燃料化学学报2018，Vol.46Issue(3)：375-384,10.
钴掺杂的铁酸铋催化PMS氧化单质汞的实验研究
Removal of elemental mercury in flue gas with PMS solution catalyzed by Co doped BiFeO3
摘要
Abstract
A aseries of Co-doped BiFeO3 magnetic catalysts(BiFe1-xCoxO3,x=5%-20%) were synthesized by the tartaric acid sol-gel method, and the prepared catalysts were characterized using X-ray powder diffraction (XRD), Brunauer Emmett Teller (BET) technique, vibration sample magnetometer (VSM) and X ray photoelectron spectroscopy(XPS). The catalytic activity of Co doped BiFeO3 to activate Peroxymonosulfate (PMS) was evaluated at a self-designed bubbling reactor. The effects of Co ration in catalyst, dosage of the catalyst,PMS concentration,and solution pH and reaction temperature on the removal of elemental mercury were investigated systematically, and the optimum conditions were obtained. The result indicates that the average removal efficiency of elemental mercury reaches 89.36% within 100 min under the following condition:70℃, 10% doping Co,3.9 mmol/L PMS concentration,0.5 g/L catalyst dosage and pH 8. Moreover,it is testified that SO·-4 and·OH are the active species when Hg0 is oxidized to Hg2+,where the tert-butyl alcohol and ethyl alcohol are used as quenchers. Finally,the mechanisms of mercury removal with PMS solution catalyzed by BiFe0.9Co0.1O3 are speculated on the basis of XPS results.关键词
过一硫酸氢钾/钴掺杂铁酸铋/硫酸自由基/汞Key words
peroxymonosulfate/Co doped BiFeO3/sulfate radical/mercury分类
资源环境引用本文复制引用
马宵颖,赵毅,许佩瑶,马双忱..钴掺杂的铁酸铋催化PMS氧化单质汞的实验研究[J].燃料化学学报,2018,46(3):375-384,10.基金项目
The project was supported by Fundamental Research Funds for the Central Universities(2014ZD41),National Science-Technology Support Plan of China(2014BAC23B04-06)and Beijing Major Scientific and Technological Achievement Transformation Project of China(Z151100002815012).中央高校基本科研业务费重点项目(2014ZD41),国家科技部资助项目(2014BAC23B04-06)和北京重大科技成果转化项目(Z151100002815012)资助 （2014ZD41）
