Basf Se Corporation

Tokyo Institute of Technology

Meike Pfaff

Ulrich Müller

Bilge Yilmaz

Feng-Shou Xiao

Bin Xie

Haiyan Zhang

Dirk De Vos

Xinhe Bao

Hermann Gies

Weiping Zhang

Takashi Tatsumi

Hiroyuki Imai

Faruk Özkirim

Mike Haas

A process for the production of a zeolitic material having an LEV-type framework structure comprising YO2 and optionally comprising X203, wherein said process comprises preparing a mixture comprising one or more sources for YO2, one or more solvents, and optionally comprising seed crystals; and crystallizing the mixture; wherein Y is a tetravalent element, and X is a trivalent element, and wherein the crystallized mixture contains 0.1 wt.-% or less, more preferably 0.01 wt.-% or less of one or more metals M based on 100 wt.-% of YO2, wherein even more preferably the crystallized mixture contains no metal M, wherein M stands for sodium and/or potassium, wherein preferably M stands for the group of alkali and alkaline earth metals.

Alkali-free synthesis of zeolitic materials of the LEV-type structure

Described is an organotemplate-free synthetic process for the production of a zeolitic material having an LEV-type framework structure comprising YOand optionally comprising XO, wherein said process comprises: (1) preparing a mixture comprising seed crystals and one or more sources for YO; 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. Also described is a zeolitic material having an LEV-type framework structure obtainable by said process, as well as an organotemplate-free zeolitic material having an LEV-type framework structure comprising YOand optionally comprising XO, 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.

Organotemplate-free synthetic process for the production of a zeolitic material of the LEV-type structure

The present invention relates to an organotemplate-free synthetic process for the production of a zeolitic material comprising YOand XO, wherein said process comprises the steps of

Process for the organotemplate-free synthetic production of a zeolitic material using recycled mother liquor

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Neunkirchen, Germany

Meike Pfaff