Insight into the Growth Mechanism of Low-Temperature Synthesis of High-Purity Lithium Slag-Based Zeolite A
The utilization of lithium slag (LS), a solid waste generated during the production of lithium carbonate, poses challenges due to its high sulfur content. This study presents a novel approach to enhancing the value of LS by employing alkali fusion and hydrothermal synthesis techniques to produce zeo...
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MDPI AG
2024-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/17/3/568 |
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| author | Li Li Shicheng Xu Ze Liu Dongmin Wang |
| author_facet | Li Li Shicheng Xu Ze Liu Dongmin Wang |
| author_sort | Li Li |
| collection | DOAJ |
| description | The utilization of lithium slag (LS), a solid waste generated during the production of lithium carbonate, poses challenges due to its high sulfur content. This study presents a novel approach to enhancing the value of LS by employing alkali fusion and hydrothermal synthesis techniques to produce zeolite A at low temperatures. The synthesis of high-purity and crystalline lithium-slag-based zeolite A (LSZ) at 60 °C is reported for the first time in this research. The phase, morphology, particle size, and structure of LSZ were characterized by XRD, SEM, TEM, N<sub>2</sub> adsorption, and UV Raman spectroscopy, respectively. High-purity and crystalline zeolite A was successfully obtained under hydrothermal conditions of 60 °C, an NaOH concentration of 2.0 mol/L, and a hydrothermal time of 8 h. The samples synthesized at 60 °C exhibited better controllability and almost no byproduct of sodalite occurred compared to zeolite A synthesized at room temperature or conventional temperature (approximately 90 °C). Additionally, the growth mechanism of LSZ was elucidated, challenging the traditional understanding of utilization of lithium and enabling the synthesis of various zeolites at lower temperatures. |
| first_indexed | 2024-03-08T03:53:24Z |
| format | Article |
| id | doaj.art-1fb3c5fc7411492983824a6180fd0269 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T03:53:24Z |
| publishDate | 2024-01-01 |
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| spelling | doaj.art-1fb3c5fc7411492983824a6180fd02692024-02-09T15:17:10ZengMDPI AGMaterials1996-19442024-01-0117356810.3390/ma17030568Insight into the Growth Mechanism of Low-Temperature Synthesis of High-Purity Lithium Slag-Based Zeolite ALi Li0Shicheng Xu1Ze Liu2Dongmin Wang3School of Chemical & Environmental Engineering, China University of Mining & Technology, Ding No. 11, Xueyuan Road, Haidian District, Beijing 100083, ChinaSchool of Chemical & Environmental Engineering, China University of Mining & Technology, Ding No. 11, Xueyuan Road, Haidian District, Beijing 100083, ChinaSchool of Chemical & Environmental Engineering, China University of Mining & Technology, Ding No. 11, Xueyuan Road, Haidian District, Beijing 100083, ChinaSchool of Chemical & Environmental Engineering, China University of Mining & Technology, Ding No. 11, Xueyuan Road, Haidian District, Beijing 100083, ChinaThe utilization of lithium slag (LS), a solid waste generated during the production of lithium carbonate, poses challenges due to its high sulfur content. This study presents a novel approach to enhancing the value of LS by employing alkali fusion and hydrothermal synthesis techniques to produce zeolite A at low temperatures. The synthesis of high-purity and crystalline lithium-slag-based zeolite A (LSZ) at 60 °C is reported for the first time in this research. The phase, morphology, particle size, and structure of LSZ were characterized by XRD, SEM, TEM, N<sub>2</sub> adsorption, and UV Raman spectroscopy, respectively. High-purity and crystalline zeolite A was successfully obtained under hydrothermal conditions of 60 °C, an NaOH concentration of 2.0 mol/L, and a hydrothermal time of 8 h. The samples synthesized at 60 °C exhibited better controllability and almost no byproduct of sodalite occurred compared to zeolite A synthesized at room temperature or conventional temperature (approximately 90 °C). Additionally, the growth mechanism of LSZ was elucidated, challenging the traditional understanding of utilization of lithium and enabling the synthesis of various zeolites at lower temperatures.https://www.mdpi.com/1996-1944/17/3/568lithium slagzeolite Alow-temperaturehigh-puritygrowth mechanism |
| spellingShingle | Li Li Shicheng Xu Ze Liu Dongmin Wang Insight into the Growth Mechanism of Low-Temperature Synthesis of High-Purity Lithium Slag-Based Zeolite A Materials lithium slag zeolite A low-temperature high-purity growth mechanism |
| title | Insight into the Growth Mechanism of Low-Temperature Synthesis of High-Purity Lithium Slag-Based Zeolite A |
| title_full | Insight into the Growth Mechanism of Low-Temperature Synthesis of High-Purity Lithium Slag-Based Zeolite A |
| title_fullStr | Insight into the Growth Mechanism of Low-Temperature Synthesis of High-Purity Lithium Slag-Based Zeolite A |
| title_full_unstemmed | Insight into the Growth Mechanism of Low-Temperature Synthesis of High-Purity Lithium Slag-Based Zeolite A |
| title_short | Insight into the Growth Mechanism of Low-Temperature Synthesis of High-Purity Lithium Slag-Based Zeolite A |
| title_sort | insight into the growth mechanism of low temperature synthesis of high purity lithium slag based zeolite a |
| topic | lithium slag zeolite A low-temperature high-purity growth mechanism |
| url | https://www.mdpi.com/1996-1944/17/3/568 |
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