Ultrafast synthesis of *BEA zeolite without the aid of aging pretreatment
Ultrafast synthesis of *BEA zeolite without the aid of aging pretreatment
复制标题
无需老化预处理即可超快合成 *BEA 沸石
DOI：
10.1016/j.micromeso.2018.04.012
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发表时间：
2018
影响因子：
5.2
通讯作者：
Wakihara Toru
中科院分区：
文献类型：
--
作者：
Zhu Jie;Liu Zhendong;Sukenaga Sohei;Ando Mariko;Shibata Hiroyuki;Okubo Tatsuya;Wakihara Toru
本研究的重点是超快合成 * 沸石，这构成了最重要的工业沸石之一。通过仔细调整初始反应物混合物的组成，在210 °C下在10分钟内成功地合成了纯的α-β相。迄今为止，几种工业上重要的沸石的超快合成是借助于老化预处理，随后是高温水热处理来实现的。在这项研究中，我们首先证明了10分钟的合成 * 沸石采用有机结构导向剂（OSDA），没有任何老化过程。采用密封管式反应器并优化起始原料的化学组成是在短时间内获得纯相的关键。快速合成的 * 沸石具有与常规水热合成方法合成的那些沸石在结晶度和结晶体积方面相似的性质。并考察了各种工艺参数对晶种辅助晶化过程的影响。
The present study focuses on the ultrafast synthesis of *BEA zeolite, which constitutes one of the most industrially important zeolites. A pure *BEA phase was successfully synthesized within 10 min at 210 °C by carefully tuning the composition of the initial reactant mixture. To date, the ultrafast synthesis of several industrially important zeolites is achieved with the aid of aging pretreatment, followed by high temperature hydrothermal treatment. In this study, we first demonstrated the 10-min synthesis of *BEA zeolite employing organic structure-directing agents (OSDAs), without any aging process. The employment of sealed pipe reactor in conjunction with the optimization of chemical composition of starting materials are critical in obtaining pure *BEA phase in a short time. The fast-synthesized *BEA zeolite possesses properties that are similar to those synthesized by conventional hydrothermal synthesis methods in terms of crystallinity and micropore volume. A comprehensive investigation on the effects of various parameters on the seed-assisted crystallization of *BEA zeolite was also studied.