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32 条记录 (耗时 0.017 秒)

    Selective hydrogenation of unsaturated carbonyl compounds
    2.
    发明授权
    Selective hydrogenation of unsaturated carbonyl compounds 失效
    不饱和羰基化合物的选择性氢化

    公开(公告)号：US4536347A

    公开(公告)日：1985-08-20

    申请号：US590647

    申请日：1984-03-19

    申请人： Michael Horner ,  Matthias Irgang

    发明人： Michael Horner ,  Matthias Irgang

    IPC分类号： C07C29/132 ,  B01J23/89 ,  C07B61/00 ,  C07C27/00 ,  C07C29/136 ,  C07C29/141 ,  C07C29/145 ,  C07C33/02 ,  C07C33/03 ,  C07C67/00 ,  C07C121/75 ,  C07C29/14

    CPC分类号： C07C29/141 ,  B01J23/8906 ,  C07C29/145 ,  C07C33/02 ,  C07C33/03

    摘要： Ruthenium-on-charcoal and ruthenium-on-carbon black catalysts, containing from 0.1 to 5% by weight of iron, for the preparation of olefinically unsaturated alcohols by selective hydrogenation of the corresponding .alpha., .beta.-unsaturated carbonyl compounds in the liquid phase are prepared by modifying the catalyst with iron only after it has been impregnated with the ruthenium compound, and reducing the catalyst with hydrogen at from 400.degree. to 600.degree. C., with thorough mixing.The catalysts according to the invention are particularly useful for improving the industrially difficult hydrogenation of citral to give the soughtafter fragrances geraniol and nerol.

    摘要翻译： 含有0.1至5重量％的铁的钌 - 炭和钌 - 炭黑催化剂，用于通过液相中相应的+60，β-不饱和羰基化合物的选择性氢化制备烯属不饱和醇 通过在用钌化合物浸渍之后用铁改性催化剂，并通过充分混合在400℃至600℃下用氢还原催化剂。 根据本发明的催化剂特别可用于改进柠檬醛的工业难加氢以产生松散香料香叶醇和橙花醇。

    Preparation of olefinically unsaturated carbonyl compounds and alcohol
    4.
    发明授权
    Preparation of olefinically unsaturated carbonyl compounds and alcohol 失效
    烯属不饱和羰基化合物和醇的制备

    公开(公告)号：US4320228A

    公开(公告)日：1982-03-16

    申请号：US166858

    申请日：1980-07-08

    申请人： Michael Horner ,  Matthias Irgang ,  Axel Nissen

    发明人： Michael Horner ,  Matthias Irgang ,  Axel Nissen

    IPC分类号： C07C47/21 ,  B01J23/00 ,  B01J23/40 ,  B01J31/02 ,  C07B61/00 ,  C07C27/00 ,  C07C29/136 ,  C07C29/145 ,  C07C29/17 ,  C07C33/02 ,  C07C33/025 ,  C07C45/00 ,  C07C45/62 ,  C07C49/203 ,  C07C67/00

    CPC分类号： C07C45/62 ,  C07C29/175 ,  C07B2200/09

    摘要： Olefinically unsaturated carbonyl compounds R.sup.1 --CHR.sup.2 --CHR.sup.3 --C(R.sup.4)O (I) and alcohols R.sup.1 --CHR.sup.2 --CHR.sup.3 --CH(R.sup.4)--OH (II) (where R.sup.1 is an olefinically unsaturated organic radical, and R.sup.2, R.sup.3 and R.sup.4 are H or C.sub.1 -C.sub.4 -alkyl) are prepared by hydrogenating the carbonyl compounds R.sup.1 --CR.sup.2 .dbd.CR.sup.3 --C(R.sup.4)O (III) in the liquid phase with hydrogen, using a catalyst system comprising, firstly, Pd and, secondly, Ru, Rh, Os, Ir or Pt, in the presence of from 5 to 40% by weight, based on (III), of a tertiary amine, under a hydrogen pressure of from 1 to 20 bar is predominantly (I) is to be obtained and from 20 to 150 bar if predominantly (II) is to be obtained.The process is of particular importance for the hydrogenation of citral (IIIa) to give citronellal (Ia) or citronellol (IIa), the preferred amine being trimethylamine.

    摘要翻译： 烯属不饱和羰基化合物R1-CHR2-CHR3-C（R4）O（Ⅰ）和醇R1-CHR2-CHR3-CH（R4）-OH（Ⅱ）（其中R1是烯属不饱和有机基团，R2，R3和 R 4是H或C 1 -C 4 - 烷基）是通过使用包含以下的催化剂体系氢气氢化羰基化合物R1-CR2 = CR3-C（R4）O（Ⅲ）来制备的，首先是Pd，其次是 ，Ru，Rh，Os，Ir或Pt在1-5重量％的存在下，在（III）的叔胺的存在下，在1至20巴的氢气压力下，主要是（I） 如果要获得主要（II），则为20至150巴。 该方法对于柠檬醛（IIIa）的氢化以产生香茅醛（Ia）或香茅醇（IIa）是特别重要的，优选的胺是三甲胺。

    Preparation of amorphous metal/magnesium silicates
    8.
    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

    申请人： Laszlo Marosi ,  Joachim Stabenow ,  Knut Eger ,  Matthias Irgang ,  Guenter Zirker

    发明人： Laszlo Marosi ,  Joachim Stabenow ,  Knut Eger ,  Matthias Irgang ,  Guenter Zirker

    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。

    Preparation of furan by decarbonylation of furfural
    9.
    发明授权
    Preparation of furan by decarbonylation of furfural 失效
    通过糠醛脱羰制备呋喃

    公开(公告)号：US4780552A

    公开(公告)日：1988-10-25

    申请号：US97070

    申请日：1987-09-16

    申请人： Ludwig Wambach ,  Matthias Irgang ,  Martin Fischer

    发明人： Ludwig Wambach ,  Matthias Irgang ,  Martin Fischer

    IPC分类号： C07D307/36

    CPC分类号： C07D307/36

    摘要： Furan is prepared by decarbonylation of furfural in the gas phase at elevated temperatures and under from 0.1 to 10 bar in the presence of hydrogen and a catalyst which contains platinum and/or rhodium and contains an alkali metal. The reaction is carried out in the presence of hydrogen. Catalysts which contain platinum and/or rhodium and to which cesium has been added are preferably used.

    摘要翻译： 呋喃通过在气相中在高温下和在0.1〜10巴下在氢气和含有铂和/或铑的催化剂中含有碱金属的糠醛脱羰制备。 反应在氢的存在下进行。 优选使用含有铂和/或铑并添加有铯的催化剂。