PRODUCTION OF BETA-HYDROXYALDEHYDE

    公开(公告)号:JP2000143574A

    公开(公告)日:2000-05-23

    申请号:JP31832599

    申请日:1999-11-09

    Applicant: DEGUSSA

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound with high selectivity and at high yield without using much catalyst by reacting an oxirane with CO and H2 in the presence of a catalyst i.e., a transition metal modified with a specified ligand. SOLUTION: This compound is (E) a β-hydroxyaldehyde and is obtained by reacting (B) a 1,2-oxirane with (C) carbon monoxide and (D) hydrogen in the presence of (A) a transition metal modified with a phosphorus-oxygen-ligand or nitrogen-oxygen-ligand and working as a catalyst. A cobolt-carbonyl-catalyst combined with phosphine oxide is preferably used as the component A and the ratio of oxygen based on phosphorus in the phosphine oxide is preferably 0.5-2.0. High yield is expectable thereby without using any accelerant.

    PROCESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE
    2.
    发明申请
    PROCESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE 审中-公开
    生产过氧化氢的方法

    公开(公告)号:WO03082735A8

    公开(公告)日:2004-03-04

    申请号:PCT/EP0302181

    申请日:2003-03-04

    CPC classification number: C01B15/023 B01J23/96 B01J35/023 Y02P20/584

    Abstract: The invention relates to a process for the production of hydrogen peroxide by the anthraquinone process, comprising a hydrogenation stage, an oxidation stage and an extraction stage. According to the invention, catalytic hydrogenation of anthraquinone derivatives dissolved in a working solution is carried out in the presence of added molecular oxygen. Per mol hydrogen, 0.1 to 10 mmol oxygen is preferably introduced into the hydrogenation stage with the hydrogenating gas, in mixture with an inert gas and/or dissolved and/or dispersed in the working solution. This increases the residence time of the catalyst.

    Abstract translation: 本发明涉及一种通过蒽醌法生产过氧化氢的方法,包括氢化阶段,氧化阶段和萃取阶段。 根据本发明,溶解在工作溶液中的蒽醌衍生物的催化氢化在加入的分子氧的存在下进行。 每摩尔氢气,优选将0.1至10mmol氧气与氢化气体一起引入氢化阶段,与惰性气体混合和/或溶解和/或分散在工作溶液中。 这增加了催化剂的停留时间。

    METHOD FOR CATALYTICALLY HYDRATING ORGANIC COMPOUNDS AND SUPPORTED CATALYST USED IN SAID METHOD
    4.
    发明申请
    METHOD FOR CATALYTICALLY HYDRATING ORGANIC COMPOUNDS AND SUPPORTED CATALYST USED IN SAID METHOD 审中-公开
    PROCESS FOR有机化合物和载体催化剂THEREFOR催化加氢

    公开(公告)号:WO0236260A8

    公开(公告)日:2002-09-19

    申请号:PCT/EP0112043

    申请日:2001-10-12

    Applicant: DEGUSSA

    Abstract: The invention relates to a method for catalytically hydrating an organic compound, especially an unstable organic compound, in the presence of a supported catalyst that is provided with a coating that contains ruthenium as the active metal and a total of 0.01 to 30 % by weight of active metals. The aim of the invention is to increase stereoselectivity and catalyst service life. To this end, a supported catalyst is used whose oxide-, carbide-, nitride- or silicate-containing support material, prior to being charged with at least one active metal, has a BET(N2) surface of less than 10 m /g, preferably 0.1 to 5 m /g, with the exception of diatomaceous earth with a BET(N2) surface of greater 2 m /g, and whose ruthenium content constitutes at least 50 % by weight, preferably at least 99 % by weight, of the active metals. The invention further relates to the aforementioned supported catalysts. The method and catalysts according to the invention are especially suitable for hydrating polyfunctional compounds such as hydroxycarbonyl compounds and aromatic amines.

    Abstract translation: 本发明涉及一种用于有机化合物的催化氢化,特别是在含有钌作为活性金属和共活性金属涂层的0.01至30重量%的负载型催化剂的存在下不稳定有机化合物的方法。 根据本发明,可与至少一种活性金属装载之前,使用负载的催化剂,该氧化物carbidisches,氮化的或硅酸盐载体材料时,具有BET的小于10μm<2> /克(N 2)的表面区域中获得更高的立体选择性和更高的催化剂寿命 ,特别优选为0.1〜5μm的<2> / g和具有BET硅藻土(N2)表面积大于2m <2> /克被排除,并且其钌中的至少50重量%含量,优选至少99 %的.-%的活性金属。 本发明还涉及上文所述的负载型催化剂。 具体地说,该方法和用于多官能化合物,如羟基羰基化合物和芳香胺的氢化的催化剂。

    PROCESS FOR THE EPOXIDATION OF PROPENE

    公开(公告)号:MY165609A

    公开(公告)日:2018-04-16

    申请号:MYPI2017703489

    申请日:2016-04-19

    Abstract: In a process for the epoxidation of propene, comprising the steps: reacting propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent; separating non-reacted propene and propene oxide from the resulting reaction mixture to provide a solvent mixture comprising methanol and water in a combined amount of at least 90 % by weight; and feeding this solvent mixture as a feed stream to a continuously operated methanol distillation column at a feed point in the middle section of said column to provide an overhead product comprising at least 90 % by weight methanol and a bottoms product comprising at least 90 % by weight water; the addition of a liquid defoamer, having a solubility in the feed stream of less than 10 mg/kg at 25 °C and a surface tension at the liquid air interface of less than 22 mN/m at 20 °C, at or above the feed point in an amount exceeding the solubility of the liquid defoamer in the feed stream suppresses foam formation in the methanol distillation column.

    9.
    发明专利
    未知

    公开(公告)号:BRPI0411459A

    公开(公告)日:2006-07-18

    申请号:BRPI0411459

    申请日:2004-06-11

    Applicant: DEGUSSA UHDE GMBH

    Abstract: The invention is directed to an improved process for the continuous epoxidation of propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent, wherein the catalyst is periodically regenerated by washing with a methanol solvent at a temperature of at least 100 DEG C and the epoxidation reaction is carried out for periods of more than 300 h between two regeneration steps.

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