Kinetics of the oxidative coupling of methane over 1 wt% Sr/La sub 2 O sub 3

Journal Article · Sat Oct 01 04:00:00 EDT 1988 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(88)90277-1· OSTI ID:6570280

Deboy, J M; Hicks, R F ^[1]

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1. W.R. Grace and Co., Columbia, MD (USA)

The reaction network has been determined for the oxidative coupling of methane over 1 wt% Sr/La{sub 2}O{sub 3} by varying the residence time at a fixed feed composition of 0.46 atm CH{sub 4}, 0.045 atm O{sub 2}, and 0.50 atm argon. Ethane and CO are the primary products of methane reaction. Ethylene is formed from ethane, while CO{sub 2} appears to form from CO. The preexponential factors and apparent activation energies, obtained in the internal from 700 to 750{degree}C, are A{sub CH{sub 4}} = 4.7 {times} 10{sup 8} (moles CH{sub 4} consumed/g hr), E{sub CH{sub 4}} = 39.4 (kcal/mole); A{sub C{sub 2}}{sub H{sub 6}} = 8.5 {times} 10{sup 7} (moles C{sub 2}H{sub 6} produced/g hr), E{sub C{sub 2}}{sub H{sub 6}} = 36.8 (kcal/mole); and A{sub CO{sub x}} = 13,600 (moles CO + CO{sub 2} produced/g hr), E{sub CO{sub x}} = 23.9 (kcal/mole). Substantial amounts of hydrogen are produced during the oxidative coupling of methane. The distribution of CO, CO{sub 2}, H{sub 2}, and H{sub 2}O in the product is controlled by the water gas shift equilibrium.

• OSTI ID: 6570280
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 113:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKALINE EARTH METALS
ALKANES
ALKENES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
ETHANE
ETHYLENE
FLUIDS
GASES
HYDROCARBONS
HYDROGEN
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
METALS
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
QUANTITY RATIO
RARE EARTH COMPOUNDS
STRONTIUM
SYNTHESIS
TIME DEPENDENCE
VAPORS
WATER GAS PROCESSES
WATER VAPOR