石油化工2011，Vol.40Issue(1)：34-37,4.
硅铝胶老化温度对气相转移法合成MCM-22分子筛的影响
Effect of Aluminosilica Gel Aging Temperature on Synthesis of MCM-22 Molecular Sieves by Vapor-Phase Transfer
摘要
Abstract
MCM-22 molecular sieves were synthesized through vapor-phase transfer method (VPT) from hexamethylene imine and aluminosilica gels which were prepared from silicic acid and sodium metaaluminate. The aluminosilica gels were characterized by means of TG-DTG, 27 Al MAS NMR and 29Si MAS NMR. Effects of aging temperature of the aluminosilica gel on its structure and MCM-22 molecular sieve synthesis were investigated. The results showed that the aging temperature change affected the H2O content and the Si form in the aluminosilica gel, which could provide different structural units in the MCM-22 molecular sieve synthesis. When the aluminosilica gel aging temperature was 80 ℃, the H2O content was the maximum and the aluminosilica gel with diversity of the Si form was prepared, which was beneficial to the crystallization process in the MCM-22 molecular sieve synthesis.关键词
硅铝胶/老化温度/气相转移法/MCM-22分子筛Key words
aluminosilica gel/ aging temperature/ vapor-phase transfer method/ MCM-22 molecular sieve分类
化学化工引用本文复制引用
刘星生,李英霞..硅铝胶老化温度对气相转移法合成MCM-22分子筛的影响[J].石油化工,2011,40(1):34-37,4.基金项目
国家自然科学基金项目(20676011). （20676011）
