Hydrocarbon hydrogenation process
AssigneePhillips Petroleum Company
InventorsTin-Tack Peter Cheung, Marvin M. Johnson
Life of this patent
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Abstract
A supported hydrogenation catalyst composition is disclosed which comprises a palladium component, at least one alkali metal iodide such as, for example, potassium iodide and an inorganic support material such as alumina. Also disclosed is selective hydrogenation process in which diolefins and/or alkynes are hydrogenated with hydrogen to this corresponding monoolefins.
Claims31
A process comprising contacting a fluid which comprises a highly unsaturated hydrocarbon, in the presence of hydrogen, with a catalyst composition under a condition effective to convert said highly unsaturated hydrocarbon to a less unsaturated hydrocarbon wherein said catalyst composition consists essentially of a palladium-containing material selected from the group consisting of palladium metal, palladium oxides, and combinations of two or more thereof, an alkali metal iodide, and an inorganic support material.
A process comprising contacting an alkene fluid stream which comprises a highly unsaturated hydrocarbon, in the presence of hydrogen, with a catalyst composition under a condition effective to convert said highly unsaturated hydrocarbon to a less unsaturated hydrocarbon wherein
- said catalyst composition consists essentially of a palladium-containing material selected from the group consisting of palladium metal, palladium oxides, and combinations of two or more thereof, an alkali metal iodide, and an inorganic support material;
- said alkene is selected from the group consisting of ethylene, propylene, butenes, and mixtures of two or more thereof;
- said inorganic support material is selected from the group consisting of alumina, silica, titania, zirconia, aluminosilicates, zinc aluminate, zinc titanate, and mixtures of two or more thereof;
- said catalyst composition contains about 0.01 to about 2 weight % palladium and about 0.02 to about 10 weight % of an alkali metal;
- and
- said highly unsaturated hydrocarbon is selected from the group consisting of diolefins, alkynes, and combinations of two or more thereof.
A selective hydrogenation process comprising contacting a fluid stream which comprises ethylene and a highly unsaturated hydrocarbon, in the presence of hydrogen, with a catalyst composition under a condition effective to convert said highly unsaturated hydrocarbon to a less unsaturated hydrocarbon wherein
- said catalyst composition consists essentially of a palladium-containing material selected from the group consisting of palladium metal, palladium oxides, and combinations of two or more thereof, an alkali metal iodide, and an inorganic support material;
- said alkali metal iodide is potassium iodide and said inorganic support material is alumina;
- said catalyst composition contains about 0.05 to about 1 weight % palladium and about 0.05 to about 5 weight % potassium, and has a surface area of about 1 to about 200 m.sup.2 /g;
- said highly unsaturated hydrocarbon is selected from the group consisting of acetylene, propadiene, 1,3-butadiene, 1,3-pentadiene, 1,4-pentadiene, isoprene, 1,3-cyclopentadiene, dicyclopentadiene, and mixtures of two or more thereof;
- said process is carried out at a temperature in the range of about 30.degree. to about 200.degree. C. and under a pressure in the range of about 15 to about 2000 psig;
- and
- about 1 to about 2 moles of hydrogen are employed for each mole of said highly unsaturated hydrocarbon present.
Dependencies are inferred from the claim text.