Synthesis of aluminosilicate zeolites of faujasite structure
    1.
    发明授权
    Synthesis of aluminosilicate zeolites of faujasite structure 失效
    合成结构的铝酸锌沸石

    公开(公告)号:US5192520A

    公开(公告)日:1993-03-09

    申请号:US689032

    申请日:1991-05-10

    IPC分类号: B01J29/08 C01B39/20

    摘要: An aluminosilicate gel containing an ST structuring agent whose composition is suitable for crystallization into a zeolite of the faujasite structural family is prepared. The gel then undergoes crystallization in order to form a zeolite precursor which consists of the zeolite containing the ST structuring agent in its cavities and channels, the zeolite being produced through the calcination of the precursor. The ST structuring agent consists of at least one compound from the alkylene polyoxides of formula (1) ##STR1## in which R and R', identical or different, each represents H or an alkyl radical in C.sub.1 to C.sub.4, X designates H or OH, m is equal to 2 or 3 and can differ from one pattern to another, and n is a number from 1 to 12. The zeolites thus obtained have a Si:Al ratio which is greater than 1 and which can go beyond 3, and show a cubic symmetry. The zeolites can be used, directly or after cation exchange, as adsorbants or as catalyst constituents.

    摘要翻译: PCT No.PCT / FR90 / 00599 Sec。 371日期1991年5月10日 102(e)日期1991年5月10日PCT提交1990年9月11日PCT公布。 出版物WO91 / 04226 日期:1991年04月4日。制备含有ST结构剂的铝硅酸盐凝胶,其组成适用于结晶化为八面沸石结构族的沸石。 然后,凝胶进行结晶以形成沸石前体,其由在其空腔和通道中含有ST结构化剂的沸石组成,沸石通过煅烧前体而产生。 ST结构剂由至少一种式(1)的亚烷基多氧化物(I)的化合物组成,其中R和R'相同或不同,分别表示H或C1至C4中的烷基,X表示 H或OH,m等于2或3,并且可以不同于一种图案,n为1至12的数。由此得到的沸石的Si:Al比大于1,可超过 3,并显示立方对称性。 沸石可以直接或在阳离子交换后用作吸附剂或催化剂成分。

    Production of silica-based MFI zeolites
    2.
    发明授权
    Production of silica-based MFI zeolites 失效
    生产基于二氧化硅的MFI沸石

    公开(公告)号:US5246688A

    公开(公告)日:1993-09-21

    申请号:US752015

    申请日:1991-08-29

    摘要: MFI zeolites based on silicon oxide and, optionally, the oxides of titanium, germanium, zirconium and/or tin, are produced by (1) heating an aqueous, homogeneous reaction mixture which comprises (a) an M.sub.2/n SiF.sub.6 complex (I), wherein M is a cation of valency n, optionally, at least one M.sub.2/n T'F.sub.6 complex (II), wherein T' is titanium, zirconium, germanium and/or tin, (b) a reagent providing OH. ions by hydrothermal decomposition and a structuring agent (c), e.g., a tertiary amine or a quaternary ammonium compound, whereby a zeolite precipitate is formed therein, and (2) separating and calcining such precipitate to eliminate structuring agent from the pores and channels of the resulting zeolite.

    摘要翻译: 通过(1)加热含水均匀的反应混合物制备基于氧化硅和任选的钛,锗,锆和/或锡的氧化物的MFI沸石,其包含(a)M2 / nSiF 6络合物(I), 其中M是价数n的阳离子,任选地至少一个M2 / nT'F6络合物(II),其中T'是钛,锆,锗和/或锡,(b)提供OH的试剂。 通过水热分解的离子和结构化剂(c),例如叔胺或季铵化合物,由此在其中形成沸石沉淀,和(2)分离和煅烧这样的沉淀物以从孔和通道中除去结构剂 得到的沸石。