Synthesis of a boron-containing zeolite with an MWW framework structure

    公开(公告)号:US10793443B2

    公开(公告)日:2020-10-06

    申请号:US16202918

    申请日:2018-11-28

    Applicant: BASF SE

    Abstract: The present invention relates to a process for the production of a boron-containing zeolitic material having an MWW framework structure comprising YO2 and B2O3, wherein Y stands for a tetravalent element, wherein said process comprises(a) providing a mixture comprising one or more sources for YO2, one or more sources for B2O3, one or more organotemplates, and seed crystals,(b) crystallizing the mixture obtained in (a) for obtaining a layered precursor of the boron-containing MWW-type zeolitic material,(c) calcining the layered precursor obtained in (b) for obtaining the boron-containing zeolitic material having an MWW framework structure,wherein the one or more organotemplates have the formula (I) R1R2R3N  (I) wherein R1 is (C5-C8)cycloalkyl, and wherein R2 and R3 are independently from each other H or alkyl, as well as to a synthetic boron-containing zeolite which is obtainable and/or obtained according to the inventive process as well as to its use.

    Solidothermal synthesis of zeolitic materials and zeolites obtained therefrom

    公开(公告)号:US10301185B2

    公开(公告)日:2019-05-28

    申请号:US15518945

    申请日:2015-10-15

    Applicant: BASF SE

    Abstract: The present invention relates to a process for the preparation of a zeolitic material comprising YO2 in its framework structure, wherein Y stands for a tetravalent element, wherein said process comprises the steps of: (1) providing a mixture comprising one or more sources for YO2, one or more fluoride containing compounds, and one or more structure directing agents; (2) crystallizing the mixture obtained in step (1) for obtaining a zeolitic material comprising YO2 in its framework structure; wherein the mixture provided in step (1) and crystallized in step (2) contains 35 wt.-% or less of H2O based on 100 wt.-% of YO2 contained in the mixture provided in step (1) and crystallized in step (2), as well as to a zeolitic material comprising YO2 in its framework structure obtainable and/or obtained according to said process, and to a zeolitic material per se comprising SiO2 in its framework structure, wherein in the 29Si MAS NMR spectrum of the as-synthesized zeolitic material the ratio of the total integration value of the peaks associated to Q3 signals to the total integration value of the peaks associated to Q4 signals is in the range of from 0:100 to 20:80, including the use of the aforementioned zeolitic materials.

    AN OXIDIC MATERIAL COMPRISING A ZEOLITE HAVING FRAMEWORK TYPE AEI

    公开(公告)号:US20220106192A1

    公开(公告)日:2022-04-07

    申请号:US17423590

    申请日:2020-01-21

    Applicant: BASF SE

    Abstract: A process for preparing an oxidic material comprising a zeolitic material having framework type AEI and a framework structure comprising a tetravalent element Y, a trivalent element X, and O, the process comprising preparing a synthesis mixture comprising water, a source of Y, a source of X comprising sodium, an AEI framework structure directing agent, and a source of sodium other than the source of X; and heating the synthesis mixture obtained from (i) to a temperature in the range of from 100 to 180° C. and keeping the synthesis mixture under autogenous pres-sure at a temperature in this range for a time in the range of at least 6 h, obtaining the oxidic material comprising a zeolitic material having framework type AEI and a framework structure comprising a tetravalent element Y, a trivalent element X, and O, comprised in its mother liquor; wherein the AEI framework structure directing agent according to (i) comprises a N, N-diethyl-2,6-dimethylpiperidinium cation.

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