Direct conversion of methane to C sub 2 's and liquid fuels
The objectives of the project are to discover and evaluate novel catalytic systems for the conversion of methane or by-product light hydrocarbon gases either indirectly (through intermediate light gases rich in C{sub 2}'s) or directly to liquid hydrocarbon fuels, and to evaluate, from an engineering perspective, different conceptualized schemes. The approach is to carry out catalyst testing on several specific classes of potential catalysts for the conversion of methane selectively to C{sub 2} products. The behavior of alkaline earth/metal oxide/halide catalysts containing strontium was found to be different from the behavior of catalysts containing barium. Two approaches were pursued to avoid the heterogeneous/homogeneous mechanism in order to achieve higher C{sub 2} selectivity/methane conversion combinations. One approach was to eliminate or minimize the typical gas phase combustion chemistry and make more of the reaction occur on the surface of the catalyst by using silver. Another approach was to change the gas phase chemistry to depart from the typical combustion reaction network by using vapor-phase catalysts. The layered perovskite K{sub 2}La{sub 2}Ti{sub 3}O{sub 10} was further studied. Modifications of process and catalyst variables for LaCaMnCoO{sub 6} catalysts resulted in catalysts with superior performance. Results obtained with a literature catalyst Na{sub 2}CO{sub 3}/Pr{sub 6}O{sub 11} were better than those obtained with NaCO{sub 3}/Pr-Ce oxide or Na{sub 2}CO{sub 3}/Ag-Pr-Ce oxide. 52 refs., 15 figs., 9 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:
- 6166447
- Report Number(s):
- DOE/PC/79817-7; ON: DE91005872
- Country of Publication:
- United States
- Language:
- English
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Direct conversion of methane to C sub 2 's and liquid fuels
Direct conversion of methane to C sub 2 's and liquid fuels
Related Subjects
10 SYNTHETIC FUELS
ALUMINIUM OXIDES
CATALYTIC EFFECTS
BARIUM
CALCIUM OXIDES
COBALT OXIDES
ETHANE
YIELDS
ETHYLENE
LANTHANUM OXIDES
MANGANESE OXIDES
METHANE
CONVERSION
POTASSIUM OXIDES
SILVER
SODIUM CHLORIDES
STRONTIUM
TITANIUM OXIDES
CATALYST SUPPORTS
DEACTIVATION
LIQUID FUELS
MOLECULAR SIEVES
PEROVSKITES
PROGRESS REPORT
SODIUM CARBONATES
ADSORBENTS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
ALKANES
ALKENES
ALUMINIUM COMPOUNDS
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COBALT COMPOUNDS
DOCUMENT TYPES
ELEMENTS
FUELS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
LANTHANUM COMPOUNDS
MANGANESE COMPOUNDS
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
RARE EARTH COMPOUNDS
SODIUM COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
100200 - Synthetic Fuels- Production- (1990-)