论文部分内容阅读
采用溶胶凝胶法制备了N-Fe掺杂TiO2催化剂.用X光电子能谱(XPS),紫外漫反射(DRS)等方法对其进行表征.以丙酮为催化底物,测试了N-Fe掺杂TiO2催化剂分别在可见光和紫外光照射下对丙酮光催化消除反应的反应性能.结果表明:在反应温度为66℃,0.15 g的催化剂上,在可见光照下可将初始浓度为0.76 g/m3,流速为10 mL/min的丙酮100%消除;在反应温度为50℃,紫外光照射下可将初始浓度为0.89 g/m3,流速为15 mL/min的丙酮100%消除.并研究了N-Fe掺杂TiO2催化剂紫外光催化消除丙酮反应的动力学,确认光催化反应为一级动力学反应,在反应温度范围内得光催化反应的Ea=18.17kJ/mol,相关系数R2=0.99309.
N-Fe-doped TiO2 catalysts were prepared by sol-gel method and characterized by X-ray photoelectron spectroscopy (XPS) and ultraviolet diffuse reflectance spectroscopy (DRS) The results showed that the initial concentration of photocatalyst was 0.76 g / m3 under visible light irradiation when the reaction temperature was 66 ℃ and 0.15 g, respectively. 100% acetone with the flow rate of 10 mL / min was eliminated.The acetone with the initial concentration of 0.89 g / m3 and the flow rate of 15 mL / min was eliminated by UV irradiation at the temperature of 50 ℃ .And N -Fe doped TiO2 catalyst to eliminate the kinetics of acetone reaction. The first-order kinetic reaction of photocatalytic reaction was confirmed. The photocatalytic reaction Ea was 18.17kJ / mol and the correlation coefficient R2 was 0.99309 in the reaction temperature range.