METHOD FOR PRODUCING OXIDE AND METHOD FOR PRODUCING PT/BI COMPOSITE CATALYST

    公开(公告)号:US20240158332A1

    公开(公告)日:2024-05-16

    申请号:US18282263

    申请日:2022-03-18

    申请人: KAO CORPORATION

    发明人: Yukiko NOMURA

    摘要: The invention relates to a production method for an oxide capable of efficiently producing an oxide of an organic compound in the presence of raw materials for a Pt/Bi composite catalyst, and to a production method for a Pt/Bi composite catalyst capable of producing a catalyst that exhibits a high activity for dehydrogenation oxidation reaction of an organic compound even in the presence of an organic compound to be a raw material for an oxide. The oxide production method includes subjecting an organic compound having one primary hydroxy group to a dehydrogenative oxidation reaction in the presence of Pt supported by a carrier, a Bi ion source and water, under the condition such that the minimum value of the pH during the reaction is less than 7, thereby obtaining an oxide of the organic compound.

    METHOD FOR PREPARING GLYCOLIC ACID

    公开(公告)号:US20220306563A1

    公开(公告)日:2022-09-29

    申请号:US17610761

    申请日:2019-06-27

    申请人: RHODIA OPERATIONS

    摘要: Provided is a method for preparing glycolic acid which comprises oxidizing glycolaldehyde with molecular oxygen in the presence of a solvent and a supported catalyst. Said supported catalyst comprises (i) a noble metal selected from the group consisting of Pt, Pd, Ru and Rh, (ii) Bi and (iii) a support. Advantageously, the supported metallic catalyst is more active than the catalysts used in prior art. Furthermore, the catalyst is more stable at oxygen rich conditions.

    Method for producing polyoxyalkylene alkyl ether carboxylic acid or salt thereof
    9.
    发明授权
    Method for producing polyoxyalkylene alkyl ether carboxylic acid or salt thereof 有权
    聚氧化烯烷基醚羧酸或其盐的制备方法

    公开(公告)号:US09233904B2

    公开(公告)日:2016-01-12

    申请号:US14369628

    申请日:2012-11-27

    申请人: Kao Corporation

    摘要: A method for producing polyoxyalkylene alkyl ether carboxylic acid or a salt thereof includes an oxidation reaction process of oxidizing polyoxyalkylene alkyl ether with oxygen by supplying an oxygen-containing gas to a suspension or a solution that has a depth of 200 mm or more and includes polyoxyalkylene alkyl ether. In the oxidation reaction process, a supply rate of the oxygen-containing gas is reduced in a period in which the conversion is greater than or equal to 50% and less than 70%.

    摘要翻译: 聚氧化烯烷基醚羧酸或其盐的制造方法包括通过向悬浮液或深度为200mm以上的溶液中供给含氧气体而使氧化聚氧化烯烷基醚与氧的氧化反应过程,并且包括聚氧化烯 烷基醚。 在氧化反应过程中,在转化率大于或等于50%且小于70%的时段内,含氧气体的供给速率降低。