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	Quinone mediated selective oxidation of methane over palladium
	An ZJ(安增建) ; Pan XL(潘秀莲) ; Liu XM(刘秀梅) ; Han XW(韩秀文) ; Bao XH(包信和)
	2008-07-13
会议名称	the 14th international congress on catalysis
会议日期	2008-7-13
会议地点	韩国
页码	273/1
通讯作者	包信和
中文摘要	selectice oxidation of methane to methanol is industrial significance. despite extensive efforts in the past decades, it is still a challenge in chemistry. compared to high-temperature conversion, metal-catallyzed oxidation in liquid phase at low temperatures (<250)seems to be a more promising route, because it usually gives a higher selectivity(>85%). we found that quinines (q) can be employed as efficient co-catalysts in the palladium catalyzed selective oxidation of methane to cf3cooch3 by o2in cf3cooh. in a homogeneously catalyzed reaction an electron-transfer chain was built based on three redox couples, i.e. pd2+/pd0, q/h2q, and no2/no. pd2+ was the catalyticallyactive center, oxidizing methane to cf3cooch3 forming pd0. the reduced pd0 was regenerated to pd2+ by q giving h2q. then no2 reacted with h2q to form q and no, which was reoxidized to no2 by o2. the turen over number (ton) based on pd2+ was 0.7h-1. in a heterogeneously catalyzed reaction over carbon supported pd(pd/c) an even higher ton of 86h-1 was obtained in the presence of tetrachloroquinone for the conversion of methane to cf3cooh3.
会议主办者	国际催化协会
学科主题	物理化学
语种	中文
内容类型	会议论文
源URL	[http://159.226.238.44/handle/321008/112942]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
推荐引用方式 GB/T 7714	An ZJ,Pan XL,Liu XM,et al. Quinone mediated selective oxidation of methane over palladium[C]. 见:the 14th international congress on catalysis. 韩国. 2008-7-13.

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