Preparation and Performance of Carbon-Based Ce-Mn Catalysts for Efficient Degradation of Acetone at Low Temperatures

Tong Li, Zhibo Wang, Yue Shi and Xiaolong Yao ()
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Tong Li: School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
Zhibo Wang: School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
Yue Shi: School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
Xiaolong Yao: School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China

IJERPH, 2022, vol. 19, issue 24, 1-15

Abstract: Based on the porous carbon material from citric acid residue, catalysts of different Ce-Mn ratios were prepared with incipient-wetness impregnation (IWI) to delve into their acetone-degrading performance and relevant mechanisms. When the Ce-Mn molar ratio is 0.8, the prepared catalyst Ce 0.8 -Mn/AC shows abundant and uniformly dispersed Mn and Ce particles on the surface. The content of Mn and Ce on the Ce 0.8 -Mn/AC surface reaches 5.64% and 0.75%, respectively. At the acetone concentration of 238 mg/m 3 (100 ppm), the laws of acetone degradation in different catalysts at different catalyzing temperatures and with various oxygen concentrations were studied, and we found that the rate of acetone degradation by Ce 0.8 -Mn/AC can exceed 90% at 250 °C. Cerium oxide and manganese oxide are synergistic in the catalytic degradation of acetone. Adding cerium to manganese-based catalysts can increase the oxygen migration rate in the catalysts and thus raise the reduction rate of lattice oxygen in manganese oxide. The results offer new ideas and approaches for the efficient and comprehensive utilization of bio-fermentation by-products, and for the development of cheap and high degradation performance catalysts for acetone.

Keywords: acetone; Ce 0.8 -Mn/AC; efficient degradation; low temperatures (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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