Abstract
Lithium ionic sieve precursor Li2TiO3 was synthesized by a solid-phase reaction with Li2CO3 and TiO2 as the raw materials. The effect of the roasting temperature, the roasting time and the molar ratio of Li2CO3/TiO2 on the synthesis of precursor were investigated respectively. The precursor was eluted with 0.8mol/L sodium persulfate (Na2S2O8), the lithium adsorption properties after elution and its lithium uptakes in different aqueous solutions containing lithium were investigated respectively. The structure and surface morphology of the samples were characterized by XRD (X-ray diffraction) and SEM (scanning electron microscope). The results indicated that the optimal synthesis conditions of monoclinic lithium metatitanate (Li2TiO3) were n(Li2CO3/TiO2)=1.05, baking temperature of 850°C for 5h with a heating rate of 4°C/min; the precursor eluted with 0.8mol/L Na2S2O8 showed better performance, and its adsorption process followed the pseudo-second-order kinetics mode; coexisting metal ions such as Na+, K+ and Mg2+ had a little effect on the adsorption performance.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
