QQ客服 官方微博 反馈留言

	In situ infrared Spectroscopy of active oxygen species for oxidative coupling of methane over BaF2/La2O3 catalyst
	Wang Lihua ; Yi Xiaodong ; Yi XD(伊晓东) ; Weng Weizheng ; Weng WZ(翁维正) ; Wan Huilin ; Wan HL(万惠霖)
	2007
关键词	isotopic exchange superoxide species infrared spectroscopy oxidative coupling methane barium fluoride lanthanum oxide
英文摘要	In situ IR spectroscopy was used to study the superoxide species (O-2(-)) for oxidative coupling of methane (OCM) over the BaF2,/La2O3 catalyst. After the pretreatment of the catalyst with O-2, the IR peak at 1108-1118 cm(-1) appeared, which was assigned to O-O bond stretching vibration in O-2(-) species. After the introduction Of 1802 isotope, the IR peak at 1.108-1118 cm-1 was weakened, and the absorption peaks appeared at 1086 and 1051 cm(-1), which was consistent with the assignment of the O-18O bond and O-18 O-18 bond stretching vibrations in the superoxide species, respectively. At 700 degrees C, the superoxide species could react with CH4, accompanied by the formation of gas phase C2H4. A good correlation between the rate of O-2 consumption and the rate of C2H4 formation was observed, so the superoxide species was believed to be responsible for the OCM reaction over the BaF2/La2O3 catalyst.
语种	英语
出版者	SCIENCE CHINA PRESS
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:CNKI:SUN:CHUA.0.2007-09-009]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Wang Lihua,Yi Xiaodong,Yi XD,et al. In situ infrared Spectroscopy of active oxygen species for oxidative coupling of methane over BaF2/La2O3 catalyst[J],2007.
APA	Wang Lihua.,Yi Xiaodong.,伊晓东.,Weng Weizheng.,翁维正.,...&万惠霖.(2007).In situ infrared Spectroscopy of active oxygen species for oxidative coupling of methane over BaF2/La2O3 catalyst..
MLA	Wang Lihua,et al."In situ infrared Spectroscopy of active oxygen species for oxidative coupling of methane over BaF2/La2O3 catalyst".(2007).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。