【摘要】 以程序升温分解（ＴＰＤＥ）为主要研究手段，分析了β沸石中四乙基胺模板剂的热分解机理。结果表明，四乙基胺模板剂的热分解分四个阶段进行：第一阶段发生的是包藏于沸石孔道中的四乙基氢氧化胺（ＴＥＡＯＨ）的第一级Ｈｏｆｍａｎｎ降解反应；第二阶段是平衡骨架负电荷的四乙基胺离子（ＴＥＡ＋）的第一级Ｈｏｆｍａｎｎ降解反应以及第一阶段降解产物Ｅｔ３Ｎ再吸附后发生的连续不同级乙基取代胺的Ｈｏｆｍａｎｎ降解反应；第三阶段是前两阶段的降解产物再吸附后，再吸附产物的连续不同级乙基取代胺的Ｈｏｆｍａｎｎ降解反应；第四阶段是残留有机物的分解反应。更多还原

【Abstract】 The mechanism of the thermal decomposition of tetraethylammonium ion in zeolite β has been investigated mainly by using TPDE techniques. The results show that the complete decomposition of the template needed four steps: the TEAOH species occluded in zeolite β decomposed in the first step; the TEA cations balancing the framework negative charges decomposed in the second step; the amines readsorbed on the acidic sites of zeolite β decomposed into lighter amines by sequential Hofmann elimination reactions in the third step; the organic species produced on the acid sites decomposed in the fourth step.更多还原