M. Chaban, Ludmila Rozhdesvenska, Yulia Dzyazko, L. Ponomarova, A. Palchik
{"title":"含锰尖晶石TiO2纳米复合吸附剂对锂离子浓度的影响","authors":"M. Chaban, Ludmila Rozhdesvenska, Yulia Dzyazko, L. Ponomarova, A. Palchik","doi":"10.1109/NAP51477.2020.9309587","DOIUrl":null,"url":null,"abstract":"A method for obtaining nanocomposite sorbents, which are selective towards $\\mathrm{L}\\mathrm{i}^{+}$ ions, has been proposed. The samples are based on adsorptive active anatase, the selective component is lithium-manganese spinel $\\mathrm{L}\\mathrm{i}\\mathrm{M}\\mathrm{n}_{2}\\mathrm{O}_{4}$. This component was synthesized preliminarily, its nanoparticles were inserted to the sol of insoluble titanium hydroxocomplexes, the nanocomposite was precipitated from this suspension and calcined at 500° C. A number of sorbents with different molar ratio of Ti:Mn was obtained by this manner, they were investigated by means of chemical analysis, X-ray diffraction, optical microscopy, TEM and SEM. The size of nanocrystallites is 20-30nm. Increasing the spinel amount has been found to decrease the sorbent grain size, however, they are mechanically durable due to $\\mathrm{T}\\mathrm{i}\\mathrm{O}_{2}$, which is a binder. Adsorption of $\\mathrm{L}\\mathrm{i}^{+}$ from the solution containing an excess of $\\mathrm{N}\\mathrm{a}^{+}$ ions was studied. The optimal amount of $\\mathrm{L}\\mathrm{i}\\mathrm{M}\\mathrm{n}_{2}\\mathrm{O}_{4}$ (13 %) has been found. The sample is obtained in a form of rather large grains $(\\approx 0.3 \\mathrm{~mm})$, the selectivity coefficient $\\mathrm{L}\\mathrm{i}^{+}/\\mathrm{N}\\mathrm{a}^{+}$ is about 500. The sorbent is regenerated with a 1 M HNO3 solution without manganese leakage. After 10 cycles of sorption-desorption, the concentrate was obtained, Further the concentrate can be used for $\\mathrm{L}\\mathrm{i}_{2}\\mathrm{C}\\mathrm{O}_{3}$ precipitation.","PeriodicalId":6770,"journal":{"name":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"1 1","pages":"02NEE02-1-02NEE02-5"},"PeriodicalIF":0.0000,"publicationDate":"2020-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Nanocomposite Sorbents Based on TiO2 Containing Manganese Spinel for Concentration of Lithium Ions\",\"authors\":\"M. Chaban, Ludmila Rozhdesvenska, Yulia Dzyazko, L. Ponomarova, A. Palchik\",\"doi\":\"10.1109/NAP51477.2020.9309587\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A method for obtaining nanocomposite sorbents, which are selective towards $\\\\mathrm{L}\\\\mathrm{i}^{+}$ ions, has been proposed. The samples are based on adsorptive active anatase, the selective component is lithium-manganese spinel $\\\\mathrm{L}\\\\mathrm{i}\\\\mathrm{M}\\\\mathrm{n}_{2}\\\\mathrm{O}_{4}$. This component was synthesized preliminarily, its nanoparticles were inserted to the sol of insoluble titanium hydroxocomplexes, the nanocomposite was precipitated from this suspension and calcined at 500° C. A number of sorbents with different molar ratio of Ti:Mn was obtained by this manner, they were investigated by means of chemical analysis, X-ray diffraction, optical microscopy, TEM and SEM. The size of nanocrystallites is 20-30nm. Increasing the spinel amount has been found to decrease the sorbent grain size, however, they are mechanically durable due to $\\\\mathrm{T}\\\\mathrm{i}\\\\mathrm{O}_{2}$, which is a binder. Adsorption of $\\\\mathrm{L}\\\\mathrm{i}^{+}$ from the solution containing an excess of $\\\\mathrm{N}\\\\mathrm{a}^{+}$ ions was studied. The optimal amount of $\\\\mathrm{L}\\\\mathrm{i}\\\\mathrm{M}\\\\mathrm{n}_{2}\\\\mathrm{O}_{4}$ (13 %) has been found. The sample is obtained in a form of rather large grains $(\\\\approx 0.3 \\\\mathrm{~mm})$, the selectivity coefficient $\\\\mathrm{L}\\\\mathrm{i}^{+}/\\\\mathrm{N}\\\\mathrm{a}^{+}$ is about 500. The sorbent is regenerated with a 1 M HNO3 solution without manganese leakage. After 10 cycles of sorption-desorption, the concentrate was obtained, Further the concentrate can be used for $\\\\mathrm{L}\\\\mathrm{i}_{2}\\\\mathrm{C}\\\\mathrm{O}_{3}$ precipitation.\",\"PeriodicalId\":6770,\"journal\":{\"name\":\"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)\",\"volume\":\"1 1\",\"pages\":\"02NEE02-1-02NEE02-5\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-11-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/NAP51477.2020.9309587\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NAP51477.2020.9309587","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Nanocomposite Sorbents Based on TiO2 Containing Manganese Spinel for Concentration of Lithium Ions
A method for obtaining nanocomposite sorbents, which are selective towards $\mathrm{L}\mathrm{i}^{+}$ ions, has been proposed. The samples are based on adsorptive active anatase, the selective component is lithium-manganese spinel $\mathrm{L}\mathrm{i}\mathrm{M}\mathrm{n}_{2}\mathrm{O}_{4}$. This component was synthesized preliminarily, its nanoparticles were inserted to the sol of insoluble titanium hydroxocomplexes, the nanocomposite was precipitated from this suspension and calcined at 500° C. A number of sorbents with different molar ratio of Ti:Mn was obtained by this manner, they were investigated by means of chemical analysis, X-ray diffraction, optical microscopy, TEM and SEM. The size of nanocrystallites is 20-30nm. Increasing the spinel amount has been found to decrease the sorbent grain size, however, they are mechanically durable due to $\mathrm{T}\mathrm{i}\mathrm{O}_{2}$, which is a binder. Adsorption of $\mathrm{L}\mathrm{i}^{+}$ from the solution containing an excess of $\mathrm{N}\mathrm{a}^{+}$ ions was studied. The optimal amount of $\mathrm{L}\mathrm{i}\mathrm{M}\mathrm{n}_{2}\mathrm{O}_{4}$ (13 %) has been found. The sample is obtained in a form of rather large grains $(\approx 0.3 \mathrm{~mm})$, the selectivity coefficient $\mathrm{L}\mathrm{i}^{+}/\mathrm{N}\mathrm{a}^{+}$ is about 500. The sorbent is regenerated with a 1 M HNO3 solution without manganese leakage. After 10 cycles of sorption-desorption, the concentrate was obtained, Further the concentrate can be used for $\mathrm{L}\mathrm{i}_{2}\mathrm{C}\mathrm{O}_{3}$ precipitation.