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AssigneeExxonMobil Research and Engineering Company
InventorsBi-Zeng Zhan, Bjorn Moden, Jihad Dakka, Jose Santiesteban, Sebastian C. Reyes, Enrique Iglesia
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A process for the oxidation of hydrocarbons comprises contacting the hydrocarbon with an oxygen-containing gas in the presence of a catalyst comprising a microporous solid support, preferably a zeolite, having from 8- to 12-ring open windows and comprising non-framework metal cations selected from manganese, iron, cobalt, vanadium, chromium, copper, nickel, and ruthenium, and mixtures thereof, providing that the oxygen-containing gas does not contain significant amounts of added hydrogen. The catalyst is novel and forms part of the invention. The process may be used for oxidation of alkanes, cycloalkanes, benzene and alkylbenzenes, and is suitable for use in regioselective terminal oxidation of straight chain alkanes and for selective oxidation/separation of p-dialkylbenzenes from an alkylbenzene mixture, for example, p-xylene from an isomeric mixture of xylenes.
A process for selective oxidation of straight or branched-chain alkanes to produce an oxidation product comprising contacting the alkane in the liquid phase with a catalyst comprising a microporous solid support having 10-ring open windows and comprising non-framework metal cations selected from manganese, iron, cobalt, vanadium, chromium, copper, nickel, and ruthenium, and mixtures thereof, providing that the oxygen-containing gas does not contain significant amounts of added hydrogen, wherein the non-framework metal cations are incorporated into the microporous solid support by vapor deposition methods, and wherein the oxidation product comprises one or more terminal alcohols, terminal aldehydes, terminal carboxylic acids, ketones or combinations thereof, wherein the process is run in a batch mode or a continuous mode utilizing a fixed, fluidized or moving bed catalyst, and wherein the initial terminal regioselectivity is greater than or equal to about 10% and less than or equal to about 24%.
A process for selectively oxidizing a para-dialkylbenzene to produce an oxidation product comprising contacting the dialkylbenzene in the liquid phase with a catalyst comprising a microporous solid support having 10-ring open windows and comprising non-framework metal cations selected from manganese, iron, cobalt, vanadium, chromium, copper, nickel, ruthenium, and mixtures thereof, providing that the oxygen-containing gas does not contain significant amounts of added hydrogen, wherein the non-framework metal cations are incorporated into the microporous solid support by vapor deposition methods, and wherein the oxidation product comprises one or more terminal alcohols, terminal aldehydes, or terminal carboxylic acids, wherein the process is run in a batch mode or a continuous mode utilizing a fixed, fluidized or moving bed catalyst, and wherein the initial terminal regioselectivity is greater than or equal to about 10% and less than or equal to about 24%.
An oxidation catalyst for selective oxidation of straight or branched chain alkanes in the liquid phase comprising a microporous solid support having 10-ring open windows, comprising from about 0.01 to about 20 wt. % of non-framework manganese cations wherein the non-framework manganese cations are incorporated into the microporous solid support by vapor deposition methods, and wherein the initial terminal regioselectivity of the catalyst when oxidizing straight or branched chain alkanes is greater than or equal to about 10% and less than or equal to about 24%.
A method for producing an oxidation catalyst for selective oxidation of straight or branched chain alkanes in the liquid phase comprising providing a microporous solid support having 10-ring open windows, and vapor depositing on the microporous solid support from about 0.01 to about 20 wt. % of non-framework manganese cations, and wherein the initial terminal regioselectivity of the catalyst when oxidizing straight or branched chain alkanes is greater than or equal to about 10% and less than or equal to about 24%.
Dependencies are inferred from the claim text.