CHARACTERIZATION OF CaO-CuO-CeO2 MIXED OXIDE SYNTHESIZED BY THE IMPREGNATION AND INVESTIGATION OF ITS REUSABILITY

Authors

  • Hoang Thi Huong Hue Institute of Environmental Technology, Vietnam Academy of Science and Technology
  • Nguyen Van Quang Faculty of Chemistry, University of Science, Vietnam National University, Hanoi
  • Nguyen Thi Anh Institute of Environmental Technology, Vietnam Academy of Science and Technology

DOI:

https://doi.org/10.15625/2525-2518/55/4/8952

Keywords:

CaO-CuO-CeO2 mixed oxide, phenol oxidation, impregnation method

Abstract

CaO-CuO-CeO2 mixed oxide was prepared by the impregnation method and used as the catalyst for the complete decomposition of phenol in the presence of hydrogen peroxide. TheĀ  CaO-CuO-CeO2 mixed oxide were characterized by XRD, SEM, BET, H2-TPR and Raman spectroscopy. The results indicated that there were three CuO species in the mixed oxide: the finely dispersed CuO species on the surface of CeO2, the Ce1-x-yCuxCayO2-dsolid solution and the bulk CuO. Most of particles have clear morphology with relatively uniform size in the range of 30 - 50 nm and the BET surface area was 37.96 m2/g. After three times of use, the catalytic activity of CaO-CuO-CeO2 mixed oxide was still relatively high and much higher than the mixed oxide CaO-CeO2 and CuO-CeO2.

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Published

14-08-2017

Issue

Section

Materials