Heteroatom-doped zeolites for bifunctional catalytic applications
AssigneeExxonMobil Technology and Engineering Company
InventorsTakayuki Iida, Jihad M. Dakka, Brandon M. Carcuffe, Aaron Peters
Life of this patent
Estimating the term…
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.
Claims7
A method of synthesizing a heteroatom doped-Beta zeolite comprising oligomeric cerium oxide and/or oligomeric cobalt oxide as an extra-framework species, the method comprising crystalizing a reaction mixture comprising water, SiO2, a framework metal oxide, wherein the reaction mixture comprises:
- a molar ratio of structure directing agent cation, Q, to SiO2 in the reaction mixture of 0 to 4;
- a molar ratio of SiO2 to framework metal oxide in said reaction mixture of greater than 10;
- a molar ratio of water to SiO2 in the reaction mixture of greater than 0;
- a molar ratio of alkali metal M to SiO2 in the reaction mixture of from 0 to 1;
- and
- a molar ratio of SiO2 to Al source in the reaction mixture of greater than 5,
- the method further comprising adding about 0.01 to about 1.5 wt % Pt to the heteroatom doped-Beta zeolite.
A composition comprising a Beta zeolite having extra-framework species of oligomeric cerium oxide and/or oligomeric cobalt oxide, and from about 0.01 to about 1.5 wt. % of Pt.
Dependencies are inferred from the claim text.