Abstract:
Zeolitic materials of the LEV-type structure and methods for their production are provided. The method for producing of the zeolitic material having an LEV-type structure comprising Y0 2 and optionally comprising X 2 O 3 comprises the steps of: (1) preparing a mixture comprising one or more sources for Y0 2 , one or more solvents, and optionally comprising seed crystals; and (2) crystallizing the mixture obtained in step (1), wherein Y is a tetravalent element, and X is a trivalent element, the mixture crystallized in step (2) contains 3 wt.-% or less of one or more metals M based on 100 wt-% of Y0 2 , even more preferably contains no metal M, wherein M stands for sodium or potassium.
Abstract:
The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material having a BEA framework structure comprising YO 2 and optionally comprising X 2 O 3 , wherein said process comprises the steps of (1) preparing a mixture comprising seed crystals and at least one source for YO 2 ; and (2) crystallizing the mixture; wherein Y is a tetravalent element, and X is a trivalent element, wherein the zeolitic material optionally comprises at least one alkali metal M, wherein when the BEA framework additionally comprises X 2 O 3 , the mixture according to step (1) comprises at least one source for X 2 O 3 , and wherein the seed crystals comprise zeolitic material having a BEA framework structure, preferably zeolite Beta.
Abstract:
The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material having a BEA framework structure comprising YO 2 and optionally comprising X 2 O 3 , wherein said process comprises the steps of (1) preparing a mixture comprising seed crystals and at least one source for YO 2 ; and (2) crystallizing the mixture; wherein Y is a tetravalent element, and X is a trivalent element, wherein the zeolitic material optionally comprises at least one alkali metal M, wherein when the BEA framework additionally comprises X 2 O 3 , the mixture according to step (1) comprises at least one source for X 2 O 3 , and wherein the seed crystals comprise zeolitic material having a BEA framework structure, preferably zeolite Beta.
Abstract translation:本发明涉及一种用于生产具有包含YO 2且任选地包含X 2 O 3的BEA骨架结构的沸石材料的无机模板合成方法,其中所述方法包括以下步骤:(1)制备包含晶种 和至少一个YO 2来源; 和(2)使混合物结晶; 其中Y是四价元素,X是三价元素,其中沸石材料任选地包含至少一种碱金属M,其中当BEA骨架另外包含X 2 O 3时,根据步骤(1)的混合物至少包含 一种X 2 O 3源,其中晶种包含具有BEA骨架结构的沸石材料,优选沸石β。
Abstract:
Zeolitic materials of the LEV-type structure and methods for their production are provided. The method for the production of the zeolitic material having an LEV-type structure comprising Y0 2 and optionally comprising X 2 O 3 comprises the steps of: (1) preparing a mixture comprising one or more sources for Y0 2 ,one or more solvents, and optionally comprising seed crystals; and (2) crystallizing the mixture obtained in step (1), wherein Y is a tetravalent element, and X is a trivalent element, the zeolitic material optionally comprises 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 sources for Y0 2 based on Y0 2 is 9.5 or less, and the crystallization temperatures is 175°C or higher in step (2), the duration of crystallization at those temperatures is less than 14 days. The zeolitic materials, preferably being obtainable or obtained according to the inventive method have an LEV-type framework structure comprising Y0 2 and X 2 0 3 , one or more alkali metals M and display an Y:X atomic ratio of from 1 to 9.4.
Abstract:
The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material having an LEV-type framework structure comprising YO 2 and optionally comprising X 2 O 3 , wherein said process comprises the steps of (1) preparing a mixture comprising seed crystals and one or more sources for YO 2 ; and (2) crystallizing the mixture obtained in step (1); wherein Y is a tetravalent element, and X is a trivalent element, wherein the zeolitic material optionally comprises one or more alkali metals M, and wherein the seed crystals comprise zeolitic material having an LEV-type framework structure, and to a zeolitic material having an LEV-type framework structure obtainable by said process, as well as to an organotemplate-free zeolitic material having an LEV-type framework structure comprising YO 2 and optionally comprising X 2 O 3 , wherein Y is a tetravalent element, and X is a trivalent element, wherein the zeolitic material optionally comprises one or more alkali metals M, wherein said zeolitic material is non-calcined.