| abstract |
The present invention is a method for producing a LEV-type framework structure zeolitic material comprising YO 2 and, if necessary, X 2 O 3 , the method comprising: (1) A step of producing a mixture containing one or more YO 2 sources and one or more solvents, and if necessary, containing seed crystals; (2) crystallizing the mixture obtained in step (1); Y is a tetravalent element, X is a trivalent element, If the zeolitic material is necessary, it contains one or more alkali metals M, The molar ratio of the total amount of the one or more solvents to the total amount of the one or more YO 2 sources (as YO 2 ) is 9.5 or less, A method in which the crystallization temperature in step (2) is 175 ° C. or higher and the crystallization time at these temperatures is less than 14 days; A zeolitic material, preferably a zeolitic material obtainable or obtainable by the process of the invention, This LEV-type framework structure zeolite-based material contains YO 2 and X 2 O 3 and, if necessary, one or more alkali metals M, and the Y: X atomic ratio is 1 to 9.4. |