Process for the oxidation of {60 ,{62 -unsaturated aldehydes to {60 ,{62 -unsaturated carboxylic acids
    8.
    发明授权
    Process for the oxidation of {60 ,{62 -unsaturated aldehydes to {60 ,{62 -unsaturated carboxylic acids 失效
    将{60,{62-不饱和醛氧化成{60,{62-不饱和羧酸)的方法

    公开(公告)号:US3867438A

    公开(公告)日:1975-02-18

    申请号:US38323273

    申请日:1973-07-27

    Applicant: DEGUSSA

    Abstract: Catalyst for the oxidation of an Alpha , Beta -unsaturated aldehyde to an Alpha , Beta -unsaturated carboxylic acid, said catalyst comprising (A) a mixture of oxides of the elements antimony, molybdenum, vanadium and tungsten and/or compounds of said elements and oxygen, and (B) at least one oxide or oxygen containing compound of the elements lead, silver, copper, tin, titanium or bismuth, said catalyst having an atomic ratio of antimony to molybdenum to vanadium to tungsten to Group (B) elements of about 1 - 60 : 12 : 0.5 - 25 : 0.1 - 12 : 0.1 - 12. Processes for the use and preparation of the catalysts are provided.

    Abstract translation: 用于将α,β-不饱和醛氧化成α,β-不饱和羧酸的催化剂,所述催化剂包含(A)元素锑,钼,钒和钨的氧化物和/或所述元素的化合物的混合物,和 氧,和(B)元素铅,银,铜,锡,钛或铋的至少一种氧化物或氧化物,所述催化剂具有锑与钼与钒的原子比与钒与钨的原子比与钨(B)元素的 约1:60:12:0.5 - 25:0.1 - 12:0.1 - 12。提供了使用和制备催化剂的方法。

    Method for the oxidizing alpha, beta-unsaturated aldehydes to alpha, beta-unsaturated carboxylic acids
    9.
    发明授权
    Method for the oxidizing alpha, beta-unsaturated aldehydes to alpha, beta-unsaturated carboxylic acids 失效
    将α,β-不饱和醛氧化成α,β-不饱和羧酸的方法

    公开(公告)号:US3867345A

    公开(公告)日:1975-02-18

    申请号:US29262872

    申请日:1972-09-27

    Applicant: DEGUSSA

    CPC classification number: B01J23/30 B01J23/28 C07C51/252 C07C57/04

    Abstract: Alpha , Beta -unsaturated aldehydes are oxidized to Alpha , Beta -unsaturated carboxylic acids by contacting the Alpha , Beta -unsaturated aldehyde with air or oxygen and steam at 200*350*C and at atmospheric or elevated pressure in the presence of a catalyst so as to convert the aldehyde to the corresponding carboxylic acid. The catalyst comprises a mixture of oxides of the elements antimony, molybdenum, vanadium and tungsten and/or compounds of said elements and oxygen wherein the atomic ratio of the elements is as follows: 1 to 60 : 12 : 0.5 to 25 : 0.1 to 12. The catalyst is made by intimately mixing under agitation aqueous solutions or suspensions of the oxides or other compounds, for instance antimony oxide, ammonium molybdate, ammonium vanadate and ammonium tungstate, and possibly a carrier material and preferably bringing the mixture to boiling point, then separating the catalyst mass from the aqueous phase, drying it and calcining it at 225*-275*C, followed by heating in air for 15-60 minutes at 350*-475*C.

    Abstract translation: α,β-不饱和醛被氧化成α,β-不饱和羧酸,通过使α,β-不饱和醛与空气或氧气和蒸汽在200-350℃和大气压或高压下在催化剂存在下接触 以将醛转化成相应的羧酸。 催化剂包括元素锑,钼,钒和钨的氧化物和/或所述元素和氧的化合物的混合物,其中元素的原子比如下:1至60:12:0.5至25:0.1至12 。

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