Passive NO Adsorption on Hydrothermally Aged Pd-Based Small-Pore Zeolites

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	Passive NO Adsorption on Hydrothermally Aged Pd-Based Small-Pore Zeolites
	Shan, Yulong; Sun, Yu; Li, Yaobin; Shi, Xiaoyan; Shan, Wenpo; Yu, Yunbo; He, Hong
刊名	TOPICS IN CATALYSIS
	2020-09
卷号	63 期号:9-10 页码:944-953
关键词	Passive NO adsorption Pd-based zeolites Small-pore zeolites AEI zeolite Hydrothermal aging
ISSN号	1022-5528
英文摘要	Pd-based small-pore zeolites with different framework structures (AEI, CHA and RTH) were synthesized by a facile incipient wetness impregnation method. The zeolites were utilized as low-temperature passive NO(x)adsorbers (PNA) for NO(x)storage before and after hydrothermal aging. It was found that 1 wt% Pd/AEI showed better PNA behavior than the 1 wt% Pd/CHA and Pd/RTH samples, regardless of hydrothermal aging at 750 and 800 celcius. The AEI zeolite has a three-dimensional but tortuous pore channel structure, which accelerated Pd dispersion at 750 celcius but inhibited Pd aggregation at 800 celcius when subjected to hydrothermal aging. Pd/CHA showed a slight increase in Pd dispersion at 750 celcius, but extensive Pd aggregation at 800 celcius due to its straight and unhindered three-dimensional pore structure. The Pd species in Pd/RTH zeolite were prone to accumulation during hydrothermal aging due to the two-dimensional pore structure. Therefore, Pd/AEI can be utilized as an efficient and stable PNA after activation by mild hydrothermal aging treatment.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45093]
专题	生态环境研究中心_大气污染控制中心
推荐引用方式 GB/T 7714	Shan, Yulong,Sun, Yu,Li, Yaobin,et al. Passive NO Adsorption on Hydrothermally Aged Pd-Based Small-Pore Zeolites[J]. TOPICS IN CATALYSIS,2020,63(9-10):944-953.
APA	Shan, Yulong.,Sun, Yu.,Li, Yaobin.,Shi, Xiaoyan.,Shan, Wenpo.,...&He, Hong.(2020).Passive NO Adsorption on Hydrothermally Aged Pd-Based Small-Pore Zeolites.TOPICS IN CATALYSIS,63(9-10),944-953.
MLA	Shan, Yulong,et al."Passive NO Adsorption on Hydrothermally Aged Pd-Based Small-Pore Zeolites".TOPICS IN CATALYSIS 63.9-10(2020):944-953.