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Crystals 2018, 8(2), 73; doi:10.3390/cryst8020073

Solvent-Free Synthesis of All Silica Beta Zeolite in the Presence of Tetraethylammonium Bromide

College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
Authors to whom correspondence should be addressed.
Received: 31 December 2017 / Revised: 27 January 2018 / Accepted: 30 January 2018 / Published: 1 February 2018
(This article belongs to the Special Issue Functional Multi-Scale Crystals)
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We report a solvent-free synthesis of all silica Beta zeolite using a cheap organic template of tetraethylammonium bromide (TEABr). The method includes mixing, grinding and heating solid raw material in the absence of water solvent but the presence of zeolite seeds. The absence of water solvent significantly improves the efficiency of synthesis, while the addition of seeds remarkably enhances the crystallization rate. In addition, the use of a cheap organic template of TEABr greatly decreases the synthesis cost. The effects of the reaction compositions, including the molar ratios of NH4F/SiO2, TEABr/SiO2, and mass ratios of seeds to the silica, on the synthesis of the pure product were investigated using different temperature. Physicochemical characterizations, including XRD, SEM, TG and N2 sorption, show that the zeolitic product has good crystallinity, uniform crystals, and high surface area. View Full-Text
Keywords: zeolite; all silica Beta; solvent-free synthesis; tetraethylammonium bromide; cheap zeolite; all silica Beta; solvent-free synthesis; tetraethylammonium bromide; cheap

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Cui, Y.; Yan, Z.; Li, M.; Zhu, J.; Zhu, L.; Yao, H.; Cao, X. Solvent-Free Synthesis of All Silica Beta Zeolite in the Presence of Tetraethylammonium Bromide. Crystals 2018, 8, 73.

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