Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China.
J Hazard Mater. 2013 Jan 15;244-245:478-88. doi: 10.1016/j.jhazmat.2012.10.069. Epub 2012 Nov 5.
The catalyst Ru/TiZrO(4) was applied in the degradation of Isophorone by catalytic wet air oxidation. Mathematical models for the effects of reaction conditions on the Isophorone degradation by catalytic wet air oxidation were developed using a response surface methodology. A model was obtained for each response with multiple regression analysis and then was refined. Analysis of variance revealed that the models developed were adequate. The validity of the models was also verified by experimental data. Analysis of response surface showed that total organic carbon removal and Isophorone conversion were significantly affected (P≤0.01) by reaction time, temperature and their interactions, and affected (P≤0.05) by the square of reaction time. The point of zero charge of Ru/TiZrO(4) catalyst was about 1.72. The total organic carbon removal and Isophorone conversion had a great association with the zeta potential of Ru/TiZrO(4) catalyst. Finally, the degradation pathway of Isophorone in catalytic wet air oxidation was proposed. Within 410 h, the total organic carbon removal remained above 95%, indicating that the Ru/TiZrO(4) catalyst had a good stability.
将 Ru/TiZrO(4) 催化剂应用于异佛尔酮的催化湿式氧化降解中。采用响应面法建立了反应条件对异佛尔酮催化湿式氧化降解影响的数学模型。通过多元回归分析得到了每个响应的模型，然后进行了改进。方差分析表明，所建立的模型是充分的。通过实验数据验证了模型的有效性。响应面分析表明，总有机碳去除率和异佛尔酮转化率受反应时间、温度及其交互作用的显著影响（P≤0.01），受反应时间平方的影响（P≤0.05）。Ru/TiZrO(4)催化剂的等电点约为 1.72。总有机碳去除率和异佛尔酮转化率与 Ru/TiZrO(4)催化剂的动电电势有很大的关系。最后，提出了异佛尔酮在催化湿式氧化中的降解途径。在 410 h 内，总有机碳去除率保持在 95%以上，表明 Ru/TiZrO(4)催化剂具有良好的稳定性。
