Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2011-04-05
2011-04-05
Saeed, Kamal A (Department: 1626)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S241000, C502S302000, C502S304000, C502S306000, C558S308000
Reexamination Certificate
active
07919430
ABSTRACT:
It is an object to provide a novel oxide catalyst for producing an unsaturated acid or unsaturated nitrile by which reaction results are good and a high yield can be stably maintained for a prolonged period of time, a process for producing the oxide catalyst, and a process for producing an unsaturated acid or unsaturated nitrile using the oxide catalyst. According to the present invention, there is provided an oxide catalyst represented by following compositional formula (1):in-line-formulae description="In-line Formulae" end="lead"?Mo1VaSbbNbcMndWeYfOn (1)in-line-formulae description="In-line Formulae" end="tail"?wherein Y represents at least one element selected from alkaline earth metals and rare earth metals; a, b, c, d, e, f, and n each represents an atomic ratio based on one atom of Mo; 0.1≦a≦1, 0.01≦b≦1, 0.01≦c≦1, 0≦d≦0.1, 0≦e≦0.1, 0<(d+e)≦0.1, 0≦f≦1; and n is a number determined by valencies of the constituent metals.
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Komada Satoru
Tateno Eri
Asahi Kasei Chemicals Corporation
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Saeed Kamal A
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