Patent ID: 9028795
Filing Date: 2015-05-12
Classification: C01B

Abstract:
1. An organotemplate-free synthetic process for the production of a zeolitic material comprising YO 2 and X 2 O 3 , wherein said process comprises the steps of (1) preparing a mixture comprising seed crystals, one or more sources for YO (2) crystallizing the mixture obtained in step (1) to obtain a zeolitic material comprising YO wherein Y is a tetravalent element, and X is a trivalent element, wherein at least a portion of the mother liquor obtained in step (2) is recycled to step (1) as a source for YO 2 , optionally after concentration of the mother liquor, and wherein the ratio of the Y:X molar ratio of the mother liquor obtained in step (2) to the Y:X molar ratio of the one or more sources for YO 2 and the one or more sources for X 2 O 3 contained in the mixture obtained in step (1), which was crystallized in step (2), is 2 or greater.