Zeolites have been extensively studied for years in different areas of chemical industry, such as shape selective catalysis, ion-exchange, and gas adsorption and separation. Generally, zeolites are prepared from solvothermal synthesis in the presence of a large amounts of solvents such as water and alcohols in sealed autoclaves under autogenous pressure. Water has been regarded as essential to synthesize zeolites for fast mass transfer of reactants, but it occupies a large space in autoclaves, which greatly reduces the yield of zeolite products. Furthermore, polluted wastes and relatively high pressure due to the presence of water solvent in the synthesis also leads to environmental and safety issues. Recently, inspired by great benefits of solvent-free synthesis, including the environmental concerns, energy consumption, safety, and economic cost, researchers continually challenge the rationale of the solvent and reconsider the age-old question “Do we actually need solvents at all in zeolite synthesis?”

中文翻译：

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沸石的无溶剂合成：机理和实用性

多年来，在化学工业的不同领域中对沸石进行了广泛的研究，例如形状选择催化，离子交换以及气体吸附和分离。通常，在自生压力下，在密封的高压釜中，在大量溶剂如水和醇的存在下，由溶剂热合成制备沸石。水已经被认为是合成沸石以快速转移反应物所必需的，但是水在高压釜中占据很大的空间，这大大降低了沸石产品的产率。此外，由于在合成中存在水溶剂而造成的污染废物和相对较高的压力也导致环境和安全问题。最近，受无溶剂合成的巨大好处（包括环境问题，能源消耗，安全性和经济成本）的启发，