Preparation of para-xylene by toluene methylation
    1.
    发明授权
    Preparation of para-xylene by toluene methylation 失效
    通过甲苯甲基化制备对二甲苯

    公开(公告)号:US4935574A

    公开(公告)日:1990-06-19

    申请号:US325612

    申请日:1989-03-13

    IPC分类号: B01J21/08 B01J21/12

    CPC分类号: B01J21/12 B01J21/08

    摘要: A silica catalyst that retains its high initial activity for a longer time is obtained by forming the catalyst from an aquasol that was obtained by mixing an alkali metal aluminate with an aqueous solution of alkali metal silicate.

    摘要翻译: 通过将碱金属铝酸盐与碱金属硅酸盐水溶液混合而得到的水溶胶形成催化剂,可获得保持较长时间的高起始活性的二氧化硅催化剂。

    PROCESS FOR PRODUCING GUERBET ALCOHOLS USING WATER TOLERANT BASIC CATALYSTS
    4.
    发明申请
    PROCESS FOR PRODUCING GUERBET ALCOHOLS USING WATER TOLERANT BASIC CATALYSTS 有权
    使用耐水碱性催化剂生产酒精饮料的方法

    公开(公告)号:US20100160693A1

    公开(公告)日:2010-06-24

    申请号:US12642954

    申请日:2009-12-21

    IPC分类号: C07C27/08

    CPC分类号: C07C29/34 C07C31/08

    摘要: A process is provided for making a reaction product comprising 1-butanol by contacting a reactant comprising ethanol containing a significant amount of water with a decomposed hydrotalcite catalyst. The catalyst may be 1) hydrotalcites which have been thermally decomposed, either partially or fully, to form catalytically active species; 2) combinations of hydrotalcites (optionally containing transition metals) and metal carbonates; and 3) hydrotalcites (optionally containing transition metals) surface-impregnated with a transition metal nitrate, where catalysts 2) and 3) have also been thermally decomposed, either partially or fully, to form catalytically active species. The catalyst, at a selected reaction time, has greater activity when the ethanol contains water as compared to when the ethanol is anhydrous.

    摘要翻译: 提供了通过使包含大量水的乙醇的反应物与分解的水滑石催化剂接触来制备包含1-丁醇的反应产物的方法。 催化剂可以是1)部分或完全热分解以形成催化活性物质的水滑石; 2)水滑石(任选地含有过渡金属)和金属碳酸盐的组合; 和3)表面浸渍有过渡金属硝酸盐的水滑石(任选地含有过渡金属),其中催化剂2)和3)也被部分或全部热分解以形成催化活性物质。 与乙醇为无水相比,当乙醇含有水时,催化剂在选定的反应时间具有更大的活性。