Heteroatom-doped zeolites for bifunctional catalytic applications
AssigneeExxonMobil Technology and Engineering Company
InventorsTakayuki Iida, Jihad M. Dakka, Brandon M. Carcuffe, Aaron Peters
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Abstract
Provided herein are methods for hydroisomerization of a hydrocarbon feedstock comprising contacting the hydrocarbon feedstock with hydrogen and a catalyst to yield a hydrocarbon product having an increase in branched hydrocarbons relative to the hydrocarbon feedstock. The present catalysts comprise a heteroatom-doped Beta zeolite having a trivalent cation as a framework metal oxide, an extra-framework species comprised of cerium and/or cobalt, and from 0.01 to 1.5 wt. % of a group VIII or VIB metal, or a combination thereof.
Claims10
A method for hydroisomerization of a hydrocarbon feedstock comprising contacting the hydrocarbon feedstock with hydrogen and a catalyst to yield a hydrocarbon product having an increase in branched hydrocarbons relative to the hydrocarbon feedstock, wherein the catalyst comprises a heteroatom-doped Beta zeolite having a trivalent cation as a framework metal oxide, an extra-framework species comprised of cobalt, and from 0.01 to 1.5 wt. % of a group VIII or VIB metal, or a combination thereof, the hydrocarbon feedstock comprises C5-C30 normal paraffins and/or C5-C30 monobranched paraffins and the heteroatom-doped Beta zeolite is selective for n-heptane conversion, wherein the catalyst further comprises between 5 wt. % and 25 wt. % tungsten, between 40 wt. % and 70 wt. % zirconium, and a metal oxide binder.
The method of claim/wherein the one or more isomerization conditions comprise a temperature from 100° C. to 450° C., a pressure from 0 psig to 1000 psig, a WHSV from 0.1 hr−1 to 10 hr−1, and/or a hydrogen/hydrocarbon mole ratio from about 0.1 to about 100.
A method for hydroisomerization of a hydrocarbon feedstock comprising contacting the hydrocarbon feedstock with hydrogen and a catalyst to yield a hydrocarbon product having an increase in branched hydrocarbons relative to the hydrocarbon feedstock, wherein the catalyst comprises a heteroatom-doped Beta zeolite having a trivalent cation as a framework metal oxide, an extra-framework species comprised of cerium and from 0.01 to 1.5 wt. % of a group VIII or VIB metal, or a combination thereof, the hydrocarbon feedstock comprises C5-C30 normal paraffins and/or C5-C30 monobranched paraffins and the heteroatom-doped Beta zeolite selectively converts C5, C6 and C7 in the hydrocarbon feedstock.
Dependencies are inferred from the claim text.