Promotional effect of iron oxide on the catalytic properties of Fe-MnOx/TiO2 (anatase) catalysts for the SCR reaction at low temperatures

Deng Shengcai; Zhuang Ke; Xu BolianDing YuanhuaYu LeiFan Yining

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Promotional effect of iron oxide on the catalytic properties of Fe-MnOx/TiO2 (anatase) catalysts for the SCR reaction at low temperatures

机译：促销氧化铁对催化的影响Fe-MnOx /二氧化钛(锐钛矿)催化剂的性质在SCR反应在低温下

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The surface interaction of an iron-improved MnOx/TiO2 (anatase) catalyst for the selective catalytic reduction of nitric oxide was studied through detailed experiments. It was found that iron improved the catalyst by regulating the degree of polymerization and the dispersion of Mn oxide species supported on the anatase surface, which was the key factor for both the SCR activity and the N-2 selectivity. The increased NO conversion was caused by the higher Mn oxide dispersion, while selectivity evaluation showed that N2O formation on the MnOx/TiO2 catalyst was much higher than that on the iron-improved catalyst. Isotopic labelling experiments using (NH3)-N-15 with NO indicated that NH was the key species for N2O generation. NH was easily generated on MnOx/TiO2 without iron, which had a higher oxidability than the iron-improved catalyst, as identified by H-2 temperature-programmed reduction experiments.

机译：iron-improved表面相互作用MnOx /二氧化钛(锐钛矿)选择性的催化剂催化还原一氧化氮的研究通过详细的实验。铁改善催化剂通过调节聚合度和Mn的色散支持锐钛矿表面氧化物种,的关键因素为可控硅活动与n -选择性。没有转换造成的高锰氧化物分散,而选择性评价显示一氧化二氮的形成在MnOx /二氧化钛催化剂比这更高的iron-improved催化剂。(NH3) -N-15没有表明,北半球是关键物种的一氧化二氮的一代。上生成MnOx /二氧化钛不含铁,这有一个可氧化性高于iron-improved催化剂,如被2程序升温还原实验。

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来源
《Catalysis science & technology》 |2016年第6期|1772-1778|共7页
作者
Deng Shengcai; Zhuang Ke; Xu BolianDing YuanhuaYu LeiFan Yining;
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作者单位

Nanjing Univ, Key Lab Mesoscop Chem MOE, Jiangsu Key Lab Vehicle Emiss Control, Jiangsu Prov Key Lab Nanotechnol,Sch Chem & Chem, Nanjing 210093, Jiangsu, Peoples R China;

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正文语种英语
中图分类
关键词
anatase; Iron; ferric oxideSelective catalytic reduction (SCR)Low temperatureDEGREE-OF-POLYMERIZATIONCatalystssurface interactionsnitrous oxideNOBELIUM;

机译：锐钛矿、铁、铁oxideSelective催化减少(SCR)低;

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Promotional effect of iron oxide on the catalytic properties of Fe-MnOx/TiO2 (anatase) catalysts for the SCR reaction at low temperatures

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