Manganese oxide catalysts have been synthesized from the used batteries via hydrometallurgical method and effect of hydrometallurgical parameters such as the effect of acid type (H₂SO₄, HNO₃, HCl), acid concentration (0.5, 1, 1.5, 2 %v/v) and powder to acid ratio (1/50, 1/60, 1/70, 1/80) were in detail investigated. The physico-chemical properties of as-prepared catalysts were characterized by FT-IR, XRD, FESEM, EDX, BET, TEM, and TPR-H₂ analysis. The activity of as-prepared catalysts were investigated towards the oxidation of benzene, toluene, and xylene (BTX) in a plasma-catalytic process. The results show that benzene and toluene conversion were almost constant in the range of 97–98% in case of various acid types, acid concentrations and solid to liquid ratios. However, the xylene conversion were varied in case of different hydrometallurgical factors. The highest xylene conversion was obtained in the presence of MnS0.5–60, which was prepared using H₂SO₄ with concentration of 0.5%v/v and solid to liquid ratio of 1/60. The effect of the input voltage and BTX flow rate on the BTX conversion was also investigated using MnS0.5–60 catalyst in detail.

通过湿法冶金从废电池中合成了锰氧化物催化剂，并通过湿法冶金参数的影响，例如酸类型（H ₂ SO ₄，HNO ₃，HCl），酸浓度（0.5、1、1.5、2％v / v）和粉末与酸的比率（1 / 50、1 / 60、1 / 70、1 / 80）进行了详细研究。通过FT-IR，XRD，FESEM，EDX，BET，TEM和TPR-H ₂表征所制备催化剂的物理化学性质。分析。研究了制备的催化剂在等离子体催化过程中对苯，甲苯和二甲苯（BTX）氧化的活性。结果表明，在各种酸类型，酸浓度和固液比下，苯和甲苯的转化率几乎恒定在97-98％的范围内。然而，在不同的湿法冶金因素的情况下，二甲苯的转化率是不同的。在使用浓度为0.5％v / v的H ₂ SO ₄和固液比为1/60的MnS0.5-60时，可获得最高的二甲苯转化率。还使用MnS0.5-60催化剂详细研究了输入电压和BTX流速对BTX转化率的影响。