摘要
To improve the denitrification performance of carbon-based materials for sintering flue gas,we prepared a composite catalyst comprising coconut shell activated carbon(AC)modified by thermal oxidation air.The microstructure,the specific surface area,the pore volume,the crystal structure,and functional groups presented in the prepared Cu2O/AC catalysts were thoroughly characterized.By using scanning electron microscopy(SEM),nitrogen adsorption/desorption isotherms,Fourier-transform infrared(FTIR)spectroscopy and X-ray diffractometry(XRD),the effects of Cu2O loading and calcination temperature on Cu2O/AC catalysts were investigated at low temperature(150℃).The research shows that Cu on the Cu2O/AC catalyst is in the form of Cu2O with good crystalline performance and is spherical and uniformly dispersed on the AC surface.The loading of Cu2O increases the active sites and the specific surface area of the reaction gas contact,which is conducive to the rapid progress of the carbon monoxide selective catalytic reduction(CO-SCR)reaction.When the loading of Cu2O was 8%and the calcination temperature was 500℃,the removal rate of NOx facilitated by the Cu2O/AC catalyst reached 97.9%.These findings provide a theoretical basis for understanding the denitrification of sintering flue gas.
作者
汪德富
黄帮福
龙红明
施哲
刘兰鹏
李露
WANG Defu;HUANG Bangfu;LONG Hongming;SHI Zhe;LIU Lanpeng;LI Lu(Department of Metallurgical Engineering,Kunming University of Science and Technology,Kunming 650093,China;Key Laboratory of Clean Metallurgy of High-Efficiency and Complex Iron Resources of Yunnan Province,Kunming 650093,China;Key Laboratory of Metallurgical Emission Reduction&Resources Recycling,Anhui University of Technology,Ministry of Education,Ma'anshan 243002,China)
基金
Open Fund of Key Laboratory of Ministry of Education for Metallurgical Emission Reduction and Comprehensive Utilization of Resources,China(No.JKF19-08)
General Project of Science and Technology Plan of Yunnan Science and Technology Department,China(No.2019FB077)
Industrialization Cultivation Project of Scientific Research Fund of Yunnan Provincial Department of Education,China(No.2016CYH07)
Top Young Talents of Yunnan Ten Thousand Talents Plan,China(No.YNWR-QNBJ-2019-263)。