Selective oxidation of acetylenes
AssigneePhillips Petroleum Company
InventorsLewis E. Drehman, Floyd Farha, Jr.
Life of this patent
Estimating the term…
Abstract
Acetylenic compounds are selectively removed from hydrocarbon mixtures containing same by oxidation in the presence of a copper-manganese-rare earth metal-zinc aluminate catalyst. In one embodiment, acetylenic compounds are selectively removed from a conjugated diene mixture containing same by contacting oxygen and the mixture with a catalyst of zinc aluminate promoted with copper, manganese, and a rare earth metal under oxidizing conditions.
Claims7
A process for the selective removal of acetylenic contaminants or impurities present in hydrocarbon streams which comprises contacting oxygen and a gaseous hydrocarbon stream comprising lower olefins and diolefins contaminated with relatively minor amounts of acetylenic compounds with a catalyst consisting essentially of zinc aluminate promoted with copper, manganese, and a rare earth metal in which each of the promoter metals is present in an amount ranging from about 0.1 to about 20 weight percent based on the weight of zinc aluminate plus metal promoters under oxidation conditions including a temperature and a mole ratio of oxygen to hydrocarbon sufficient to remove a substantial portion of said acetylenic compounds present in said stream without destroying desirable unsaturated hydrocarbons present in the stream treated.
Dependencies are inferred from the claim text.