Park Young-Kwon, Jung Sang-Chul, Jung Ho-Young, Foong Shin Ying, Lam Su Shiung, Kim Sang Chai
School of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea.
Department of Environmental Engineering, Sunchon National University, Sunchon, 57975, Republic of Korea.
Environ Sci Pollut Res Int. 2021 May;28(19):24552-24557. doi: 10.1007/s11356-020-09575-6. Epub 2020 Jun 13.
Oxidation of o-xylene was performed using alkaline battery-based catalyst doped with platinum to investigate the properties and activities. O-xylene was selected as the model of volatile organic compound (VOC) in this work. Physicochemical properties of the selected catalysts were characterized by FE/TEM (field emission transmission electron microscopy), BET (Brunauer-Emmett-Teller) analysis, XRD (X-ray powder diffraction), SEM/EDX (scanning electron microscopy/energy dispersive X-ray spectroscopy), and H-TPR (hydrogen temperature programmed reduction). Major elements of the spent alkaline battery-based catalyst treated with sulfuric acid solution [SAB (400) catalyst] were manganese, zinc, iron, oxygen, carbon, chlorine, aluminum, sodium, silicon, and potassium. Increasing the doping amount of platinum on SAB (400) catalyst from 0.1 to 1 wt% increased particle size of platinum and lowered the temperature of TPR (TTP) for SAB (400) catalyst. Better redox properties were achieved with an increase in the o-xylene conversion according to the doping amount of platinum. When GHSV (gas hourly space velocity) was 40,000 h, o-xylene was oxidized completely over SAB (400) catalyst and 1.0 wt% Pt/SAB(400) catalyst at temperatures of 400 °C and 280 °C, respectively.
使用掺杂铂的碱性电池基催化剂进行邻二甲苯氧化反应，以研究其性能和活性。在本工作中，选择邻二甲苯作为挥发性有机化合物（VOC）的模型。通过场发射透射电子显微镜（FE/TEM）、布鲁诺尔-埃米特-泰勒（BET）分析、X射线粉末衍射（XRD）、扫描电子显微镜/能量色散X射线光谱（SEM/EDX）和氢气程序升温还原（H-TPR）对所选催化剂的物理化学性质进行了表征。用硫酸溶液处理的废碱性电池基催化剂[SAB(400)催化剂]的主要元素有锰、锌、铁、氧、碳、氯、铝、钠、硅和钾。将SAB(400)催化剂上铂的掺杂量从0.1 wt%增加到1 wt%，会增加铂的粒径，并降低SAB(400)催化剂的程序升温还原温度（TTP）。随着铂掺杂量的增加，邻二甲苯转化率提高，氧化还原性能更好。当气体时空速（GHSV）为40,000 h⁻¹时，邻二甲苯在SAB(400)催化剂和1.0 wt% Pt/SAB(400)催化剂上分别在400℃和280℃时被完全氧化。
