以2 μm和600 nm的T型沸石为晶种，采用二次生长法制备T型沸石膜，利用XRD和SEM对T型沸石膜的晶相结构、膜层形貌进行表征，并在348 K下将其用于渗透蒸发分离35 g/L氯化钠溶液。结果表明，在423 K下晶化反应4 h，T型沸石晶体交互生长形成致密的T型沸石膜，膜层厚度约4 μm，渗透蒸发脱盐测试渗透通量可以稳定在7.5 kg/（m²·h），离子截留率大于99.9%；制备的T型沸石膜渗透蒸发脱盐性能优异，有重要的海水脱盐工业应用价值。

Zeolite-T membrane is prepared through a secondary growth method with different sizes (2 μm and 600 nm) of zeolite-T as crystal seed.The crystal phase structure and surface morphology of the fabricated zeolite-T membrane are characterized by XRD and SEM.The zeolite-T membrane is used to separate 35 g·L^-1 NaCl solution through pervaporation at 348 K.It is found that the dense membranes with an approximate thickness of 4 μm is formed through interactive growth of zeolite-T crystals at 423 K in 4 h.As these membranes are further applied to explore pervaporation desalination of 35 g·L^-1 NaCl solution at 348 K,the water flux can remain stable at 7.5 kg/(m²·h) and the rejection rate of ions can exceed 99.9%.It is demonstrated that the fabricated membrane has excellent performance in pervaporation and desalination,with high industrial application value in desalination of sea water.

付文敬(1997-),男,硕士研究生,研究方向为无机沸石膜的制备与应用,fwjdut@163.com;鲁金明(1972-),男,硕士,副教授,研究方向为膜分离与吸附分离,通讯联系人,ljinming@dlut.edu.cn。