(181a) Synthesis and Efficiency Evaluation of Catalysts for Methane Dry Reforming Using Lithium-Free Waste Battery Materials Treated with Oxalic Acid.

With the increasing demand for electric vehicles, wastes from spent batteries are on the rise. Black powder in these waste batteries contains valuable metals like nickel, cobalt, and manganese. Dry reforming of methane (DRM) converts CHâ‚„ and COâ‚‚ into syngas using catalysts of typically nickel or cobalt-based. Nickel catalysts have the disadvantage of degrading performance due to coking, which causes carbon to be deposited. Cobalt catalysts have lower selectivity and activity compared to nickel catalysts, and they are more expensive. Bimetallic catalysts like nickel-cobalt and manganese oxide reduce coking of DRM contents, enhancing catalyst performance. In this study, a cost-competitive DRM catalyst was prepared using black powder. Black powder contains Ni, Co, and Mn metals which can be used for DRM catalysts. However, Li is a factor that hinders catalytic synthesis. Therefore, we evaluated the efficiency of lithium removal from black powder using oxalic acid leaching process. In this work, DRM catalysts prepared with Lithium-removed black powder, which was evaluated for CHâ‚„ and COâ‚‚ conversion.