SOLIDOTHERMAL SYNTHESIS OF A BORON-CONTAINING ZEOLITE WITH AN MWW FRAMEWORK STRUCTURE

    公开(公告)号:ZA201901970B

    公开(公告)日:2022-06-29

    申请号:ZA201901970

    申请日:2019-03-29

    Applicant: BASF SE

    Abstract: The present invention relates to a process for the production of a zeolitic material having an MWW framework structure comprising YO2 and B2O3, wherein Y stands for a tetravalent element, said process comprising(i) preparing a mixture comprising one or more sources for YO2, one or more sources for B2O3, one or more organotemplates, and seed crystals,(ii) crystallizing the mixture obtained in (i) for obtaining a layered precursor of the MWW framework structure,(iii) calcining the layered precursor obtained in (ii) for obtaining the 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, andwherein R2 and R3 are independently from each other H or alkyl, andwherein the mixture prepared in (i) and crystallized in (ii) contains 35 wt.-% or less of H2O based on 100 wt.-% of YO2 contained in the mixture prepared in (i) and crystallized in (ii), as well as to a synthetic boron-containing zeolite which is obtainable and/or obtained according to the inventive process and to its use.

    ISOMORPHOUSLY SUBSTITUTED SILICATE
    22.
    发明专利

    公开(公告)号:ZA201107112B

    公开(公告)日:2012-12-27

    申请号:ZA201107112

    申请日:2011-09-29

    Abstract: The present invention relates to a process for the preparation of an isomorphously substituted RUB-36 silicate comprising (1) providing a mixture containing silica, preferably amorphous silica, and/or at least one silica precursor, water, at least one suitable structure directing agent, (2) heating the mixture obtained according to (1) under hydrothermal conditions to give a suspension containing an RUB-36 silicate, (3) separating the RUB-36 silicate, wherein (a) either the mixture according to (1) contains at least one element suitable for isomorphous substitution and/or (b) the separated RUB-36 silicate according to (3) is subjected to isomorphous substitution.

    BIMENTAL-EXCHANGEDZEOLITE BETA FROM ORGANOTEMPLATE-FREE SYNTHESIS AND USETHEREOF IN THE SELECTIVE CATALYTIC REDUCTION OF NOx
    28.
    发明公开
    BIMENTAL-EXCHANGEDZEOLITE BETA FROM ORGANOTEMPLATE-FREE SYNTHESIS AND USETHEREOF IN THE SELECTIVE CATALYTIC REDUCTION OF NOx 审中-公开
    BIMETALL-AUSGETAUSCHTER ZEOLITH-BETA AUS ORGANOTEMPLATE-FREIER SYNTHESE UND VERWENDUNG DAVON IN DER SELKKTIVEN KATALYTISCHEN NOX-REDUKTION

    公开(公告)号:EP3097054A4

    公开(公告)日:2017-08-30

    申请号:EP14877063

    申请日:2014-12-30

    Abstract: The present invention relates to a process for the production of a zeolitic material having a BEA-type framework structure comprising YO2 and X2O3, wherein said process comprises the steps of (1) preparing a mixture comprising one or more sources for YO2 and one or more sources for X2O3; (2) crystallizing the mixture obtained in step (1); (3) subjecting the zeolitic material having a BEA-type framework structure obtained in step (2) to an ion-exchange procedure with Cu; and (4) subjecting the Cu ion-exchanged zeolitic material obtained in step (3) to an ion-exchange procedure with Fe; wherein Y is a tetravalent element, and X is a trivalent element, wherein the mixture provided in step (1) and crystallized in step (2) further comprises seed crystals comprising one or more zeolitic materials having a BEA-type framework structure, and wherein the mixture provided in step (1) and crystallized in step (2) does not contain an organotemplate as a structure-directing agent, as well as to the zeolitic material having a BEA frame work structure per se, and to its use, in particular in a method for the treatment of NOx by selective catalytic reduction (SCR).

    Abstract translation: 本发明涉及生产具有包含YO 2和X 2 O 3的BEA型骨架结构的沸石材料的方法,其中所述方法包括以下步骤:(1)制备包含一种或多种YO 2源和一种或多种 X2O3来源; (2)使步骤(1)中获得的混合物结晶; (3)使步骤(2)中获得的具有BEA型骨架结构的沸石材料与Cu进行离子交换程序; (4)将步骤(3)中获得的Cu离子交换沸石材料与Fe进行离子交换程序; 其中Y是四价元素,并且X是三价元素,其中步骤(1)中提供并在步骤(2)中结晶的混合物还包含含有一种或多种具有BEA型骨架结构的沸石材料的晶种,并且其中 在步骤(1)中提供并在步骤(2)中结晶的混合物不含有作为结构导向剂的有机模板以及具有BEA框架结构本身的沸石材料,特别是其用途 在通过选择性催化还原(SCR)处理NOx的方法中。

Patent Agency Ranking