Catalyst for oxidizing methylbenzenes and method for producing aromatic aldehyde
    1.
    发明授权
    Catalyst for oxidizing methylbenzenes and method for producing aromatic aldehyde 失效
    用于氧化甲基苯的催化剂和芳香族醛的制备方法

    公开(公告)号:US06458737B1

    公开(公告)日:2002-10-01

    申请号:US09709276

    申请日:2000-11-13

    IPC分类号: B01J3100

    摘要: The present invention has for its object to provide a novel catalyst by use of which methylbenzenes can be oxidized in gaseous phase in the presence of molecular oxygen to give the corresponding aromatic aldehydes in high yields, a process for producing an aromatic aldehyde from the corresponding methylbenzene in a high yield by use of said catalyst, and a process for producing cyclohexanedimethanol which comprises hydrogenating phthalaldehyde among the aromatic aldehydes which can be obtained as above. The present invention is directed to a catalyst for oxidation of methylbenzene which is used for the production of the corresponding aromatic aldehyde by the gas-phase oxidation of a methylbenzene in the presence of molecular oxygen, and has a composition of the following general formula (1): WaXbYcOx  (1)  wherein W represents a tungsten atom; X represents at least one kind of element selected from the group consisting of P, Sb, Bi and Si; Y represents at least one element selected from the group consisting of Fe, Co, Ni, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Tl, Sn, Mg, Ca, Sr, Ba, Li, Na, K, Rb and Cs; O represents an oxygen atom; a, b, c and x represent the numbers of atoms of W, X, Y and O, respectively; provided, however, the proportions of a, b and c are such that when a=12, b=0.5 to 10 and c=0 to 15; X represents a numerical value which is determined by the oxidized states of the elements other than oxygen.

    摘要翻译: 本发明的目的是提供一种新的催化剂,其中使用甲基苯可以在分子氧存在下在气相中被氧化,以高产率得到相应的芳族醛,从相应的甲苯生产芳族醛的方法 通过使用所述催化剂以高产率,以及生产环己烷二甲醇的方法,其包括在如上所述可获得的芳族醛中氢化邻苯二甲醛。本发明涉及一种用于生产甲基苯的氧化的催化剂 相应的芳族醛通过甲基苯在分子氧存在下的气相氧化,并具有以下通式(1)的组成:其中W表示钨原子; X表示选自P,Sb,Bi和Si中的至少一种元素; Y表示选自Fe,Co,Ni,Mn,Re,Cr,V,Nb,Ti,Zr,Zn,Cd,Y,La,Ce,B,Al, Mg,Ca,Sr,Ba,Li,Na,K,Rb和Cs; O表示氧原子; a,b,c和x分别表示W,X,Y和O的原子数; 但是,a,b和c的比例使得当a = 12时,b = 0.5〜10,c = 0〜15; X表示由氧以外的元素的氧化态决定的数值。

    Producing method of alcohols such as cyclohexanedimethanol
    3.
    发明授权
    Producing method of alcohols such as cyclohexanedimethanol 失效
    醇类如环己烷二甲醇的生产方法

    公开(公告)号:US06600080B1

    公开(公告)日:2003-07-29

    申请号:US09676937

    申请日:2000-10-02

    IPC分类号: C07C3113

    摘要: In a producing method of alcohols such as cyclohexanedimethanol, a benzyl ester is obtained, for example, by the reaction between a benzyl compound and carboxylic acid in the presence of oxygen and a catalyst including palladium, gold ultra fine particles, and at least one kind of element selected from the group consisting of Group IIA, IIIA, VIA, IIB, VB, and VIII of the periodic table, and alkali metal. The alcohols are produced by hydrogenating a benzene ring of the benzyl ester and then hydrolyzing the resultant esters. Alternatively, the benzyl ester is hydrolyzed to produce benzyl alcohols, and a benzene ring of the benzyl alcohols is hydrogenated to produce the alcohols.

    摘要翻译: 在诸如环己烷二甲醇的醇的制备方法中,例如苄基化合物和羧酸在氧气和催化剂(包括钯,金超细颗粒)和至少一种 的选自元素周期表的IIA,IIIA,VIA,IIB,VB和VIII族的元素和碱金属。 醇通过将苯甲酯的苯环氢化,然后水解所得的酯来制备。 或者,将苄基酯水解生成苄醇,将苯甲醇的苯环氢化生成醇。