Abstract
λ-MnO2 was prepared by column method from normal spinel LiMn2O4 with purity of 99.38%. The influence of LiMn2O4 grain size and acidity of leaching solution on the lithium leaching process was studied. The results show that the appropriate range of LiMn2O4 grain size was 60–160 meshes and the concentration of leaching solution HCl was 0.1 mol·L−1. The adsorption capacity Q of λ-MnO2 for lithium increased with the increase of pH and changed markedly at pH 6.0–10.0. It was 3.80mmol/g at pH 12.0 The distribution coefficients Kd of Li+ and Na+ were 3.406×104 and 2.300 respectively, and the separation coefficient a LiNa was 1.481 ×104 at pH 6.5. As a result, λ-MnO2 is a high performance ion-sieve material for lithium ion.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M M Thackeray, P J Johnson, L A de Picciotto. Electrochemical Extraction of Lithium from LiMn2O4.J. Mat. Res. Bull., 1984, 19:179
K Ooi, Y Miyai, S Katoh,et al. Topotactic Li+ Insertion to λ-MnO2 in the Aqueous Phase.J. Langmuir., 1989, 5:150–157
Y Onodera, T Iwasakl, H Hayashi,et al. Preparation Method and Lithium Adsorption Property of λ-MnO2-Silica Composite.J. Chemistry Letters., 1990, 23:1801.
Sagara, W B Ning, I Yoshida. Preparation and Adsorption Properties of λ-MnO2-Cellulose Hybrid-Type Ion-Exchanger of Lithium Ion from Seawater.J. Sep. Sci. Technol., 1989, 24(14):1227.
J C Hunter. Preparation of a New Crystal form of Manganese Dioxide: λ-MnO2.J. Solid State Chem., 1981, 39:142
Lei Jia-heng, Gong Qiao-xia, Shang Jian-hua, Chen Yong-xi, Yuan qi-hua. Study on Synthesis and Poperties of Normal Spinel Structure LiMn2O4 for Lithium. Ion-sieve Precursor.J. Wuhan Univ. (Nat. Sci. Ed.), 2001, (6):707.
Chen Yongxi, Zhou Li-juan, Guo Li-ping, Zhang Nan, Zhao Jun. The Research on the Determination of Average Mn Valency in Lithium Manganese Oxide.Journal of Wuhan University of Technology, 2001, 23(2):1
Kenta Ooi, yoshitaka Miyai, Shunsaku Katoh, Hiroshi Maeda, Mitsuo Abe. The pH Titration Study of Lithium Ion Adsorption on λ-MnO2.J. Bull. Chem. Soc. Jpn., 61, 1988:407
Author information
Authors and Affiliations
Additional information
LEI Jia-heng: Born in 1957.
Funded by the National Natural Science Foundation of China (No. 59972027) and the Natural Science Foundation of Hubei Province (No. 2002AB074)).
Rights and permissions
About this article
Cite this article
Jia-heng, L., Yong-xi, C., Qiao-xia, G. et al. Preparation of λ-MnO2 by column method and its ion-sieve property. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 17, 9–12 (2002). https://doi.org/10.1007/BF02838406
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02838406