Production of silica-based MFI zeolites
    1.
    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。