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Multi:metal oxide useful as catalyst esp. in gas phase oxidn. of acrolein to acrylic acid

机译:多种:金属氧化物尤其可用作催化剂。在气相中被氧化。丙烯醛制丙烯酸

摘要

Multimetal oxide compsn. of formula (I) is new: (A)p (B)q (I): A = Mo12VaX1bX2cX3dX4eX5fX6gOx (co-phase); B = X712CuhHiOy (key phase); X1 = W, Nb, Ta, Cr and/or Ce; X2 = Cu, Ni, Co, Fe, Mn and/or Zn; X3 = Sb and/or Bi; X4 = Li, Na, K, Rb, Cs and/or H; X5 = Mg, Ca, Sr and/or Ba; X6 = Si, Al, Ti and/or Zr; X7 = Mo, W, V, Nb and/or Ta; a = 1-8; b = 0.2-5; c = 0-23; d, g = 0-50; e = 0-2; f = 0-5; h = 4-30; i = 0-20; x, y = values depending on the valency and content of elements other than O; p, q = values other than O, with the ratio p/q = 160:1 to 1:1. The A and B fractions are each in the form of 30 zones, which differ in chemical compsn. from their local surroundings, and the relative distribution of the A and B zones is as in a mixt. of finely-divided A and finely-divided B. Also claimed are multimetal oxide compsns. of wolframite structural type, of formulae (II), (III), (IV) and (V): in (II), 1/(A+B+C+D+E) = 0.7-1.3; F = 0-1; and B+C+D+E = over 0 to 1. In (III), 1/(A+B+C) = 0.7-1.3; A, B, C all = more than O and B+C = at most 1; In (IV), 1/(A+B) = 0.7-1.3; A, B both = more than O and B = at most 1; In (V), 1/(A+C) = 0.7-1.3; A, C both more than O and C at most 1.
机译:多金属氧化物复合物。式(I)的式子是新的:(A)p(B)q(I):A = Mo12VaX 1 bX 2 cX 3 3 dX 4 eX 5 fX 6 gOx(co-相); B = X 7 12 CuhHiOy(关键相); X 1 = W,Nb,Ta,Cr和/或Ce; X 2 = Cu,Ni,Co,Fe,Mn和/或Zn;和X 3 = Sb和/或Bi; X 4 = Li,Na,K,Rb,Cs和/或H; X 5 = Mg,Ca,Sr和/或Ba; X 6 = Si,Al,Ti和/或Zr; X 7 = Mo,W,V,Nb和/或Ta; a = 1-8; b = 0.2-5; c = 0-23; d,g = 0-50; e = 0-2; f = 0-5; h = 4-30; i = 0-20; x,y =取决于O以外的元素的价和含量的值; p,q = O以外的值,比率p / q = 160:1到1:1。 A和B馏分分别以30个区域的形式存在,其化学成分不同。从它们周围的环境来看,A和B区域的相对分布就像混合。还要求保护的是细分的A和细分的B。还要求保护多金属氧化物化合物。式(II),(III),(IV)和(V)的黑钨矿结构类型:在(II)中,1 /(A + B + C + D + E)= 0.7-1.3; F = 0-1;并且B + C + D + E = 0至1。在(III)中,1 /(A + B + C)= 0.7-1.3; A,B,C全部=大于O,并且B + C =最多1;在(IV)中,1 /(A + B)= 0.7-1.3; A,B都等于O,B最多为1;在(V)中,1 /(A + C)= 0.7-1.3; A,C最多比O和C多1。

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