基于废旧锂离子电池正极材料LiMn_2O_4制备λ-MnO_2催化剂  

Preparation of λ-MnO_2 catalyst from spent LiMn_2O_4-based lithium-ion battery

作　　者：张卫新[1] 马世闯[1] 杨则恒[1] 周晨旭[1] 王强[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009

出　　处：《化工学报》2009年第5期1181-1185,共5页CIESC Journal

基　　金：国家自然科学基金项目(20876031; 20871038);安徽省自然科学基金项目(070414165);安徽省高等学校省级科技创新团队计划(TD200702);合肥工业大学创新基金项目(XS08037)~~

摘　　要：Manganese oxide was obtained by selective chemical leaching of lithium ion out from the spent LiMn2O4 electrode materials and in-situ phase transformation.The prepared manganese oxide was characterized by X-ray power diffraction (XRD) and showed cubic λ-MnO2.The λ-MnO2 powder was found to be an effective catalyst for the synthesis of iso-amyl acetate from acetic acid and iso-amyl alcohol.The reaction results showed that when the leaching sulfuric acid concentration was 0.5 mol·L-1 and reaction time was 3 h,λ-MnO2 showed the best catalytic activity and excellent selectivity for esterification of iso-amyl acetate(yield 94.62%).Manganese oxide was obtained by selective chemical leaching of lithium ion out from the spent LiMn2O4 electrode materials and in-situ phase transformation. The prepared manganese oxide was characterized by X-ray power diffraction （XRD） and showed cubic k-MnO2. The λ-MnO2 powder was found to be an effective catalyst for the synthesis of iso-amyl acetate from acetic acid and iso-amyl alcohol. The reaction results showed that when the leaching sulfuric acid concentration was 0.5 mol·L^-1 and reaction time was 3 h, λ-MnO2 showed the best catalytic activity and excellent selectivity for esterification of isoamyl acetate （yield 94.62%）.

关 键 词：废旧锂离子电池 Λ-MNO2 催化剂 乙酸异戊酯 

分 类 号：TQ150.9[化学工程—电化学工业]