Hydrocarbon synthesis
AssigneesGRT, Inc., The Regents of the University of California
InventorsIvan M. Lorkovic, Maria Noy, Jeffrey H. Sherman, Michael J. Weiss, Galen D. Stucky
Life of this patent
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Abstract
A method of synthesizing hydrocarbons from smaller hydrocarbons includes the steps of hydrocarbon halogenation, simultaneous oligomerization and hydrogen halide neutralization, and product recovery, with a metal-oxygen cataloreactant used to facilitate carbon-carbon coupling. Treatment with air or oxygen liberates halogen and regenerates the cataloreactant.
Claims25
A method of making a hydrocarbon having a carbon number Cn, where n≧2, comprising:
- forming a halogenated hydrocarbon by allowing a reactant hydrocarbon having a carbon number Cm, where m<n, to react with a halogenating agent;
- forming a hydrogen halide and a product hydrocarbon having a carbon number Cn, where n≧2, by allowing the halogenated hydrocarbon to contact a metal-oxygen cataloreactant;
- trapping halogen from the hydrogen halide with the metal-oxygen cataloreactant;
- recovering the product hydrocarbon;
- and
- regenerating the metal-oxygen cataloreactant to recover the halogen.
A method of making a hydrocarbon having a carbon number Cn, where n≧2, comprising:
- forming hydrogen bromide and a brominated hydrocarbon by allowing a reactant hydrocarbon having a carbon number Cm, where m<n, to react with a brominating agent;
- forming a product hydrocarbon having a carbon number Cn, where n≧2, by allowing the brominated hydrocarbon to contact a metal-oxygen cataloreactant;
- trapping bromine from the hydrogen bromide with the metal-oxygen cataloreactant;
- recovering the product hydrocarbon;
- and
- regenerating the metal-oxygen cataloreactant to recover the bromine.
A method of making a hydrocarbon having a carbon number Cn, where n≧2, comprising:
- (i) forming a hydrogen halide and an alkyl halide by allowing a reactant alkane having a carbon number Cm, where m<n, to react with molecular halogen;
- (ii) forming a product hydrocarbon having a carbon number Cn, where n≧2, by allowing the alkyl halide to contact a metal-oxygen cataloreactant;
- (iii) trapping halogen from the hydrogen halide with the metal-oxygen cataloreactant;
- (iv) recovering the product hydrocarbon;
- and
- (v) regenerating the metal-oxygen cataloreactant with air or oxygen to recover the halogen.
A method of making a hydrocarbon having a carbon number Cn, where n≧2, comprising:
- (i) forming hydrogen bromide and an alkyl bromide by allowing methane to react with molecular bromine, at a temperature of from 20 to 900° C., a pressure of from 0.1 to 200 atm, and a methane-to-bromine ratio of from 1:10 to 100:1 by volume;
- (ii) forming a product hydrocarbon having a carbon number Cn, where n≧2, by allowing the alkyl bromide to contact a doped zeolite;
- (iii) trapping bromine from the hydrogen bromide with the doped zeolite;
- (iv) recovering the product hydrocarbon;
- and
- (v) regenerating the doped zeolite with air or oxygen to recover the bromine;
- wherein steps (i)-(v) occur in a zone reactor.
A method of making a product hydrocarbon comprising:
- reacting a halogenating agent with a reactant hydrocarbon having a carbon number Cm, where m<n, to form a halogenated hydrocarbon;
- contacting the halogenated hydrocarbon with a metal-oxygen cataloreactant to catalyze formation of a product hydrocarbon having a carbon number Cn, where n≧2, while halogenating the cataloreactant to form a halogenated cataloreactant;
- recovering the product hydrocarbon;
- reacting the halogenated cataloreactant with oxygen or air to regenerate the cataloreactant and form a molecular halogen;
- and
- recycling the molecular halogen as the halogenating agent to react with the reactant hydrocarbon.
Dependencies are inferred from the claim text.