School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea.
Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea.
J Hazard Mater. 2021 Feb 5;403:123929. doi: 10.1016/j.jhazmat.2020.123929. Epub 2020 Sep 15.
A spent alkaline battery-based (SB) catalyst was prepared from the black mass of a spent alkaline battery to determine the potential of recycling spent alkaline batteries as catalysts for the total oxidation of hydrocarbons. Five different acids (HSO, HNO, CHO, HCl, and HPO) were used to examine the effect of acid treatment on catalytic activity during catalyst preparation. Hexane, benzene, toluene, and o-xylene (HBTX) were adopted as the VOCs for experiments. The properties of the prepared catalysts were studied using ICP/OES, BET, XRD, ATR/FTIR, TGA, SEM, and H-TPR analyses. The results showed that acid treatment significantly influenced the activity of the SB (400) catalyst, with the type of acid also found to greatly influence the activity of the catalyst. The order of activity according to the type of acid was HSO > HNO > CHO > HCl > HPO > none. Good performance of an acid-treated SB catalyst was associated with high concentrations of manganese and iron and a large BET surface area. In addition, the sequence in which the TPR peaks appeared at low temperatures according to each acid treatment was consistent with that of catalyst activity.
从废碱性电池的黑粉中制备了废碱性电池基（SB）催化剂，以确定回收废碱性电池作为烃类完全氧化催化剂的潜力。使用了五种不同的酸（HSO、HNO、CHO、HCl 和 HPO）来考察在催化剂制备过程中酸处理对催化活性的影响。采用正己烷、苯、甲苯和邻二甲苯（HBTX）作为挥发性有机化合物进行实验。通过 ICP/OES、BET、XRD、ATR/FTIR、TGA、SEM 和 H-TPR 分析研究了制备催化剂的性能。结果表明，酸处理显著影响了 SB（400）催化剂的活性，而且酸的类型也极大地影响了催化剂的活性。根据酸的类型，活性顺序为 HSO>HNO>CHO>HCl>HPO>无。酸处理的 SB 催化剂性能良好与锰和铁的高浓度和大 BET 表面积有关。此外，根据每种酸处理出现的低温 TPR 峰的顺序与催化剂活性一致。
