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    Process for preparing by catalytic oxidation in oxygen-containing gas mixtures, acrolein from propylene and methacrolein from isobutylene or tertiary butanol
    4.
    发明授权
    Process for preparing by catalytic oxidation in oxygen-containing gas mixtures, acrolein from propylene and methacrolein from isobutylene or tertiary butanol 失效
    在含氧气体混合物中通过催化氧化制备的方法，来自丙烯的丙烯醛和异丁烯或叔丁醇的异丁烯醛

    公开(公告)号：US4442308A

    公开(公告)日：1984-04-10

    申请号：US390448

    申请日：1982-06-21

    申请人： Dietrich Arntz ,  Gunter Prescher ,  Johannes Heilos

    发明人： Dietrich Arntz ,  Gunter Prescher ,  Johannes Heilos

    IPC分类号： C07C47/22 ,  B01J27/00 ,  B01J27/192 ,  B01J37/02 ,  C07B61/00 ,  C07C45/00 ,  C07C45/29 ,  C07C45/35 ,  C07C45/37 ,  C07C51/25 ,  C07C67/00 ,  C07C45/38

    CPC分类号： C07C45/37 ,  B01J37/0221 ,  C07C45/35 ,  C07C51/252

    摘要： A process is disclosed for preparing acrolein from propylene and methacrolein from isobutylene or tertiary butanol, by oxidation in oxygen-containing gas mixtures on specially prepared coated catalysts comprised of an inert support and a coating, enclosing this support, of an oxidic catalyst material containing the elements nickel, cobalt, iron, bismuth, phosphorus, molybdenum and tantalum or samarium and, if appropriate, also alkali metal or alkaline earth metal in certain atomic ratios. This coated catalyst is obtained by spraying a suspension of the starting material for the coating, which suspension contains a binder and, if appropriate, a pore-former, from above in an increasing amount onto a bed of the support, which bed is mechanically agitated and loosened up by a gas stream blow in from below, the ratio between suspending medium sprayed on and removed again by the gas stream remaining approximately constant. The thermal expansion coefficient of the precursor as a dry powder must not deviate by more than 15% from the coefficient of the support. The coating is densified by further agitation, and the material is dried in the continuing gas stream and heat-treated, if appropriate after decomposition of an added pore-former.

    摘要翻译： 公开了一种用于由丙烯和异丁烯醛从异丁烯或叔丁醇制备丙烯醛的方法，通过在含氧气体混合物中氧化的特殊制备的包含惰性载体的涂层催化剂和包封该载体的涂层上含有 元素镍，钴，铁，铋，磷，钼和钽或钐，如果合适的话也是某些原子比的碱金属或碱土金属。 该涂覆的催化剂是通过将悬浮液中含有粘合剂的悬浮液（如果合适的话），并且如果合适的话将喷雾剂从上面喷洒到载体的床上，将该床的机械搅拌 并从下面吹入的气流松动，喷雾并再次被气流保持大致恒定的悬浮介质之间的比例。 作为干粉的前体的热膨胀系数不能偏离载体系数的15％以上。 通过进一步搅拌使涂层致密化，并且在连续气流中干燥材料并在分解添加的成孔剂后适当地进行热处理。

    Method for preparation of acetals
    5.
    发明授权
    Method for preparation of acetals 失效
    缩醛的制备方法

    公开(公告)号：US4579979A

    公开(公告)日：1986-04-01

    申请号：US694371

    申请日：1985-01-24

    申请人： Juan Andrade ,  Dietrich Arntz ,  Michael Kraft ,  Gunter Prescher

    发明人： Juan Andrade ,  Dietrich Arntz ,  Michael Kraft ,  Gunter Prescher

    IPC分类号： C07C41/50 ,  B01J21/00 ,  B01J29/00 ,  B01J31/00 ,  C07B61/00 ,  C07C41/00 ,  C07C41/56 ,  C07C41/58 ,  C07C43/303 ,  C07C67/00 ,  C07C43/30

    CPC分类号： C07C41/56 ,  C07C41/58

    摘要： A method of preparation for acetals utilizing saturated or unsaturated aldehydes, in particular, the preparation of dimethylacetals of acetaldehyde, acrolein and methacrolein. The production of the acetal takes place in a liquid phase in the presence of a solid acid catalyst, such as a strongly acidic ion exchange resin or zeolite. The conversion mixture is extracted by means of water and by means of water insoluble organic solvents. There is obtained not only the desired acetals, but in addition also the unconverted initial quantities of the starting materials by a simple method and with very good yields.

    摘要翻译： 一种制备使用饱和或不饱和醛的缩醛的方法，特别是制备乙醛，丙烯醛和甲基丙烯醛的二甲缩醛。 在固体酸催化剂如强酸性离子交换树脂或沸石的存在下，缩醛的生产在液相中进行。 转化混合物通过水和水不溶性有机溶剂萃取。 不仅获得所需的缩醛，而且通过简单的方法获得起始原料的未转化的初始量，并获得非常好的收率。

    Process for the preparation of propylene oxide
    9.
    发明授权
    Process for the preparation of propylene oxide 失效
    环氧丙烷的制备方法

    公开(公告)号：US4113747A

    公开(公告)日：1978-09-12

    申请号：US678822

    申请日：1976-04-28

    申请人： Gunter Prescher ,  Gerd Schreyer ,  Otto Weiberg ,  Rolf Wirthwein ,  Helmut Waldmann ,  Hermann Seifert ,  Wulf Schwerdtel ,  Wolfgang Swodenk

    发明人： Gunter Prescher ,  Gerd Schreyer ,  Otto Weiberg ,  Rolf Wirthwein ,  Helmut Waldmann ,  Hermann Seifert ,  Wulf Schwerdtel ,  Wolfgang Swodenk

    IPC分类号： C07C409/24 ,  C07D301/14

    CPC分类号： C07C409/24 ,  C07C407/00 ,  C07C407/003 ,  C07D301/14

    摘要： Process for continuous production of propylene oxide (FIG. 1) from propylene and aqueous hydrogen peroxide. The aqueous hydrogen peroxide is first reacted with propionic acid in the presence of acid catalyst to form perpropionic acid (1). The perpropionic acid is taken up by extraction in benzene (5 , 12), and following drying of the benzene solution (16), the perpropionic acid in the solution is reacted with propylene (18) for oxidation of the propylene to propylene oxide and conversion of the perpropionic acid back to propionic acid. The reaction mixture is worked up to separate propylene oxide, propionic acid and benzene (25, 27, 31, 33), and the latter two are recycled. In the benzene extraction (5, 12), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. Water is removed from the aqueous raffinate (8) and the concentrate is recycled to the propionic acid reactor. Make-up hydrogen peroxide can be added to the aqueous raffinate before the removal of water.

    摘要翻译： 从丙烯和过氧化氢水溶液连续生产环氧丙烷（图1）的方法。 过氧化氢水溶液首先在酸催化剂存在下与丙酸反应形成过丙酸（1）。 通过在苯（5,12）中萃取，过丙酸被吸收，然后在苯溶液（16）干燥后，将溶液中的过丙酸与丙烯（18）反应，将丙烯氧化成环氧丙烷并转化 的过丙酸回到丙酸。 处理反应混合物以分离环氧丙烷，丙酸和苯（25,27,31,33），后两者被再循环。 在苯提取（5,12）中，形成含有过氧化氢和酸催化剂的残液水溶液（7）。 水从残液（8）中除去，浓缩物再循环到丙酸反应器中。 在除去水之前，可以将补充过氧化氢加入含水残液中。