Citation: Shuang Wu, Xuebing Li, Xiangchen Fang, Yuanyuan Sun, Jing Sun, Mingdong Zhou, Shuliang Zang. NO reduction by CO over TiO₂-γ-Al₂O₃ supported In/Ag catalyst under lean burn conditions[J]. Chinese Journal of Catalysis, ;2016, 37(11): 2018-2024. doi: 10.1016/S1872-2067(16)62533-0 shu

NO reduction by CO over TiO₂-γ-Al₂O₃ supported In/Ag catalyst under lean burn conditions

a Department of Chemistry, East China Normal University, Shanghai 200062, China;
b School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, Liaoning, China;
c Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China;
d Fushun Research Institute of Petroleum and Petrochemicals, Sinopec Group, Fushun 113001, Liaoning, China

Received Date: 14 July 2016
Revised Date: 18 August 2016

Fund Project: This work was supported by the National Science & Technology Pillar Program (2012BAF03B02), National Natural Science Foundation of China (21101085, U1162203), Natural Science Foundation of Liaoning Province (2015020196), Doctoral Fund of Shandong Province (BS2015HZ003), Fushun Science & Technology Program (FSKJHT 201423), and Liaoning Excellent Talents Program in University (LJQ2012031).

TiO₂/γ-Al₂O₃ supported In/Ag catalysts were prepared by impregnation method, and investigated for NO reduction with CO as the reducing agent under lean burn conditions. The microscopic struc-ture and surface properties of the catalysts were studied by N₂ adsorption-desorption, X-ray diffrac-tion, transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet-visible spec-troscopy, H₂ temperature-programmed reduction and Fourier transform infrared spectroscopy. TiO₂/γ-Al₂O₃ supported In/Ag is a good catalyst for the reduction of NO to N₂. It displayed high dis-persion, large amounts of surface active components and high NO adsorption capacity, which gave good catalytic performance and stability for the reduction of NO with CO under lean burn condi-tions. The silver species stabilized and improved the dispersion of the indium species. The introduc-tion of TiO₂ into the γ-Al₂O₃ support promoted NO adsorption and improved the dispersion of the indium species and silver species.
- Nitrogen oxide reduction with carbon monoxide,
- Lean burn condition,
- Indium/silver bimetallic catalyst,
- Removal of nitrogen oxides
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NO reduction by CO over TiO₂-γ-Al₂O₃ supported In/Ag catalyst under lean burn conditions