Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Patent
1986-05-21
1987-11-24
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
423376, 558316, 558319, 558321, 558327, 558328, C07C12014, C07C12000
Patent
active
047090715
ABSTRACT:
A process for improving the activity of tellurium containing metal oxide catalysts useful as catalysts for oxidation, ammoxidation or oxidative dehydrogenation of organic compounds by heating the catalysts together with a tellurium containing solid and an optional molybdenum containing solid to a temperature up to about 900.degree. C. in a gaseous atmosphere. The process can be effectively applied to deteriorated or spent catalysts, the activity of which has been deteriorated due to use for a long period of time. The tellurium containing solid used as an activity improving agent is elemental tellurium and the molybdenum containing solid is selected from the group consisting of (i) a molybdenum compound, (ii) at least one molybdenum compound supported on an inert carrier, and (iii) a molybdenum enriched catalyst prepared by adding a Mo component to a metal oxide catalyst (which may be a fresh catalyst or a deteriorated catalyst). In a particularly preferred embodiment, the process for improving the activity according to the present invention can be carried out by contacting the deteriorated tellurium containing metal oxide catalyst with the elemental tellurium and optional molybdenum-containing solid in a fluidized-bed. More preferably, the contact is carried out during the oxidation, ammoxidation or oxidative dehydrogenation reaction.
REFERENCES:
patent: 3164627 (1965-01-01), Minekawa et al.
patent: 3168572 (1965-02-01), Voge et al.
patent: 3236782 (1966-02-01), Koch
patent: 3882159 (1975-05-01), Callahan et al.
patent: 4330429 (1982-05-01), Sasaki et al.
patent: 4374758 (1983-02-01), Sasaki et al.
patent: 4391880 (1983-07-01), Tsao
patent: 4409122 (1983-10-01), Kleuskens et al.
Kiyomiya Yutaka
Nakamura Toshio
Sasaki Yutaka
Brust Joseph Paul
Nitto Chemical Industry Co. Ltd.
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