New directions for the catalytic conversion of methane. Annual report, December 1990-November 1991
Technical Report
·
OSTI ID:5287815
The addition of chlorine via HCl to a Li(+)-MgO catalyst improves its activity for the oxidative coupling of methane and for the oxidative dehydrogenation (OXD) of ethane. The latter effect is responsible for the large ethylene-to-ethane ratios (>5) observed during the oxidative coupling reaction. During the OXD reaction at 620 deg C, an 80% conversion of C2H6 has been achieved with 77% selectivity to C2H4 after 40 h on stream. To attain these favorable results, the Cl/Li ratio must be > or = 0.9. The absolute amounts of Li and Cl are of secondary importance, although an excess amount of promoters may serve to replace that which is slowly lost during the reaction. In the presence of chlorine, LiCl is formed rather than Li2CO3. The carbonate phase spreads over the surface and presumably blocks active sites. The chlorine in the catalyst also modifies the gross basicity of the catalyst, thus making it less effective for the further oxidation of ethylene, which is the desired product.
- Research Organization:
- Texas A and M Univ., College Station, TX (United States). Dept. of Chemistry
- OSTI ID:
- 5287815
- Report Number(s):
- PB-92-172360/XAB; CNN: GRI-5086-260-1326
- Country of Publication:
- United States
- Language:
- English
Similar Records
New directions for the catalytic conversion of methane. Annual report, January-December 1990
The effect of chloride ions on a Li{sup +}-MgO catalyst for the oxidative dehydrogenation of ethane
Production of high-valued chemicals from natural gas and light hydrocarbons. Final report, January 1990-February 1991
Technical Report
·
Mon Dec 31 23:00:00 EST 1990
·
OSTI ID:5382909
The effect of chloride ions on a Li{sup +}-MgO catalyst for the oxidative dehydrogenation of ethane
Journal Article
·
Sat Dec 31 23:00:00 EST 1994
· Journal of Catalysis
·
OSTI ID:75803
Production of high-valued chemicals from natural gas and light hydrocarbons. Final report, January 1990-February 1991
Technical Report
·
Sat Jun 01 00:00:00 EDT 1991
·
OSTI ID:26327
Related Subjects
03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
ALKANES
ALKENES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHLORIDES
CHLORINE
CHLORINE COMPOUNDS
DEHYDROGENATION
ELEMENTS
ETHANE
ETHYLENE
HALIDES
HALOGEN COMPOUNDS
HALOGENS
HYDROCARBONS
KINETICS
LITHIUM
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM HALIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METALS
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PROMOTERS
REACTION KINETICS
REFORMER PROCESSES
SYNTHESIS
YIELDS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
ALKANES
ALKENES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHLORIDES
CHLORINE
CHLORINE COMPOUNDS
DEHYDROGENATION
ELEMENTS
ETHANE
ETHYLENE
HALIDES
HALOGEN COMPOUNDS
HALOGENS
HYDROCARBONS
KINETICS
LITHIUM
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM HALIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METALS
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PROMOTERS
REACTION KINETICS
REFORMER PROCESSES
SYNTHESIS
YIELDS