Kim Sang Chai, Moon Ju Hun
Department of Environmental Education, Mokpo National University, Muan 534-729, Korea.
J Nanosci Nanotechnol. 2011 Feb;11(2):1660-3. doi: 10.1166/jnn.2011.3304.
Catalytic oxidation of VOC (toluene) over a copper based catalyst was carried out to assess its properties and performance. The Brunauer Emmett Teller (BET) method, X-ray diffraction (XRD), temperature programmed reduction (TPR), N2O pulse titration and energy dispersive spectroscopy (EDS) were used to characterize a series of 5 wt% Cu/gamma-Al2O3 catalysts modified with silver. The experimental results revealed that the addition of silver to 5 wt% Cu/gamma-Al2O3 catalyst highly enhanced its catalytic activity. With increasing addition amount of silver, the light-off curve for complete oxidation of toluene shifted to lower temperature. In addition, the increase of the addition amount of silver caused the copper particle size of 5 wt% Cu/gamma-Al2O3 catalyst to gradually increase. Subsequently, it demonstrated that the increase in the copper particle size is closely associated with the increase in catalytic activity.
对基于铜的催化剂上挥发性有机化合物（甲苯）的催化氧化进行了研究，以评估其性能。采用布鲁诺尔-埃米特-泰勒（BET）法、X射线衍射（XRD）、程序升温还原（TPR）、N2O脉冲滴定和能量色散光谱（EDS）对一系列用银改性的5 wt% Cu/γ-Al2O3催化剂进行了表征。实验结果表明，向5 wt% Cu/γ-Al2O3催化剂中添加银可显著提高其催化活性。随着银添加量的增加，甲苯完全氧化的起燃曲线向低温方向移动。此外，银添加量的增加导致5 wt% Cu/γ-Al2O3催化剂的铜粒径逐渐增大。随后表明，铜粒径的增加与催化活性的提高密切相关。
