Catalysts for conversion of methane to higher hydrocarbons

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868626

Siriwardane, Ranjani V ^[1]

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1. Morgantown, WV

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.degree. to 900.degree. 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.degree. to 850.degree. 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.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5177294
• OSTI ID: 868626
• Country of Publication: United States
• Language: English

Related Subjects

catalysts
conversion
methane
hydrocarbons
converting
ethane
ethylene
presence
oxygen
temperatures
range
700
degree
900
described
comprise
calcium
oxide
gadolinium
respectively
promoted
025-0
mole
1-0
sodium
pyrophosphate
preferred
reaction
temperature
800
850
oxygen-to-methane
ratio
provides
essentially
constant
hydrocarbon
yield
12
19
percent
period
time
20
hours
calcium oxide
reaction temperature
essentially constant
gadolinium oxide
converting methane
/585/