes a hotspot in the field of porous catalytic materials because it not only has high heat and water thermal stability, significant shape selectivity and high activity, but also improves the adsorption and diffusion of large molecules due to the insertion of mesopores. On the basis of the synthesis methods including template method, post-processing method, precursor assembly method and so on, the research progress on the synthesis of mesoporous zeolite is introduced. By comparing the advantages and disadvantages of different preparation methods, the direction of the improvement of various methods is pointed out so as to seek a better synthetic strategy for meeting the ever more harsh requirements of catalysis today.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2014年第4期522-528,共7页
Progress in Chemistry
基金
国家自然科学基金委员会-中国石油天然气集团公司石油化工联合基金项目(No.U1362202)
中国石油天然气股份有限公司重大科技专项(No.10-01A-05-01-08)
山东省自然科学基金项目(No.ZR2011BQ014)
中央高校基本科研业务费专项资金(No.12CX04093A)资助~~
关键词
介孔沸石
模板法
后处理法
前驱体组装法
mesoporous zeolite
template method
post-processing method
precursor assembly method
