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Zeolite membranes: separations based on specific molecular interactions

The removal of process water from an organic product stream is one of the most frequently encountered unit operations in the process industry. Membrane separation processes such as pervaporation and vapor permeation can perform such operations in a very energy efficient manner. Zeolites are microporous crystalline aluminosilicates which have uniform, molecular-sized pores. Zeolites can be used as membrane material to separate gaseous or liquid mixtures based on difference in molecular size and/or adsorption and diffusion properties.