Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1978-03-30
1980-11-18
Gantz, Delbert E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252432, 252461, 252467, 252468, B01J 2310, B01J 2102, B01J 2100, B01J 2316
Patent
active
042344611
ABSTRACT:
Catalysts comprising the combined oxides of vanadium and at least one element selected from the group consisting of boron, niobium, tantalum, antimony, tungsten and chromium have been found to be especially effective in the oxidation of n-butane, n-butenes and butadiene, or a mixture thereof with molecular oxygen in the vapor phase to yield maleic anhydride. The catalysts of the present invention may be further promoted with additional elements to enhance activity, stability and selectivity. The reaction with n-butane gives an especially pure product in good yield and selectivity.
REFERENCES:
patent: 3704317 (1972-11-01), Yamashita et al.
patent: 3907919 (1975-09-01), Lo et al.
patent: 4010238 (1977-03-01), Shiraishi et al.
patent: 4075231 (1978-02-01), Dolhyj et al.
Bremer Noel J.
Grasselli Robert K.
Suresh Dev D.
Curatolo Joseph G.
Evans Larry W.
Gantz Delbert E.
Knudsen Herbert D.
Standard Oil Company (Ohio)
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