Preparation of propanediols using a copper-and zinc containing
hydrogenation catalyst
    4.
    发明授权
    Preparation of propanediols using a copper-and zinc containing hydrogenation catalyst 失效
    使用含铜和锌的氢化催化剂制备丙二醇

    公开(公告)号:US4393251A

    公开(公告)日:1983-07-12

    申请号:US347380

    申请日:1982-02-10

    摘要: Hydrogenation catalysts which are prepared from mixed crystals of copper-zinc compounds, obtained by precipitation, of the formulaCu.sub.1.5-3 Zn.sub.1-2.5 (CO.sub.3).sub.1-2 (OH).sub.4-6.(H.sub.2 O).sub.0-1by decomposition at 200.degree.-500.degree. C., and are used for the catalytic preparation of propanediols of the formula ##STR1## where the R's may be identical or different and each is an aliphatic, araliphatic or aromatic radical, or the two R's together with the adjacent carbon atom are members of an alicyclic ring, by hydrogenating hydroxypropionaldehydes of the formula ##STR2## where R has the above meanings, and to processes for the preparation of propanediols, using such catalysts. The propane-1,3-diols obtainable by the novel process are valuable starting materials for the preparation of lubricants, plastics, surface coatings and synthetic resins, for example of polyesters derived from the propanediols.

    摘要翻译: 由通过沉淀得到的铜 - 锌化合物的混合晶体制备的氢化催化剂,其通式为Cu1.5-3Zn1-2.5(CO3)1-2(OH)4-6。(H2O) 200℃-500℃,并用于催化制备式(I)的丙二醇,其中R可以相同或不同,并且各自为脂族,芳脂族或芳族基团,或两个R与 相邻的碳原子是脂环的成员,通过氢化具有上述含义的式II的羟基丙醛,以及使用这种催化剂制备丙二醇的方法。 通过新方法获得的丙烷-1,3-二醇是用于制备润滑剂,塑料,表面涂层和合成树脂的有价值的起始材料,例如衍生自丙二醇的聚酯。

    Preparation of amorphous metal/magnesium silicates
    5.
    发明授权
    Preparation of amorphous metal/magnesium silicates 失效
    无定形金属/硅酸镁的制备

    公开(公告)号:US4849395A

    公开(公告)日:1989-07-18

    申请号:US167251

    申请日:1988-03-11

    IPC分类号: B01J23/72 B01J37/30 C01B33/20

    CPC分类号: C01B33/20 B01J23/72 B01J37/30

    摘要: Amorphous metal/magnesium silicates of the general formulaM.sub.x Mg.sub.y (SiO.sub.2).nH.sub.2 O.where M is a divalent, reducible metal atom from the group consisting of Cu, FeII, Co and Ni, x and y are numbers which together can add up to a value of 1.5 and n after drying, expressed in % by weight, ranges from 0 to 80 are prepared by subjecting a freshly precipitated magnesium silicate to an ion exchange, washing the product and then neutralizing it with an alkali and are used in catalytic reactions after the reducible metal in the metal/magnesium silicates has been converted into the metallic state with a reducing gas.

    摘要翻译: 无定形金属/通式为MxMgy(SiO2)·nH2O的硅酸镁。 其中M是由Cu,FeII,Co和Ni组成的组中的二价可还原金属原子,x和y是数值,它们一起加起来的值为1.5,干燥后的n以重量%表示,范围为 通过将新鲜沉淀的硅酸镁进行离子交换,洗涤产物,然后用碱中和,制备0至80,并在金属/硅酸镁中的可还原金属转化为金属状态后用于催化反应 与还原气体。