负载在各种氧化物材料和SnO上的Ru催化剂的NO分解性能。
NO decomposition properties of Ru catalysts supported on various oxide materials and SnO.
作者信息
Hinokuma Satoshi, Iwasa Takeshi, Kon Yoshihiro, Taketsugu Tetsuya, Sato Kazuhiko
机构信息
Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Central 5-2, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan.
Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan.
出版信息
Sci Rep. 2020 Dec 10;10(1):21605. doi: 10.1038/s41598-020-78744-x.
Nitrous oxide (NO) is a stratospheric ozone depleting greenhouse gas that has global warming potential. As the catalytic decomposition of NO is one of the most promising techniques for NO emissions abatement, in this study, for this purpose the properties of Ru supported on various oxide materials were investigated under excess O conditions, and the identities of the NO adsorption species on the catalysts were confirmed. To clarify the correlation between the catalytic properties and NO decomposition activity, the supported Ru catalysts were characterised by means of powder X-ray diffraction, X-ray fluorescence measurements, energy-dispersive X-ray mapping and several gas sorption techniques. The results showed that the redox properties for Ru (RuO) at low temperature are closely associated with NO decomposition activity. The local structures, optimal Ru loading and NO adsorption species of the novel Ru/SnO catalysts were studied and they showed high activity for NO decomposition.
一氧化二氮（NO）是一种具有全球变暖潜能的平流层臭氧消耗温室气体。由于NO的催化分解是减少NO排放最具前景的技术之一，因此在本研究中，为此目的研究了在过量O条件下负载在各种氧化物材料上的Ru的性质，并确认了催化剂上NO吸附物种的身份。为了阐明催化性能与NO分解活性之间的相关性，通过粉末X射线衍射、X射线荧光测量、能量色散X射线映射和几种气体吸附技术对负载型Ru催化剂进行了表征。结果表明，低温下Ru（RuO）的氧化还原性质与NO分解活性密切相关。研究了新型Ru/SnO催化剂的局部结构、最佳Ru负载量和NO吸附物种，它们对NO分解表现出高活性。
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