Stable and efficient Ru/TiO2-ZrO2 catalysts for catalytic wet air oxidation of phenolsulfonic acid wastewater treatment

被引：0
|
作者：
Yang J. [1 ]
Geng L. [1 ]
Ye S. [1 ]
Xie J. [1 ]
Zhang N. [1 ]
Chen B. [1 ]
机构：
[1] College of Chemistry and Chemical Engineering, Xiamen University, Xiamen
来源：
Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 12期
关键词：
Catalytic wet air oxidation; Composite oxide support; Harmless treatment; Phenolsulfonic acid wastewater; Stability;
D O I：
10.11949/0438-1157.20200407
中图分类号：
学科分类号：
摘要：
Catalytic wet air oxidation (CWAO) technology can efficiently treat organic wastewater, but the performance of existing catalysts, especially its stability, is far from industrial applications. In this study, ZrO2 was used to modify TiO2 support to form the stable Ru/TiO2-ZrO2 catalysts. It was found that the Ru/TiO2-ZrO2 catalysts showed excellent performance for catalytic wet air oxidation of phenolsulfonic acid wastewater. They gave high total organic carbon (TOC) conversions (> 90%) and remained stable in 5 consecutive running in the Ti/Zr ratio range from 9: 1 to 7: 3. On the other hand, TOC conversion decreased from 99.1% to 65.3% in 5 consecutive cycles for the conventional Ru/TiO2 catalyst. The characterization results of XRD, BET, XPS, H2-TPR and ICP-OES indicated that ZrO2 can enter the lattice of TiO2 to form TiO2-ZrO2 solid solution, which prevented the transformation of TiO2 from anatase to rutile. In addition, the modification of ZrO2 strengthened the interaction between Ru and the support, which effectively inhibited the leaching of Ru metal. The stable support structure and good anti-loss performance are the main reasons for the excellent reaction performance of Ru/TiO2-ZrO2 catalyst. © 2020, Editorial Board of CIESC Journal. All right reserved.
引用
收藏
页码：5561 / 5567
页数：6
相关论文
共 30 条
  • [1] Lin S Q., Treatment technology of organic wastewater in chemical industry, Chemical Engineering Design Communications, 45, 1, (2019)
  • [2] Guo G Y, Liang Z Y, Han Y Y, Et al., Treatment of chemical wastewater by biological aerated filter, Environmental Protection of Oil and Gas Felds, 18, 2, pp. 22-24, (2008)
  • [3] Comninellis C., Electrocatalysis in the electrochemical conversion/combustion of organic pollutants for waste water treatment, Electrochemical Acta, 39, 11, pp. 1857-1862, (1994)
  • [4] Andreozzi R, Caprio V, Insola A, Et al., Advanced oxidation processes (AOP) for water purification and recovery, Catalysis Today, 53, 1, pp. 51-59, (1999)
  • [5] Aaron J J., Advanced oxidation processes in water/wastewater treatment: principles and applications. A review, Critical Reviews in Environmental Science and Technology, 44, 23, pp. 2577-2641, (2014)
  • [6] Comninelli S C, Kapalka A, Malato S, Et al., Advanced oxidation processes for water treatment: advances and trends for R& D, Journal of Chemical Technology & Biotechnology, 83, 6, pp. 769-776, (2008)
  • [7] Barbier J, Oliviero L, Renard B, Et al., Role of ceria-supported noble metal catalysts (Ru, Pd, Pt) in wet air oxidation of nitrogen and oxygen containing compounds, Topics in Catalysis, 33, 1, pp. 77-86, (2005)
  • [8] Luck F., Wet air oxidation: past, present and future, Catalysis Today, 53, 1, (1999)
  • [9] Hamoudi S, Larachi F, Sayari A., Wet oxidation of phenolic solutions over heterogeneous catalysts: degradation profile and catalyst behavior, Journal of Catalysis, 177, 2, pp. 247-258, (1998)
  • [10] Debellefontaine H, Chakchouk M, Foussard J N, Et al., Treatment of organic aqueous wastes: wet air oxidation and wet peroxide oxidation®, Environmental Pollution, 92, 2, pp. 155-164, (1996)
123