Hydrocarbon synthesis

Inactive Publication Date: 2005-02-17
REACTION 35 LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] The present invention addresses the need for an efficient way to convert methane and other hydrocarbons into higher hydrocarbons. In one embodiment, a hydrocarbon having a carbon number Cn, where n≧2, is prepared by allowing a reactant hydrocarbon having a carbon number Cm, where m<n, to react with a halogenating agent, thereby forming a halogenated hydrocarbon; allowing the halogenated hydrocarbon to contact a metal-oxygen cataloreactant, thereby forming a product hyd

Problems solved by technology

The light hydrocarbons can be recycled for further processing over the oxyhydrochlorination catalyst.” All of these techniques for making higher alkanes from C1 feedstocks suffer from the disadvantage that the hydrocarbon stream must be separated from an aqueous hydrohalic acid stream, and the hydrohalic acid stream must be recycled.
The process does not incorporate reactive neut

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034] Metal Oxide / Zeolite composite MZ1 was prepared as follows: A solid mixture of a ZSM-5-type zeolite (Zeolyst CBV 8014, Si / Al ratio=80, 10 g, 170 mmoles SiO2) and CaNO3 nonahydrate (9 g, =34 mmoles Ca) was prepared and water was added to incipient wetness. After CaNO3 dissolution and stirring, the slurry was dried and calcined in sequence at 115° C. (overnight) and 500° C. (overnight), respectively, in air.

example 2

[0035] Methane at 15 psia was bubbled through bromine at 1° C. at a rate of 5 cc / min. The resulting stream of bromine and methane (1:10 by mole) was passed through a small diameter bromination reactor at 450° C. (1000 h−1) and the mixture of CH4-xBrx (x=0, 1, 2, 3) passed into a reactor containing 5 g of metal oxide / zeolite composite MZ1 (400° C.). The output stream from the second reactor contained no brominated products. Based on the methane consumed in the bromination reactor, 10% ethylene, 31% propylene, 3% propane, and 21% butanes / butenes were detected; 65% overall. Trace amounts of C6 species were also detected. After reaction for 5 hours, during which the stream output did not change from the distribution described above, the methane stream was discontinued and the reactor was purged with helium at 5 cc / min for 10 minutes. After He purge, a flow of O2 (2 cc / min) into the second reactor was initiated at 525° C. to regenerate the metal oxide from the metal bromide of the partia...

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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.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) [0001] This application claims the benefit of U.S. Provisional Patent Application No. 60 / 487,364, filed Jul. 15, 2003.FIELD OF THE INVENTION [0002] This invention relates generally to hydrocarbon oligomerization, and more particularly to a method of making hydrocarbons using cataloreactants. BACKGROUND OF THE INVENTION [0003] Scientists have long sought efficient ways to convert methane and other alkanes into higher hydrocarbons, including light olefins and gasoline-range materials. Efficient processes could create value in a number of ways, including: facilitating the utilization of remotely located stranded natural gas through its conversion into more easily transportable liquid fuels and feedstocks, and allowing the use of inexpensive feedstocks (methane and other lower alkanes) for end products often made from higher alkanes, including ethylene and propylene. [0004] U.S. Pat. Nos. 6,486,368, 6,472,572, 6,465,699, 6,465,696, and 6,462,243...

Claims

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Application Information

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IPC IPC(8): C07C1/26
CPCC07C1/26C07C2521/10C07C2529/40C07C2529/18C07C2523/02C07C17/10Y10S585/935Y10S585/943Y02P20/52C07C19/075C07C11/04C07C11/06
Inventor LORKOVIC, IVAN M.NOY, MARIASHERMAN, JEFFREY H.WEISS, MICHAEL J.STUCKY, GALEN D.
Owner REACTION 35 LLC
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