Research Progress of Pervaporation NaA Molecular Sieve Membrane and Its Industrial Application
Among the new chemical separation technologies,pervaporation membrane separation tech-nology is a new type of membrane separation technology,which is widely used in food,medicine,electronics,new energy and other fields.As an inorganic multi-dimensional cage material,NaA molecular sieve has be-come an important precursor species for the large-scale preparation and production of pervaporation molecu-lar sieve membranes due to its efficient selective adsorption and excellent and uniform three-dimensional crystal plane structure.The crystallization of NaA zeolite on the surface of inorganic carrier materials by sol-gel method and hydrothermal synthesis method to form high-performance zeolite membrane materials has be-come an important way to prepare permeation vaporized zeolite membranes and an important prerequisite for large-scale industrial application.In this paper,the synthesis reaction mechanism of pervaporated zeolites is summarized,and the influencing factors in the preparation of high-performance pervaporated NaA zeolites,the research progress and industrial application status of pervaporated zeolites are described.