Abstract
The reactivity of pure and sodium-promoted calcium oxide catalysts toward the oxidative coupling of methane at 640°C has been investigated. While the pure calcium oxide was essentially a combustion catalyst, sodium-promoted calcium oxide exhibited significant C2 productivity. Study of the deactivation of both pure and promoted catalysts demonstrated that the presence of calcium oxide was necessary for both catalysts to be active. This observation, combined with the effects of sodium doping on C2 selectivity, suggests that the active phase on Na/CaO catalysts toward C2 formation consists of sodium species associated with calcium oxide. This active phase was destroyed when calcium oxide was converted into calcium carbonate under reaction conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 264-274 |
| Number of pages | 11 |
| Journal | Journal of Catalysis |
| Volume | 128 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1991 |
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ASJC Scopus subject areas
- Catalysis
- Process Chemistry and Technology
Cite this
The active phase in sodium-doped calcium oxide catalysts for oxidative coupling of methane. / Peng, X. D.; Stair, Peter C.
In: Journal of Catalysis, Vol. 128, No. 1, 1991, p. 264-274.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The active phase in sodium-doped calcium oxide catalysts for oxidative coupling of methane
AU - Peng, X. D.
AU - Stair, Peter C
PY - 1991
Y1 - 1991
N2 - The reactivity of pure and sodium-promoted calcium oxide catalysts toward the oxidative coupling of methane at 640°C has been investigated. While the pure calcium oxide was essentially a combustion catalyst, sodium-promoted calcium oxide exhibited significant C2 productivity. Study of the deactivation of both pure and promoted catalysts demonstrated that the presence of calcium oxide was necessary for both catalysts to be active. This observation, combined with the effects of sodium doping on C2 selectivity, suggests that the active phase on Na/CaO catalysts toward C2 formation consists of sodium species associated with calcium oxide. This active phase was destroyed when calcium oxide was converted into calcium carbonate under reaction conditions.
AB - The reactivity of pure and sodium-promoted calcium oxide catalysts toward the oxidative coupling of methane at 640°C has been investigated. While the pure calcium oxide was essentially a combustion catalyst, sodium-promoted calcium oxide exhibited significant C2 productivity. Study of the deactivation of both pure and promoted catalysts demonstrated that the presence of calcium oxide was necessary for both catalysts to be active. This observation, combined with the effects of sodium doping on C2 selectivity, suggests that the active phase on Na/CaO catalysts toward C2 formation consists of sodium species associated with calcium oxide. This active phase was destroyed when calcium oxide was converted into calcium carbonate under reaction conditions.
UR - http://www.scopus.com/inward/record.url?scp=0009293828&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0009293828&partnerID=8YFLogxK
U2 - 10.1016/0021-9517(91)90082-F
DO - 10.1016/0021-9517(91)90082-F
M3 - Article
VL - 128
SP - 264
EP - 274
JO - Journal of Catalysis
JF - Journal of Catalysis
SN - 0021-9517
IS - 1
ER -