Effects of doping ceria on flame quenching in a narrow channel with zirconia-based functional coatings

doi:10.1016/j.cej.2022.137216

GIEC OpenIR

	Effects of doping ceria on flame quenching in a narrow channel with zirconia-based functional coatings
	Li, Fan 1; Yang, Haolin1 ; Wang, Xiaohan1 ; Zhou, Yan 3; Deng, Runjie 1; Jin, Chuan 1; Jiang, Liqiao1 ; Zhu, Baozhong 2; Chen, Jiuyu 2; Sun, Yunlan 2
	2022-10-15
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	446 页码:19
通讯作者	Wang, Xiaohan(wangxh@ms.giec.ac.cn) ; Zhu, Baozhong(bzzhu@cczu.edu.cn)
摘要	Wall coating modification has been a potential solution to organize the combustion process in space-constrained system. For this purpose, CeO2 doping effects on the flame stability of premixed methane/air mixtures confined within an adjustable-gap narrow channel with coating ZrO2-based ceramics are experimentally investigated. A series of characterization means are utilized to analyze these prepared composite coatings. Results elaborate that the catalytic activities of CeO2-ZrO2 solid solution correlate with the ratio of CeO2 dopant in bulk. Phase structural stabilities can be strengthened through increasing the CeO2 content, which is due to the significant increase in the ratio of tetragonal phase to monoclinic phase of ZrO2. X-ray photoelectron spectroscopy and H2 temperature-programmed reduction analysis outcomes show that the concentration of formed oxygen vacancies increases significantly with richer CeO2 phase doped, which promotes the exaltation of lattice oxygen activity and fluidity. Flame quenching tests demonstrate that the wall surface temperature dependence of the quenching distance is changed substantially by doping CeO2 into the ZrO2 coating wall, eliminating the negative temperature effect observed for a pure ZrO2 case at the medium temperature ranges of 673-773 K. The cases of higherCeO2-content doping provide a lower flame quenching distance, especially at slightly fuel-rich conditions, which arises from the enhancement of the storage and release functions of highly active oxygen ions through Ce4+/Ce3+ redox cycles. Comparing of OH planar laser-induced fluorescence images near the extinction limit indicates that in addition to flow rate and air-fuel ratio, different coating materials also have dramatic effects on the post flame characteristic and flame oscillation. In general, this paper not only provides a good overview of the chemical interaction between the wall and flame, but also makes an implication for the design of high-stability small-scale combustors by reasonably manufacturing this type of CeO2-ZrO2 coating functional materials.
关键词	Ceria-doped zirconia coating Chemical interaction Structure-activity relationship Quenching distance Flame oscillation
DOI	10.1016/j.cej.2022.137216
关键词[WOS]	PREMIXED FLAME ; ELECTRICAL-CONDUCTIVITY ; METHANE COMBUSTION ; OXYGEN VACANCIES ; WALL SURFACE ; OXIDE ; OXIDATION ; HYDROGEN ; METAL ; STABILITY
收录类别	SCI
语种	英语
资助项目	R & D projects in key areas of Guangdong Province[2020B1111360004] ; Guangzhou Science and Technology Project[201903010019]
WOS研究方向	Engineering
项目资助者	R & D projects in key areas of Guangdong Province ; Guangzhou Science and Technology Project
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000817829900001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/36929
专题	中国科学院广州能源研究所
通讯作者	Wang, Xiaohan; Zhu, Baozhong
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Changzhou Univ, Sch Petr Engn, Changzhou 213164, Peoples R China 3.Liaoning Inst Light Ind, Shenyang 110033, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Li, Fan,Yang, Haolin,Wang, Xiaohan,et al. Effects of doping ceria on flame quenching in a narrow channel with zirconia-based functional coatings[J]. CHEMICAL ENGINEERING JOURNAL,2022,446:19.
APA	Li, Fan.,Yang, Haolin.,Wang, Xiaohan.,Zhou, Yan.,Deng, Runjie.,...&Sun, Yunlan.(2022).Effects of doping ceria on flame quenching in a narrow channel with zirconia-based functional coatings.CHEMICAL ENGINEERING JOURNAL,446,19.
MLA	Li, Fan,et al."Effects of doping ceria on flame quenching in a narrow channel with zirconia-based functional coatings".CHEMICAL ENGINEERING JOURNAL 446(2022):19.