Catalysts for conversion of methane to higher hydrocarbons

Patent · Tue Jan 05 04:00:00 EST 1993

OSTI ID:6314632

Siriwardane, R V

Catalysts for converting methane to higher hydrocarbons such as ethane and ethylene in the presence of oxygen at temperatures in the range of about 700 to 900 C are described. These catalysts comprise calcium oxide or gadolinium oxide respectively promoted with about 0.025-0.4 mole [ ] and about 0.1-0.7 mole sodium pyrophosphate. A preferred reaction temperature in a range of about 800 to 850 C with a preferred oxygen-to-methane ratio of about 2:1 provides an essentially constant C[sub 2] hydrocarbon yield in the range of about 12 to 19 percent over a period of time greater than about 20 hours.

• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 5177294; A
• Application Number: PPN: US 7-700290
• OSTI ID: 6314632
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
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10 SYNTHETIC FUELS
100200 -- Synthetic Fuels-- Production-- (1990-)
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKANES
ALKENES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CATALYSTS
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
ETHANE
ETHYLENE
GADOLINIUM COMPOUNDS
GADOLINIUM OXIDES
HYDROCARBONS
METHANE
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PROMOTERS
RARE EARTH COMPOUNDS
REFORMER PROCESSES
SODIUM COMPOUNDS
SODIUM PHOSPHATES
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
YIELDS