Direct conversion of methane to C sub 2 's and liquid fuels

Technical Report · Wed Feb 14 00:00:00 EST 1990

DOI:https://doi.org/10.2172/6307190· OSTI ID:6307190

Warren, B K; Campbell, K D; Matherne, J L

Research on promoted metal oxide catalysts has continued with the study of alkaline earth/metal oxide halide catalysts. A barium bromide/alumina catalyst was comparable in methane conversion and selectivity to C{sub 2}'s to barium chloride/alumina catalysts. The effects of varying methane to oxygen feed ratios were explored for one of the best alkaline earth catalysts and one of the best literature catalysts (Li/MgO). A significant decrease in the selectivity to C{sub 2}'s is observed upon addition of ethane to the feed gas (feed gas methane/ethane ratio of 3). This observation demonstrates that a significant amount of ethane should not be recycled during methane oxidation over these types of catalysts under process conditions used. Methane oxidation over barium carbonate alone results in high enough selectivities and methane conversions to suggest an oxidized barium species may be responsible for methane oxidation on barium/metal oxide catalysts. Methane coupling studies have continued using layered perovskite catalysts in the cofeed mode and double perovskite catalysts in the sequential mode. Addition of sodium to the double perovskite LaCaMnCoO{sub 6} resulted in a catalyst with improved selectivity over the one without sodium. A reactor system containing two reactors in under construction. These reactors will be used to study different feed diluents, including steam. One reactor will be used to study the effects of pressure on the reaction. Process economics were explored for a hypothetical methane coupling scheme employing a feed mixture of 7/2/1 nitrogen/methane/oxygen. Economic evaluations of the first two of a series of cases based on extrapolations of Union Carbide methane coupling results have been completed. 33 refs., 17 figs., 2 tabs.

• Research Organization: Union Carbide Chemical and Plastics Co., Inc., South Charleston, WV (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-87PC79817
• OSTI ID: 6307190
• Report Number(s): DOE/PC/79817-6; ON: DE91005729
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
10 SYNTHETIC FUELS
ALUMINIUM OXIDES
CATALYTIC EFFECTS
BARIUM BROMIDES
BARIUM CHLORIDES
CALCIUM OXIDES
CERIUM
COBALT OXIDES
LANTHANUM OXIDES
LITHIUM
MAGNESIUM OXIDES
MANGANESE
METHANE
CONVERSION
PRASEODYMIUM
SILICA
SODIUM
CATALYSTS
COMPILED DATA
ECONOMIC ANALYSIS
ETHANE
ETHYLENE
LIQUID FUELS
PEROVSKITES
PROGRESS REPORT
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
ALKANES
ALKENES
ALUMINIUM COMPOUNDS
BARIUM COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COBALT COMPOUNDS
DATA
DOCUMENT TYPES
ECONOMICS
ELEMENTS
FUELS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
INFORMATION
LANTHANUM COMPOUNDS
MAGNESIUM COMPOUNDS
METALS
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
RARE EARTHS
SILICON COMPOUNDS
SILICON OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
010408* - Coal
Lignite
& Peat- C1 Processes- (1987-)
100200 - Synthetic Fuels- Production- (1990-)