阅读说明：本技术 包含Mo、Bi、Fe和Cu的多金属氧化物组合物 (Multimetal oxide composition comprising Mo, Bi, Fe and Cu ) 是由 天川和彦 C·沃尔斯多夫 K·J·米勒-恩格尔 C·K·多布纳 U·汉孟恩 于 2019-01-08 设计创作，主要内容包括：本发明涉及包含至少Mo、Bi、Fe、Cu和包含元素Co和Ni中的一种或多于一种以及元素Na、K、Rb和Cs中的一种或多于一种的多金属氧化物材料,以及所述多金属氧化物材料作为催化剂在丙烯部分气相氧化以形成丙烯醛和丙烯酸中的用途。所述多金属氧化物材料通过由其元素组分的来源产生细颗粒的、密实干燥混合物并在350℃至650℃的温度下煅烧而制备。(The present invention relates to a multimetal oxide material comprising at least Mo, Bi, Fe, Cu and comprising one or more than one of the elements Co and Ni and one or more than one of the elements Na, K, Rb and Cs, and the use of said multimetal oxide material as a catalyst in the partial gas phase oxidation of propylene to form acrolein and acrylic acid. The multi-metal oxide material is prepared by producing a finely divided, dense dry mixture from a source of its elemental components and calcining at a temperature of 350 ℃ to 650 ℃.)

1. A multimetal oxide composition comprising Mo, Bi, Fe and Cu and having the general stoichiometry formula I

Mo₁₂Bi_aFe_bCu_cCo_dNi_eW_fG_gH_hL_lM_mO_x(I)

Wherein the variables are each defined as follows:

g-one or more elements selected from K, Na, Rb and Cs,

h ═ one element or more than one element selected from Ba, Ca, Cr, Ce, La, Mg, Mn, Pb, Sn, Sr, and Zn,

one or more elements selected from B, Nb, P, Sb, Ta, Te, Ti, Y and Zr,

one element or more than one element selected from Al and Si,

a is 0.2 to 2.5,

b is 0.5 to 4,

c is 0.05 to 0.55,

d + e is 4 to 11,

f is 0 to 1.2,

g is 0.03 to 0.5,

h is 0 to 20, and (c),

l is 0 to 10, and,

m is 0 to 800, and

x is a number determined by the valence and frequency of the elements in I other than oxygen,

and the following conditions are satisfied:

12/(d + e +1.5 · b + h) ═ 0.8 to 2, and

a and c are 0.01 to 1.5.

2. The multi-metal oxide composition of claim 1, wherein the stoichiometric coefficient c is from 0.05 to 0.5.

3. The multi-metal oxide composition according to claim 1 or 2, wherein the stoichiometric coefficient c is from 0.05 to 0.45.

4. The multi-metal oxide composition according to any one of claims 1 to 3, wherein the stoichiometric coefficient c is from 0.05 to 0.4.

5. The multi-metal oxide composition according to any one of claims 1 to 4, wherein the stoichiometric coefficient c is from 0.05 to 0.35.

6. The multi-metal oxide composition according to any one of claims 1 to 5, wherein the stoichiometric coefficient c is from 0.1 to 0.3.

7. An eggshell catalyst comprising a shaped support and an eggshell of at least one multimetal oxide composition according to any one of claims 1 to 6 present on an outer surface of the shaped support.

8. Shaped unsupported catalyst body whose active ingredient is at least one multimetal oxide composition according to any one of claims 1 to 6.

9. Unsupported catalyst according to claim 8, having a ring geometry with a wall thickness of 1 to 3mm, a length of 2 to 10mm and an outer diameter of 2 to 10 mm.

10. A process for preparing a multimetal oxide composition according to any one of claims 1 to 6, comprising preparing a finely divided dry dense mixture from a source of its elemental components and calcining it at a temperature of from 350 ℃ to 650 ℃.

11. A process for the heterogeneously catalyzed partial gas phase oxidation of an alkane, alkanol, alkanal, alkene and/or alkenal having 3 to 6 carbon atoms on a catalyst bed, wherein the catalyst bed comprises at least one multimetal oxide composition according to any one of embodiments 1 to 6, or at least one catalyst according to any one of claims 7 to 9, or at least one product of the process according to claim 10.

12. The process according to claim 11, which is a process for the heterogeneously catalyzed partial gas-phase oxidation of propene to acrolein.

13. Use of at least one multimetal oxide according to any one of claims 1 to 6, or at least one catalyst according to any one of claims 7 to 9, or at least one product of the process according to claim 10, for catalysis in a process for the heterogeneously catalyzed partial gas phase oxidation of alkanes, alkanols, alkanals, alkenes and/or alkenals having 3 to 6 carbon atoms over a catalyst bed.