Isotopic labeling studies of C and O atoms for methane oxidative coupling over II-La2O2CO3

R. Paul Taylor; Glenn L. Schrader

doi:10.1016/S0167-2991(08)63871-9

Isotopic labeling studies of C and O atoms for methane oxidative coupling over II-La₂O₂CO₃

R. Paul Taylor, Glenn L. Schrader

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The role of II-La₂O₂CO₃ for the oxidative coupling of methane (OCM) was examined by determining the reactivity for the C and O atoms of the (CO₃)^2- groups of II-La₂O₂CO₃. ¹⁸O- and ¹³C-labeled materials were prepared for these studies. During OCM, the C atoms in the catalyst were the source of 46% of the CO₂ produced. No C atoms originating in the catalyst appeared in the hydrocarbon products. The O atoms present in the (CO₃)^2- layers of the catalyst also appeared in CO₂ and CO during OCM. ¹⁸O accounted for 48.5% of all oxygen detected in carbon dioxide produced over ¹⁸O-labeled phases. Oxygen exchange was observed to occur with O² in the feed.

Original language	English (US)
Pages (from-to)	235-240
Number of pages	6
Journal	Studies in Surface Science and Catalysis
Volume	81
Issue number	C
DOIs	https://doi.org/10.1016/S0167-2991(08)63871-9
State	Published - Jan 1 1994
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0167-2991(08)63871-9

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title = "Isotopic labeling studies of C and O atoms for methane oxidative coupling over II-La2O2CO3",

abstract = "The role of II-La2O2CO3 for the oxidative coupling of methane (OCM) was examined by determining the reactivity for the C and O atoms of the (CO3)2- groups of II-La2O2CO3. 18O- and 13C-labeled materials were prepared for these studies. During OCM, the C atoms in the catalyst were the source of 46% of the CO2 produced. No C atoms originating in the catalyst appeared in the hydrocarbon products. The O atoms present in the (CO3)2- layers of the catalyst also appeared in CO2 and CO during OCM. 18O accounted for 48.5% of all oxygen detected in carbon dioxide produced over 18O-labeled phases. Oxygen exchange was observed to occur with O2 in the feed.",

author = "Taylor, {R. Paul} and Schrader, {Glenn L.}",

note = "Funding Information: This work was sponsored by the Office of Basic Energy Sciences and was conducted through the Ames Laboratory which is operated for the U.S. Department of Energy by Iowa State University under contract W-7405-ENG-82.",

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doi = "10.1016/S0167-2991(08)63871-9",

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T1 - Isotopic labeling studies of C and O atoms for methane oxidative coupling over II-La2O2CO3

AU - Taylor, R. Paul

AU - Schrader, Glenn L.

N1 - Funding Information: This work was sponsored by the Office of Basic Energy Sciences and was conducted through the Ames Laboratory which is operated for the U.S. Department of Energy by Iowa State University under contract W-7405-ENG-82.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - The role of II-La2O2CO3 for the oxidative coupling of methane (OCM) was examined by determining the reactivity for the C and O atoms of the (CO3)2- groups of II-La2O2CO3. 18O- and 13C-labeled materials were prepared for these studies. During OCM, the C atoms in the catalyst were the source of 46% of the CO2 produced. No C atoms originating in the catalyst appeared in the hydrocarbon products. The O atoms present in the (CO3)2- layers of the catalyst also appeared in CO2 and CO during OCM. 18O accounted for 48.5% of all oxygen detected in carbon dioxide produced over 18O-labeled phases. Oxygen exchange was observed to occur with O2 in the feed.

AB - The role of II-La2O2CO3 for the oxidative coupling of methane (OCM) was examined by determining the reactivity for the C and O atoms of the (CO3)2- groups of II-La2O2CO3. 18O- and 13C-labeled materials were prepared for these studies. During OCM, the C atoms in the catalyst were the source of 46% of the CO2 produced. No C atoms originating in the catalyst appeared in the hydrocarbon products. The O atoms present in the (CO3)2- layers of the catalyst also appeared in CO2 and CO during OCM. 18O accounted for 48.5% of all oxygen detected in carbon dioxide produced over 18O-labeled phases. Oxygen exchange was observed to occur with O2 in the feed.

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JF - Studies in Surface Science and Catalysis

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Isotopic labeling studies of C and O atoms for methane oxidative coupling over II-La₂O₂CO₃

Abstract

ASJC Scopus subject areas

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