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THIN-SHEET ZEOLITE MEMBRANE AND METHODS FOR MAKING THE SAME

United States Patent Application

20150265975
A1
View the Complete Application at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Zeolite membrane sheets for separation of mixtures containing water are provided, as well as methods for making the same. Thin, but robust, zeolite membrane sheets having an inter-grown zeolite crystal film directly on a thin, less than 200 micron thick, porous support sheet free of any surface pores with a size above 10 microns. The zeolite membrane film thickness is less than about 10 microns above the support surface and less than about 5 microns below the support surface. Methods of preparing the membrane are disclosed which include coating of the support sheet surface with a seed coating solution containing the parent zeolite crystals with mean particle sizes from about 0.5 to 2.0 microns at loading of 0.05-0.5 mg/cm2 and subsequent growth of the seeded sheet in a growth reactor loaded with a growth solution over a temperature range of about 45.degree. C. to about 120.degree. C.
Liu, Wei (Richland, WA), Li, Xiaohong Shari (Richland, WA), Canfield, Nathan L. (Richland, WA)
BATTELLE MEMORIAL INSTITUTE (Richland WA)
14/ 733,735
June 8, 2015
ACKNOWLEDGEMENT OF GOVERNMENT SUPPORT [0002] This invention was made with government support under Contract Nos. DE-AC0576RL01830, DE-AR0000138, DE-AR0000372, and DE-FC36-04GO98014 awarded by the U.S. Department of Energy. The government has certain rights in the invention.