Catalytic oxidation of methane over PdO in wire microcalorimetry

	Catalytic oxidation of methane over PdO in wire microcalorimetry
	Zhang TC(张泰昌); Xin YX; Ren ZY; Qi F; Law CK; Law, CK (reprint author), Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
发表期刊	COMBUSTION AND FLAME
	2013-01
卷号	160 期号:1 页码:149-154
ISSN	0010-2180
摘要	A two-dimensional model of a weakly buoyant flow over a horizontal wire with surface reaction was developed, using a literature mechanism, to simulate the heat release rate of the catalytic oxidation of methane (2 vol.% in air) over a Pd wire with a porous 1-2 mu m PdO surface layer, acquired by wire microcalorimetry over the temperature range of 600-770 K. The experimental and simulation results demonstrate that the catalytic oxidation is characterized by a low-temperature, reaction-controlled regime in which the internal pore surface is totally accessible to the reactions, and a high-temperature regime in which finite-rate pore diffusion also affects the overall heat release rate. Furthermore, the controlling reactions are identified to be the oxidative adsorption of methane, desorption of oxygen, and adsorption of oxygen, with the former two being facilitating and the last retarding. The reaction mechanism was modified using the response surface methodology and the experimental data in the low-temperature reaction-controlled regime, yielding satisfactory prediction of the global activation energy and identification of the role of oxygen coverage in the transition of the global activation energy.
关键词	Catalytic Oxidation Pd-based Catalyst Methane Combustion Mechanism
学科领域	流体力学
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000311771500015
项目资助者	Air Force Office of Scientific Research
课题组名称	LHD超声速燃烧
论文分区	一类
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47017
专题	高温气体动力学国家重点实验室
通讯作者	Law, CK (reprint author), Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
推荐引用方式 GB/T 7714	Zhang TC,Xin YX,Ren ZY,et al. Catalytic oxidation of methane over PdO in wire microcalorimetry[J]. COMBUSTION AND FLAME,2013,160,1,:149-154.
APA	Zhang TC,Xin YX,Ren ZY,Qi F,Law CK,&Law, CK .(2013).Catalytic oxidation of methane over PdO in wire microcalorimetry.COMBUSTION AND FLAME,160(1),149-154.
MLA	Zhang TC,et al."Catalytic oxidation of methane over PdO in wire microcalorimetry".COMBUSTION AND FLAME 160.1(2013):149-154.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
IMCAS-J2013-013.pdf（1342KB）			开放获取	--	浏览下载