Pecchi G, Reyes P, Sanhueza P, Villaseñor J
Departamento de Físico-Química, Facultad de Ciencias Químicas, Universida de Conceptión, Chile.
Chemosphere. 2001 Apr;43(2):141-6. doi: 10.1016/s0045-6535(00)00265-4.
The photocatalytic degradation of pentachlorophenol (PCP) in aqueous solution was investigated using TiO2 catalysts. The samples were prepared by the sol-gel method using different gelation pH and different calcination temperatures. The solids were characterized by specific surface area, X-ray diffraction, UV-Vis absorbance, FTIR and pentachlorophenol adsorption. The catalytic activity of the solids was evaluated in a conventional photoreactor at 298 K using 30 ppm of pentachlorophenol. It was found that the reaction follows a first-order reaction and the kinetic constant values change slightly with the pH of gelation and more significantly with the calcination temperature.
使用二氧化钛催化剂研究了水溶液中五氯苯酚（PCP）的光催化降解。通过溶胶-凝胶法，利用不同的凝胶化pH值和不同的煅烧温度制备样品。通过比表面积、X射线衍射、紫外-可见吸收光谱、傅里叶变换红外光谱和五氯苯酚吸附对固体进行表征。在传统光反应器中，于298 K下使用30 ppm的五氯苯酚评估固体的催化活性。发现该反应遵循一级反应，动力学常数的值随凝胶化pH值略有变化，而随煅烧温度变化更显著。
