Patent ID: 6500779
Filing Date: 2002-12-31
Classification: B01J,C07C

Abstract:
A process for the preparation of a molybdenum compound comprising a molybdenum compound of formula I, II, III, IV or V:I VqMoAyOz II NiMoxByOzâ€²III VNiwMoxCyâ€²Ozâ€³IV CoNiwMoxDyOzâ€²â€³V VNiwCorMoxEyOzâ€³â€³wherein:q is a number from 0.1 to 10; r is a number from 0.1 to 10; w is a number from 0.1 to 10; x is a number from 0.1 to 10; y is a number from 0.1 to 10; yâ€² is a number from 0 to 10, A is at least one cation selected from the group consisting of cations of: Cr, Ce and Pb; B is at least one cation selected from the group consisting of cations of: Al and W; C is at least one cation selected from the group consisting of cations of: Fe, Zn, Al, Sb, Bi, W, Li, Ba, Nb and Sn; D is at least one cation selected from the group consisting of cations of: Ba, Mn, Al, Sb, Sn, and W; E is at least one cation selected from the group consisting of cations of: Fe, Ca, Mn, Sr, Eu, La, Zr, Ga, Sn and Pb; and z, zâ€², zâ€³, zâ€²â€³, and zâ€³â€³ are determined using the amounts and oxidation states of all cations present in each formula according to the following equations: z=((q times oxidation state of V)+(1 times oxidation state of Mo)+(y times oxidation state of A)) divided by 2 (oxidation state of oxygen); zâ€²=((1 times oxidation state of Ni)+(x times oxidation state of Mo)+(y times oxidation state of B)) divided by 2 (oxidation state of oxygen); zâ€³=((1 times oxidation state of V)+(w times the oxidation state of Ni)+(x times oxidation state of Mo)+(yâ€² times oxidation state of C)) divided by 2 (oxidation state of oxygen); zâ€²â€³=((1 times oxidation state of Co)+(w times the oxidation state of Ni)+(x times oxidation state of Mo)+(yâ€² times oxidation state of D)) divided by 2 (oxidation state of oxygen); and zâ€³â€³=((1 times oxidation state of V)+(w times the oxidation state of Ni)+(r times the oxidation state of Co)+(x times oxidation state of Mo)+(yâ€² times oxidation state of E)) divided by 2 (oxidation state of oxygen), comprising the steps of: contacting at least one compound having a cation of the molybdenum with at least one cation containing compound for each of the other cations of the molybdenum compound in a solution comprising water to form a resultant solution or colloid; freezing the resultant solution or colloid to form a frozen material; freeze drying the frozen material; and heating the dried frozen material to yield the molybdenum compound of formula I, II, III, IV, or V.