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Promotion by strontium fluoride of neodymium oxide catalysis of the oxidative coupling of methane

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Promotion by strontium fluoride of neodymium oxide catalysis of the oxidative coupling of methane.pdf (128.1Kb)
Date
1998
Author
Long, RQ
Wan, HL
万惠霖
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  • 化学化工-已发表论文 [14235]
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Abstract
Catalytic performance measurements showed that CH4 conversion and C-2 selectivity were higher over SrF2/Nd2O3 catalyst than over pure Nd2O3 for the oxidative coupling of methane (OCM). XRD indicated that there was some exchange of F- and O2-, leading to the formation of tetragonal and rhombohedral NdOF phases during the catalyst preparation. After a certain amount of SrF2 was added to Nd2O3, the increase in surface basicity and conductivity, as well as the role of F- on the dispersion of surface active sites, would be favourable to a decrease in the secondary deep oxidation of methyl radicals and C-2 hydrocarbons, giving improved C-2 selectivity. Since there is a certain correlation between methane conversion and C-2 selectivity for an oxygen-limited OChl reaction, methane conversion is also expected to increase with the increase in C-2 selectivity.
Citation
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS,1998,94(8):1129-1135
URI
http://dx.doi.org/doi:10.1039/A800367J
https://dspace.xmu.edu.cn/handle/2288/13368

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