载体热处理温度对Pt/FeOx催化HCHO氧化性能的影响

以不同温度热处理的FeOx-T为载体，采用胶体沉积法制备了一系列Pt/FeOx-T催化剂用于甲醛室温催化氧化。通过 XRD、BET、H2 -TPR、FTIR和TEM 对Pt/FeOx-T催化剂的结构进行表征，结果表明，热处理温度影响FeOx载体的比表面积、氧化还原性质和Pt/FeOx-T表面羟基的数量，以及Pt物种和FeOx载体之间的相互作用。活性测试表明，100?C热处理的FeOx为载体制备的1.5wt% Pt/FeOx-100催化剂具有较高的催化活性，在25?C，RH=55%的条件下，甲醛的转化率可达到96.2%。

Effect of thermal treatment temperature of support on Catalytic Performance of Pt/FeOx Catalysts for HCHO oxidation

A few FeOx following a thermal-treatment at different temperatures supported Pt catalysts (Pt/FeOx-T) were prepared by a facile colloid deposition method, and their catalytic properties were investigated in the oxidation of formaldehyde at ambient temperature. These catalysts were characterized by XRD, BET, H2-TPR, FTIR and TEM. The results showed the thermal treatment temperature could affect the BET surface area, oxidation-reduction property of FeOx, the amount of surface hydroxyls of Pt/FeOx and a strong interaction was observed between Pt species and FeOx. The activity test indicated that the optimal catalytic performance was obtained over 1.5wt% Pt/FeOx-100 showed the best catalytic performance, under the conditions of 25?C, the relative humidity of 55%, a gaseous hourly space velocity of 60 000 cm3g-1h-1, and the HCHO conversion was 96.2%.