Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1974-06-03
1976-06-01
Coughlan, Jr., Paul M.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252468, 260669R, 260680R, 2606833, B01J 2326
Patent
active
039609758
ABSTRACT:
Magnesium chromites promoted with aluminum have been found to be superior to chromia-alumina type dehydrogenation catalysts, for example, in the dehydrogenation of n-butane. The aluminum is either added to the preformed magnesium chromite or is incorporated into the spinel structure of the chromite itself or added in both ways. The aluminum will be present in the catalyst from all sources in an atomic ratio of Al:Cr of 0.0004 to 1.2:1. The atomic ratio will more usually be 0.04 to 0.8:1, Al:Cr.
REFERENCES:
patent: 2209458 (1940-07-01), Heard et al.
patent: 3781376 (1973-12-01), Manning
Coughlan, Jr. Paul M.
Dry N. Elton
Johnson Kenneth H.
Petro-Tex Chemical Corporation
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