화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.77, 118-127, September, 2019
DOI10.1016/j.jiec.2019.04.026  Export Citation
Effect of active metal loading on catalyst structure and performance in room temperature oxidation of acetone by ozone
M. Aghbolaghy1, M. Ghavami1, J. Soltan1, †, and N. Chen1, 2
  • 1Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK, S7N 5A9, Canada
  • 2Canadian Light Source Inc., University of Saskatchewan, 101 Perimeter Road, Saskatoon, SK, S7N 0X4, Canada
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Room temperature ozonation of gaseous acetone was performed using CoOx/g-alumina catalyst with different cobalt loadings. Turnover frequency of acetone removal increased by decreasing metal loading of the catalyst. A comprehensive catalyst characterization showed that variation in cobalt loading altered the local environment of cobalt. Enhanced performance of the catalysts with lower cobalt loadings were attributed to (a) increase in cobalt dispersion from 4% in Co10% to 16% in Co2.5% (b) decrease in oxidation state of cobalt from Co(II,III) to Co(II), which resulted in improved electron transferring ability and ozone utilization.
Keywords:Catalytic ozonation;Gas phase;Structural;EXAFS;XANES;VOC
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