Process for the production of 3-hydroxyalkanals
    6.
    发明授权
    Process for the production of 3-hydroxyalkanals 失效
    生产3-羟基卡那烯的方法

    公开(公告)号:US5276201A

    公开(公告)日:1994-01-04

    申请号:US981324

    申请日:1992-11-24

    摘要: A process for the production of 3-hydroxyalkanals, more particularly 3-hydroxypropionaldehyde, by hydration of the basic 2-alkenals, more particularly acrolein, in the presence of a solid catalyst containing acid functional groups. The catalysts are based on an inorganic support containing basic activity centers (which are at least partly occupied by a polybasic acid, of which the first pK.sub.s value is between 0 and 3, in a form in which it cannot be removed by water) enables the hydration to be carried out with high selectivity. At the same time, the disadvantages of known organic fixed-bed catalysts are avoided. Preferred catalyst are based on pyrogenic titanium dioxide with phosphoric acid fixed thereon.

    摘要翻译: 在含有酸官能团的固体催化剂存在下,通过碱性2-烯烃,更特别是丙烯醛的水合,制备3-羟基卡那烯,更特别是3-羟基丙醛的方法。 催化剂基于含有碱性活性中心的无机载体(其至少部分地被多元酸占据,其中第一pK值在0和3之间,其不能被水除去的形式)使得能够 水合以高选择性进行。 同时,避免了已知有机固定床催化剂的缺点。 优选的催化剂基于固定有磷酸的热解二氧化钛。

    Apparatus for the containment of monolithic catalysts
    9.
    发明授权
    Apparatus for the containment of monolithic catalysts 失效
    用于容纳整体式催化剂的装置

    公开(公告)号:US4859428A

    公开(公告)日:1989-08-22

    申请号:US7884

    申请日:1987-01-28

    IPC分类号: B01D53/86 F01N3/28

    摘要: A device for the support of ceramic catalyst monoliths especially of square cross section as well as for the combination of several of such monoliths into one package. It is formed of an elastic gasket attached on one or both monolith ends and a metal frame attached on the gasket under pressure. The frame has recesses on two adjacent lateral surfaces, and at the two opposite lateral surfaces it has projections which can engage interlockingly into the recesses of adjacent frames.

    摘要翻译: 用于支撑特别是方形横截面的陶瓷催化剂整料的装置,以及用于将一些这种整料组合成一个包装的装置。 它由一个或两个整体端部附接的弹性垫圈和在压力下连接在垫圈上的金属框架形成。 框架在两个相邻的侧表面上具有凹槽,并且在两个相对的侧表面处具有突起,该凸起可互锁地接合到相邻框架的凹部中。

    Method for the catalytic reforming of naphtha
    10.
    发明授权
    Method for the catalytic reforming of naphtha 失效
    石脑油催化重整方法

    公开(公告)号:US5496467A

    公开(公告)日:1996-03-05

    申请号:US413878

    申请日:1995-03-20

    CPC分类号: B01J23/40 C10G35/09 F02B1/04

    摘要: Catalytic reforming of C.sub.9 + containing naphtha with a high yield of BTX is disclosed. Naphtha is converted under customary reforming conditions on a catalyst which contains at least one platinum group metal at least one metal of the group IV B, and at least one halogen component on an oxidic carrier.

    摘要翻译: 公开了具有高产率的BTX的含C9 +石脑油的催化重整。 在常规重整条件下,石脑油在含有至少一种铂族金属的至少一种IVB族金属和氧化载体上的至少一种卤素组分的催化剂上转化。