Thin-sheet zeolite membrane and methods for making the same

Liu, Wei

Title: Thin-sheet zeolite membrane and methods for making the same

Patent · Tue Mar 23 00:00:00 EDT 2021

OSTI ID:1805645

Liu, Wei

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° C. to about 120° C.

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Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830; AR0000138; AR0000372; FC36-04G098014

Assignee:: Battelle Memorial Institute (Richland, WA)

Patent Number(s):: 10,953,372

Application Number:: 16/272,885

OSTI ID:: 1805645

Resource Relation:: Patent File Date: 02/11/2019

Country of Publication:: United States

Language:: English

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