Oxide catalyst composition

Details Oxide catalyst composition Oxide catalyst composition

2006-03-14

2006-03-14

Lorengo, J. A. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S302000, C502S305000, C502S311000, C502S313000, C568S907000, C560S205000, C560S208000, C560S210000, C562S545000, C562S546000, C562S547000

Reexamination Certificate

active

07012039

ABSTRACT:
An oxide catalyst composition for use in producing methacrolein or a mixture of methacrolein and methacrylic acid, wherein the oxide catalyst composition is represented by the formula (Mo+W)l2BiaAbBcFedXeSbfOg, wherein: A is at least one member selected from the group consisting of Y and the elements of the lanthanoid series exclusive of Pm; B is at least one member selected from the group consisting of K, Rb and Cs; X is Co solely, or a mixture of Co and at least one member selected from the group consisting of Mg and Ni; and a, b, c, d, e, f and g are, respectively, the atomic ratios of Bi, A, B, Fe, X, Sb and O, relative to twelve atoms of the total of Mo and W, wherein the atomic ratios (a to f) of the elements and the relationship between the amounts of the elements are chosen so as to satisfy specific requirements.

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“Sekiyu Kagaku Purosesu (Petrochemical Process)”, published by Kodansha Scientific, Inc., Japan, pp. 172 to 176 (Aug. 10, 2001).

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