LAPSE:2018.0392
Published Article
LAPSE:2018.0392
A Facile Synthesis of Hexagonal Spinel λ-MnO₂ Ion-Sieves for Highly Selective Li⁺ Adsorption
July 31, 2018
Ion-sieves are a class of green adsorbent for extraction Li+ from salt lakes. Here, we propose a facile synthesis of hexagonal spinel LiMn₂O₄ (LMO) precursor under mild condition which was first prepared via a modified one-pot reduction hydrothermal method using KMnO₄ and ethanol. Subsequently, the stable spinel structured λ-MnO₂ (HMO) were prepared by acidification of LMO. The as-prepared HMO shows a unique hexagonal shape and can be used for rapid adsorption-desorption process for Li+adsorption. It was found that Li⁺ adsorption capacity of HMO was 24.7 mg·g^−1 in Li+ solution and the HMO also has a stable structure with manganese dissolution loss ratio of 3.9% during desorption process. Moreover, the lithium selectivity (α Li/Mg) reaches to 1.35 × 10³ in brine and the distribution coefficients (Kd) of Li+ is much greater than that of Mg2+. The results implied that HMO can be used in extract lithium from brine or seawater containing high ratio of magnesium and lithium.
Record ID
Keywords
Adsorption, hydrothermal reaction, ion-sieve, LiMn2O4, λ-MnO2
Subject
Suggested Citation
Yang F, Chen S, Shi C, Xue F, Zhang X, Ju S, Xing W. A Facile Synthesis of Hexagonal Spinel λ-MnO₂ Ion-Sieves for Highly Selective Li⁺ Adsorption. (2018). LAPSE:2018.0392
Author Affiliations
Yang F: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Chen S: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Shi C: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Xue F: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China [ORCID]
Zhang X: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Ju S: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Xing W: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
[Login] to see author email addresses.
Chen S: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Shi C: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Xue F: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China [ORCID]
Zhang X: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Ju S: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Xing W: College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
[Login] to see author email addresses.
Journal Name
Processes
Volume
6
Issue
5
Article Number
E59
Year
2018
Publication Date
2018-05-17
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr6050059, Publication Type: Journal Article
Record Map
Published Article
LAPSE:2018.0392
This Record
External Link
doi:10.3390/pr6050059
Publisher Version
Download
Meta
Record Statistics
Record Views
879
Version History
[v1] (Original Submission)
Jul 31, 2018
Verified by curator on
Jul 31, 2018
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2018.0392
Original Submitter
Auto Uploader for LAPSE
Links to Related Works