HZSM-5, Al2O3, TiO2 and SiO2 supported CeO2-ZrO2-CrOx catalysts were prepared by deposition-precipitation method and tested for deep catalytic oxidation of 1,2-dichloroethane (DCE), as one of the common chlorinated organic pollutants. All the catalysts were characterized by means of N2adsorption-desorption, X-ray photoelectron spectroscopy (XPS), ammonia-temperature- programmed desorption (NH3-TPD) and hydrogen temperature-programmed reduction (H2-TPR). The characterization results re-vealed that there was strongly synergistic effect between the oxidizability of CZCr species and the acidity of supports, which obvi-ously promoted the catalytic activity for DCE degradation. 20%CZCr/HZSM-5 showed the highest activity and good durability dur-ing the long-term continuous test. The catalytic activity decreased in the order: 20%CZCr/HZSM-5>CZCr>20%CZCr/TiO2> 20%CZCr/Al2O3>20%CZCr/SiO2.
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