Abstract
Lithium-aluminum-layered double hydroxide chloride (LDH) has been recently demonstrated to be a promising sorbent material for selective lithium extraction and recovery from geothermal brine. In this research, LDH samples synthesized from two different starting materials (alumina and gibbsite) and with two post-drying conditions (ambient-dried and oven-dried) as well as and Fe-doped LDH are studied using neutron vibrational spectroscopy. The results reveal differences in the ordering of interlayer water molecules. Thermochemical measurements of LDHs show that a higher interlayer ordering of water is directly related to the stability of gibbsite- and alumina-derived LDH. This corroborates with the previous work on increasing the stabilization of LDH via partial substitution of aluminum with iron. These findings on the properties of LDH have implications on their lithium extraction abilities and subsequent recovery.
| Original language | English |
|---|---|
| Pages (from-to) | 20723-20729 |
| Number of pages | 7 |
| Journal | Journal of Physical Chemistry C |
| Volume | 123 |
| Issue number | 34 |
| DOIs | |
| State | Published - Aug 29 2019 |
Funding
This work was supported by the Critical Materials Institute, an Energy Innovation Hub funded by the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office. Neutron scattering experiment was performed at ORNL’s Spallation Neutron Source, supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, US DOE, under contract no. DE-AC0500OR22725 with UT Battelle, LLC. The computing resources were made available through the VirtuES and the ICE-MAN projects, funded by the Laboratory Directed Research and Development program and Compute and Data Environment for Science (CADES) at ORNL. FT-IR measurements were conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. S.F.E. is grateful for a fellowship from the Bredesen Center for Interdisciplinary Graduate Education. This manuscript has been authored by UT-Battelle, LLC under contract no. DE-AC05-00OR22725 with the US DOE. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, and worldwide license to publish or reproduce the published form of this manuscript or allow others to do so, for United States Government purposes. The US DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
| Funders | Funder number |
|---|---|
| Bredesen Center for Interdisciplinary Graduate Education | |
| Compute and Data Environment for Science | |
| Critical Materials Institute | |
| Office of Basic Energy Sciences | |
| Scientific User Facilities Division | |
| U.S. Department of Energy | |
| Advanced Manufacturing Office | |
| Office of Energy Efficiency and Renewable Energy | |
| Laboratory Directed Research and Development | |
| Cades Foundation |
