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	Effects of baria on propane oxidation activity of Pd/Al_2O_3 catalyst:Pd–BaO interaction and reaction routes
	Min Li ; Xiaodong Wu ; Shuang Liu ; Jie Wan ; Rui Ran ; Duan Weng ; Min Li ; Xiaodong Wu ; Shuang Liu ; Jie Wan ; Rui Ran ; Duan Weng
	2016-03-30 ; 2016-03-30
关键词	Pd/Al2O3 C3H8combustion Hydrothermal aging BaO modification Surface PdO content O643.36
其他题名	Effects of baria on propane oxidation activity of Pd/Al_2O_3 catalyst:Pd–BaO interaction and reaction routes
中文摘要	The BaO-modified Pd/Al2O3exhibits much better catalytic activity than Pd/Al2O3for C3H8 oxidation both before and after the hydrothermal aging treatment. Further studies ascribe its good activity to the influence of BaO species on the physicochemical characteristics of the catalyst and the reaction routes. Firstly, the BaO species inhibits the phase transformation of alumina, resulting in higher surface area of the catalysts and hereby a better dispersion of Pd. Secondly, the basic nature and electron-withdrawing effect of barium oxide maintain palladium at high oxidation state, which leads to a higher PdO content on surface of the BaO-modified catalyst. Finally, the formation/decomposition of carbonate/bicarbonate species can be promoted by the addition of BaO, which provide extra reaction routes and are important for the deep oxidation of C3H8.; The BaO-modified Pd/Al2O3exhibits much better catalytic activity than Pd/Al2O3for C3H8 oxidation both before and after the hydrothermal aging treatment. Further studies ascribe its good activity to the influence of BaO species on the physicochemical characteristics of the catalyst and the reaction routes. Firstly, the BaO species inhibits the phase transformation of alumina, resulting in higher surface area of the catalysts and hereby a better dispersion of Pd. Secondly, the basic nature and electron-withdrawing effect of barium oxide maintain palladium at high oxidation state, which leads to a higher PdO content on surface of the BaO-modified catalyst. Finally, the formation/decomposition of carbonate/bicarbonate species can be promoted by the addition of BaO, which provide extra reaction routes and are important for the deep oxidation of C3H8.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/141695]
专题	清华大学
推荐引用方式 GB/T 7714	Min Li,Xiaodong Wu,Shuang Liu,et al. Effects of baria on propane oxidation activity of Pd/Al_2O_3 catalyst:Pd–BaO interaction and reaction routes[J],2016, 2016.
APA	Min Li.,Xiaodong Wu.,Shuang Liu.,Jie Wan.,Rui Ran.,...&Duan Weng.(2016).Effects of baria on propane oxidation activity of Pd/Al_2O_3 catalyst:Pd–BaO interaction and reaction routes..
MLA	Min Li,et al."Effects of baria on propane oxidation activity of Pd/Al_2O_3 catalyst:Pd–BaO interaction and reaction routes".(2016).

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