Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1980-06-02
1981-08-11
Shine, W. J.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252435, 252437, 252477R, 26034675, B01J 2322, B01J 2718, B01J 3500
Patent
active
042833078
ABSTRACT:
Phosphorus-Vanadium oxidation catalyst prepared as tablets with a hole in the center produce higher yields of maleic anhydride from C.sub.4 's, particularly n-butane than the same catalyst without the hole.
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patent: 3985775 (1976-10-01), Harrison
patent: 4153539 (1979-05-01), Herrington et al.
patent: 4178298 (1979-12-01), Stefani et al.
Barone Bruno J.
Click Gaylon T.
Denka Chemical Corporation
Johnson Kenneth H.
Shine W. J.
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