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首页> 外文会议>EU-Korea Conference on Science and Technology >A Study on TiO_2 Nanoparticle-Supported Mn_2O_3Catalyst for Indoor Air Pollutants - Ozone and VOCDecomposition Reaction
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A Study on TiO_2 Nanoparticle-Supported Mn_2O_3Catalyst for Indoor Air Pollutants - Ozone and VOCDecomposition Reaction

机译：用于室内空气污染物的TiO_2纳米粒子支持的Mn_2O_3催化剂的研究 - 臭氧和Vocdecthion反应

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The catalytic conversion of toluene on MnO_x/TiO_2 catalysts was exam-ined in the presence of ozone. The MnOx/TiO_2 catalysts were prepared by a wet-impregnation method. A set amount of manganese acetate was dissolved in distilled water. The TiO_2 nanoparticles, as the support materials in this study, were synthesized by a thermal decomposition process. The generation of TiO_2nanopartides by the thermal decomposition of titanium tetraisopropoxide (TTIP) was carried out in an electric tune furnace. The TiO_2 nanoparticles were characterized by X-ray diffraction, Brunauer-Emmett-Teller measurements and transmission electron microscopy. Compared to the commercial photocatalyst (P25), the TiO_2 nanoparticles prepared at 900°C had a small particle size (10.5 nm), pure anatase phase and a high degree of crystallinity with a dense polyhedral structure. The concentration of toluene was varied in the range of 20-100 ppm and the ozone to toluene ratio was increased from 1.0 to 15.0. The reaction temperature was controlled between 25-100°C and the space velocity was fixed at 20000 h~(-1). The CO_x selectivity was enhanced considerably by the catalyst supported on TiO_2 (thermal decomposition process) after injecting ozone. The activity of the catalyst depended mainly on the support used. The catalyst synthesized by the thermal decomposition process was found to be the most active support.
机译：在臭氧存在下，在臭氧存在下在MNO_x / TiO_2催化剂上进行甲苯的催化转化。通过湿浸渍方法制备Mnox / TiO_2催化剂。将一定量的乙酸锰溶解在蒸馏水中。作为本研究中的载体材料的TiO_2纳米颗粒被热分解过程合成。通过钛四异丙氧化钛（TTIP）的热分解产生TiO_2NANOPARIPES在电动曲调炉中进行。通过X射线衍射，Brunauer-Emmett-Teller测量和透射电子显微镜表征TiO_2纳米颗粒。与商业光催化剂（P25）相比，在900℃下制备的TiO_2纳米颗粒具有小的粒度（10.5nm），纯锐钛矿相和高度结晶度，具有致密的多面体结构。甲苯的浓度在20-100ppm的范围内变化，臭氧从1.0〜15.0增加。将反应温度控制在25-100℃之间，并且在20000h〜（-1）下固定空速。通过在注射臭氧之后，通过在TiO_2（热分解过程）上负载的催化剂相当提高CO_X选择性。催化剂的活性主要依赖于所用载体。被热分解过程合成的催化剂被发现是最活跃的支持。

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