In order to develop new catalysts for the synergistic removal of volatile organic compounds(VOCs)and the rest of the pollutants in coal-fired flue gas,high entropy oxides(HEOs)are considered.However,HEO catalyst samples suffer from unfavorable phenomena such as low surface area and active site masking due to the high temperature conditions.Therefore,the catalysts that can treat with complex coal-fired flue gas are prepared through a ball milling process.The flue gas treatment simulation experiments are utilized to study the physicochemical effects of ball milling parameters on the catalysts,and their influences on o-xylene removal process when the catalysts are applied to the flue gas with complex components such as H2O and SO2).Results show that HEO samples modified by suitable ball milling conditions show significantly enhanced catalytic efficiency and enhanced anti-toxicity against multiple pollutants,showing no significant competitive adsorption.This is due to the exposure of diverse active sites,the increase of oxygen vacancies and the activation of lattice oxygen after ball milling.
关键词
高熵氧化物/球磨/催化氧化/烟气组分/邻二甲苯
Key words
high entropy oxides/ball milling/catalytic oxidation/flue gas fractions/o-xylene
维普
万方数据