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dc.contributor.authorWeng, WZ
dc.contributor.author翁维正
dc.contributor.authorChen, MS
dc.contributor.author陈明树
dc.contributor.authorWan, HL
dc.contributor.author万惠霖
dc.contributor.authorLiao, YY
dc.date.accessioned2012-07-26T00:54:12Z
dc.date.available2012-07-26T00:54:12Z
dc.date.issued1998
dc.identifier.citationCATALYSIS LETTERS,1998,53(1-2):43-50zh_CN
dc.identifier.issn1011-372X
dc.identifier.urihttp://dx.doi.org/doi:10.1023/A:1019037301983
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/13335
dc.description.abstractIn situ FTIR spectroscopy was used to characterize the oxygen adspecies and its reactivity with CH4 over LaOF and 15 mol% BaF2/LaOF catalysts at OCM temperature (750-800 degrees C). It was found that gas-phase oxygen was activated on the surface of LaOF and 15 mol% BaF2/LaOF, which had been pretreated under vacuum at 750 or 800 degrees C, forming O-2(-) species at high temperature (750-800 degrees C). At 750 degrees C, the adsorbed O-2(-) species can react with pure CH4 accompanied by formation of gas-phase C2H4 and CO2, and there is a good correlation between the rate of disappearance of surface O-2(-) and the rate of formation of gas-phase C2H4. The O-2(-) species was also observed over the catalysts under working condition, and it reacted with CH4 in a manner that was consistent with its role in a catalytic cycle. These results suggest that O-2(-) may be the active oxygen species for OCM reaction over these catalysts.zh_CN
dc.language.isoenzh_CN
dc.publisherBALTZER SCI PUBL BVzh_CN
dc.subjectin situ FTIRzh_CN
dc.subjectoxygen specieszh_CN
dc.subjectLaOFzh_CN
dc.subjectBaF2/LaOFzh_CN
dc.subjectmethane oxidative couplingzh_CN
dc.titleHigh-temperature in situ FTIR spectroscopy study of LaOF and BaF2/LaOF catalysts for methane oxidative couplingzh_CN
dc.typeArticlezh_CN


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