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Sustainable Synthesis of Pure Silica Zeolites from a Combined Strategy of Zeolite Seeding and Alcohol Filling
Author(s) -
Wu Qinming,
Zhu Longfeng,
Chu Yueying,
Liu Xiaolong,
Zhang Changsheng,
Zhang Juan,
Xu Hao,
Xu Jun,
Deng Feng,
Feng Zhaochi,
Meng Xiangju,
Xiao FengShou
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201906559
Subject(s) - zeolite , calcination , crystallization , seeding , chemical engineering , materials science , amorphous solid , alcohol , aluminosilicate , amorphous silica , chemistry , organic chemistry , catalysis , engineering , aerospace engineering
Currently, the synthesis of pure silica zeolites always requires the presence of organic structure‐directing agents (OSDAs), which direct the assembly pathway and ultimately fill the pore space. A sustainable route is now reported for synthesizing pure silica zeolites in the absence of OSDAs from a combined strategy of zeolite seeding and alcohol filling, where the zeolite seeds direct crystallization of zeolite crystals from amorphous silica, while the alcohol is served as pore filling in the zeolites. Very importantly, the alcohol could be fully washed out from zeolite pores by water at room temperature, which completely avoids calcination at high temperature for removal of OSDAs in the synthesis of pure silica zeolites.