催化作用
氮氧化物
吸附
氧气
化学
色散(光学)
化学工程
氨
无机化学
无定形固体
有机化学
物理
光学
燃烧
工程类
作者
Yiqing Zeng,Weilong Rong,Shule Zhang,Qin Zhong,Zhaoxiang Zhong
出处
期刊:Fuel
[Elsevier]
日期:2024-02-01
卷期号:358: 130277-130277
标识
DOI:10.1016/j.fuel.2023.130277
摘要
Synergistic control of multiple pollutants has high benefits during the control of emissions from fuel utilization, and catalysis can contribute to efficient removal of multiple pollutants. In this work, Ti species regulated CuO/CeO2 (Cu/Ce) catalyst was constructed to efficient simultaneous NH3-SCR denitration and CO oxidation under oxygen-rich conditions. It is found that the introduction of Ti species into Cu/Ce catalyst induces the formation of three-dimensional pore structure and promotes the phase transition from crystalline to amorphous, which significantly enhances the specific surface area and the dispersion of CuO and CeO2. The well dispersed CuO and CeO2 species provide a larger number of adsorbed sites for CO and NO and enhance the Cu-Ce interaction, which can contribute to reducing the competitive adsorption between CO and NO and the formation of a richer surface oxygen vacancies. Owing to above improvements, the Ti species regulated Cu/Ce catalyst can achieve more than 90% removal efficiency of NOx and CO at 148–218 °C, and the active temperature windows widened by 36 °C in comparison with Cu/Ce catalyst. Through this work, we expect to shed some light on the synergistic control of CO and NOx under oxygen-rich conditions.
科研通智能强力驱动
Strongly Powered by AbleSci AI