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Methods for synthesizing microporous crystals and microporous crystal membranes

United States Patent

9,561,477
February 7, 2017
View the Complete Patent at the US Patent & Trademark Office
A method of making a microporous crystal material, comprising: a. forming a mixture comprising NaOH, water, and one or more of an aluminum source, a silicon source, and a phosphate source, whereupon the mixture forms a gel; b. heating the gel for a first time period, whereupon a first volume of water is removed from the gel and micoroporous crystal nuclei form, the nuclei having a framework; and c.(if a membrane is to be formed) applying the gel to a solid support seeded with microporous crystals having a framework that is the same as the framework of the nuclei; d. heating the gel for a second time period. during which a second volume of water is added to the gel; wherein the rate of addition of the second volume of water is between about 0.5 and about 2.0 fold the rate of removal of the first volume of water.
Dutta; Prabir (Worthington, OH), Severance; Michael (Columbus, OH), Sun; Chenhu (Columbus, OH)
Ohio State Innovation Foundation (Columbus, OH)
14/ 194,199
20140241981
February 28, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was partially made with government support under Grant No. DE-FE0007632 awarded by the United States Department of Energy. The government has certain rights in the invention.