Solid acid-base catalyst
    1.
    发明公开
    Solid acid-base catalyst 失效
    FesterSäure-Base-Katalysator

    公开(公告)号:EP0747123A2

    公开(公告)日:1996-12-11

    申请号:EP96304095.1

    申请日:1996-06-05

    IPC分类号: B01J23/22

    摘要: A solid acid-base catalyst contains vanadium pentoxide hydrate, preferably of the formula

            V 2 O 5 ·nH 2 O


    in which n has a value from 0.1 to 3, as confirmed by its X-ray diffraction spectrum shown in Fig. 1. This solid acid-base catalyst displays catalytic activity under mild conditions, and can be applied to the synthesis of olefins and ethers by alcohol dehydration, the synthesis of aldehydes and ketones by alcohol dehydrogenation, the hydration and isomerization of olefins, and alkylation, es terification, amidation, acetalization, amination, hydrogen shift, aldol condensation and polymerization.

    摘要翻译: 固体酸碱催化剂含有五氧化二钒水合物,优选式V2O5·nH2O,其中n为0.1〜3,如图1所示的X射线衍射光谱所证实。 该固体酸碱催化剂在温和条件下显示催化活性,可用于醇脱水合成烯烃和醚,通过醇脱氢合成醛和酮,烯烃的水合和异构化以及烷基化, 胺化,酰胺化,缩醛化,胺化,氢位移,醛醇缩合和聚合。

    Process for producing an oxide superconductor
    10.
    发明公开
    Process for producing an oxide superconductor 失效
    生产氧化物超导体的方法

    公开(公告)号:EP0450561A3

    公开(公告)日:1992-01-29

    申请号:EP91105173.8

    申请日:1991-04-02

    IPC分类号: H01L39/24

    摘要: The present invention provides a process for producing a superconducting material capable of elevating the Tc of oxide superconductors, in paticular Bi-based superconductors. The feature of the present invention resides in a process for producing an oxide superconductor, in which a intermediate product or a product showing superconducting property is treated with a solution containing a compound having a reducing or oxdising function. As the compound having a reducing function, compounds having two or more enolic hydroxy groups, cycloaliphatic polyhydric alcohol compounds or inorganic type reducing compounds are preferred. As the compound having oxidizing function, there can be mentioned, for example, carbonyl compounds, ozone, hydrogen peroxide, organic peroxide, dimethylsulfoxide and permanganate.