Patent ID: 7585490

Claim:
A method for synthesizing nanocrystalline zeolites, the method comprising: (a) contacting starting products that comprise a solvent, a silicon source, a cation base, an organic template, optionally an aluminum source, or any combination thereof; sufficient to produce a zeolite gel by hydrolysis; (b) heating the zeolite gel, at atmospheric pressure sufficient to produce a first batch of nano crystalline zeolite crystals and a first clear solution; (c) separating the first batch of nanocrystalline zeolite crystals from the first clear solution by centrifugation; (d) heating the first clear solution at atmospheric pressure, without addition of additional silicon source, organic template, optional aluminum source, or any combination thereof, sufficient to produce a second batch of zeolite crystals and second clear solution; (e) separating the second batch of nanocrystalline zeolite crystals from the second clear solution by centrifugation; wherein the nanocrystalline zeolite crystals have a size smaller than 100 nm, and (f) calcining the nanocrystalline zeolites to remove organic templates.