Molybdenum mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins

Molybdenum mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins

  • CN 104,220,162 A
  • Filed: 12/03/2012
  • Published: 12/17/2014
  • Est. Priority Date: 03/01/2012
  • Status: Active Application
First Claim
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1. one kind has the mixed-metal oxides of formula (I):

  • Mo aW bM cM'"'"' dM" eZfO g??(I) Wherein;

    M is selected from the trivalent metal in the group that is made up of trivalent transition metal, trivalent nontransition metal and their mixture;

    M'"'"' is selected from the divalent metal in the group that is made up of alkaline-earth metal, divalent transition metal, divalence nontransition metal and their mixture;

    M " the monovalent metal in the group formed for selecting free alkali metal, unit price transition metal and their mixture;

    Z is the form of oxide and the element be selected from the group be made up of cerium, antimony, phosphorus, boron, sulphur, silicon, aluminium, titanium, tellurium, vanadium, zirconium, niobium and their mixture when time in the preparation adding pre-catalyst to;

    A is the number between 12.3 and 14.0;

    B is the number between 0.0 and 0.4;

    C is the number between 2.0 and 4.0;

    D is the number between 5.0 and 8.0;

    E is number between 0.5 and 1.5;

    F is number between 0.5 and 1.5;

    AndG is the valent number meeting described formula;

    Wherein said mixed-metal oxides has;

    Be greater than 1.00 and be less than 2.00 anion and cation mole (ACM) ratio;

    WithM'"'"' and M mol ratio between 1.95 and 2.15, andWherein;

    Described ACM ratio is defined as (2 ×

    [Mo]+2 ×

    [W]) than (3 ×

    [M]+2 ×

    [M'"'"']+[M "]) or (2 ×

    [Mo]+2 ×

    [W])/(3 ×

    [M]+2 ×

    [M'"'"']+[M "]) or 2 (a+b)/(3c+2d+e).

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