제올라이트성 촉매의 제조 방법
    4.
    发明公开
    제올라이트성 촉매의 제조 방법 有权
    制备沸石催化剂的方法

    公开(公告)号:KR1020010062071A

    公开(公告)日:2001-07-07

    申请号:KR1020000072514

    申请日:2000-12-01

    Abstract: PURPOSE: A process for producing a zeolite catalyst containing zeolite and oligomeric silica which can be used in industrial reactors is provided. CONSTITUTION: The process for the preparation of zeolitic catalysts based on the rapid drying of an aqueous dispersion comprising crystalline zeolite, oligomeric silica and tetra-alkylammonium hydroxide, is characterized in that the aqueous dispersion is prepared by directly mixing the suspension resulting from the synthesis of the zeolite with an oligomeric silica sol obtained from the hydrolysis of a tetra-alkyl ortho silicate in the presence of tetra-alkylammonium hydroxide.

    Abstract translation: 目的:提供可用于工业反应器中的含有沸石和低聚二氧化硅的沸石催化剂的制备方法。 构成:基于快速干燥包含结晶沸石,低聚二氧化硅和四烷基氢氧化铵的水性分散体制备沸石催化剂的方法的特征在于,水分散体通过直接混合由合成 在四烷基氢氧化铵存在下,由四烷基原硅酸盐水解获得的具有低聚二氧化硅溶胶的沸石。

    MFI형 제올라이트를 기재로 한 촉매, 이의 제조 방법 및 이를 이용한 촉매적 전위반응 방법
    6.
    发明公开

    公开(公告)号:KR1020000035163A

    公开(公告)日:2000-06-26

    申请号:KR1019990048161

    申请日:1999-11-02

    Abstract: PURPOSE: An MFI-type zeolite based catalyst and its preparation method are provided, which catalyst is useful for the transformation of oximes into amides. CONSTITUTION: The MFI-type zeolite based catalyst is prepared by: preparing silicate oligomer by hydrolyzing silicon alkoxide; mixing the oligomer with an aqueous or aqueous alcoholic dispersion solution of sub micro particles of MFI-type zeolite which is acidified to pH below 5; emulsifying the aqueous or aqueous alcoholic ligand/zeolite mixture in an organic solvent; contacting the emulsion with a basic solution to bind the dispersed micro drops; and washing calcining the obtained micro sphere. Preferably the MFI-type zeolite is selected from the zeolite whose mole ratio of Si/Al (or Si/B, Si/Ga, Si/In, or Si/Ti) is more than 1,000, and silicalite-1. The MFI-type zeolite based catalyst is such that the silicate ligand represented by SiO2 is more than 30 wt%, the outer surface area is 60-80 square meter per gram, the specific volumes of micro pore and mesopore are 0.2-0.3 ml/g and 0.1-0.4 ml/g, respectively, the bulk density is 0.7-0.85 g/ml, and the Davison index is less than 6.

    Abstract translation: 目的:提供一种MFI型沸石基催化剂及其制备方法,该催化剂可用于将肟转化为酰胺。 构成:MFI型沸石基催化剂通过以下步骤制备:通过水解硅醇盐制备硅酸盐低聚物; 将低聚物与酸化至pH低于5的MFI型沸石的亚微米颗粒的水性或水性醇分散液混合; 在有机溶剂中乳化水性或水性醇配体/沸石混合物; 使所述乳液与碱性溶液接触以结合分散的微滴; 并洗涤煅烧所获得的微球。 优选地,MFI型沸石选自Si / Al(或Si / B,Si / Ga,Si / In或Si / Ti)的摩尔比大于1000且硅沸石-1的沸石。 MFI型沸石基催化剂使得由SiO 2表示的硅酸盐配体大于30重量%,外表面积为60-80平方米/克,微孔和中孔的比体积为0.2-0.3毫升/ g和0.1-0.4ml / g,堆积密度为0.7-0.85g / ml,Davison指数小于6。

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