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AssigneeThe United States of America as represented by the United States Department of Energy
InventorsKoppampatti R. Venkatesh, Jianli Hu, John W. Tierney, Irving Wender
Estimating the term…
A method of cracking a feedstock by contacting the feedstock with a metal-promoted anion-modified metal oxide catalyst in the presence of hydrogen gas. The metal oxide of the catalyst is one or more of ZrO2, HfO2, TiO2 and SnO2, and the feedstock is principally chains of at least 20 carbon atoms. The metal-promoted anion-modified metal oxide catalyst contains one or more of Pt, Ni, Pd, Rh, Ir, Ru, (Mn & Fe) or mixtures of them present between about 0.2% to about 15% by weight of the catalyst. The metal-promoted anion-modified metal oxide catalyst contains one or more of SO4, WO3, or mixtures of them present between about 0.5% to about 20% by weight of the catalyst.
A method of cracking and isomerizing a hydrocarbon feedstock comprising contacting the feedstock with a metal-promoted anion-modified metal oxide catalyst in the presence of hydrogen gas at a sufficient pressure and at a temperature from greater than about 300° C. to about 600° C. and for a time sufficient to crack and isomerize the feedstock, wherein the metal oxide of the catalyst is one or more of ZrO2, HfO2, TiO2 and SnO2, and wherein the anion is WO3 and the feedstock is principally hydrocarbon chains of at least 32 carbon atoms.
A method of cracking and isomerizing a hydrocarbon feedstock selected from hycarbon chains of C32 or higher and molecular weights greater than about 500 comprising contacting the feedstock with an anion-modified metal oxide catalyst wherein the metal oxide is selected from the group consisting of ZrO2, HfO2, TiO2 and mixtures thereof in the presence of hydrogen gas at a pressure of not less than about 100 psig (cold) at a temperature from greater than about 300° C. to about 600° C. and for a time sufficient to crack and isomerize the feedstock, wherein the anion is WO3 and the anion-modified metal oxide catalyst is promoted with Pt, Ni, Pd, Rh, Fr, Ru, and Mn and Fe in combination or mixtures thereof.
A method of cracking and isomerizing a hydrocarbon feedstock containing hydrocarbon chains of C32 or higher and selected from polyethylene, polypropylene, polystyrene, polyolefins, oxygenated polymers, waxes and mixtures thereof comprising contacting the feedstock with an anion-modified metal oxide catalyst promoted with Pt, Ni or mixtures thereof in the presence of hydrogen gas at an initial pressure of not less than about 100 psig at a temperature from greater than about 300° C. to less than about 600° C. and for a time sufficient to crack and isomerize the feedstock, wherein the metal oxide is one or more of ZrO2 and HfO2, and the metal oxide catalyst is modified with WO3.
A method of cracking and isomerizing a hydrocarbon feedstock which comprises contacting the feedstock with a catalyst in the presence of hydrogen gas at a sufficient pressure and at a temperature from greater than about 300° C. to about 600° C. and for a time sufficient to crack and isomerize the feedstock;
Dependencies are inferred from the claim text.