Igor N. Pyagay, Yana A. Svakhina, Marina E. Titova, Vladimir V. Miroshnichenko, Victoria R. Dronova
{"title":"水凝胶摩尔成分对利用技术硅胶合成 LTA 型沸石的影响","authors":"Igor N. Pyagay, Yana A. Svakhina, Marina E. Titova, Vladimir V. Miroshnichenko, Victoria R. Dronova","doi":"10.1007/s12633-024-03053-1","DOIUrl":null,"url":null,"abstract":"<div><p>Resource saving and creation of environmentally safe environment are the guidelines of modern world policy in the field of waste management. This paper considers a possible method of utilization of a by-product of aluminum fluoride production—silica gel—as an alternative high-silica raw material for hydrothermal synthesis of LTA-type zeolites. To obtain synthetic zeolites, industrial silica gel was subjected to sulfuric acid purification and used to obtain one of the hydrogel components—sodium silicate. As a result of investigation of the influence of hydrogel molar composition on the phase composition of the obtained samples, the optimal molar ratios of SiO<sub>2</sub>:Al<sub>2</sub>O<sub>3</sub>, Na<sub>2</sub>O:Al<sub>2</sub>O<sub>3</sub> and H<sub>2</sub>O:SiO<sub>2</sub> were identified. The phase composition of the obtained samples and morphological pattern were evaluated using X-ray diffraction and scanning electron microscopy techniques. According to the obtained results, the use of hydrogel of composition 1.8SiO<sub>2</sub>:Al<sub>2</sub>O<sub>3</sub>:4Na<sub>2</sub>O:28H<sub>2</sub>O allows to obtain a monophase of LTA type zeolite with high ion exchange capacity, the particles of which have a regular cubic shape with the size of the main fraction up to 10 μm.</p></div>","PeriodicalId":776,"journal":{"name":"Silicon","volume":"16 11","pages":"4811 - 4819"},"PeriodicalIF":2.8000,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Hydrogel Molar Composition on the Synthesis of LTA-type Zeolites in the Utilization of Technogenic Silica Gel\",\"authors\":\"Igor N. Pyagay, Yana A. Svakhina, Marina E. Titova, Vladimir V. Miroshnichenko, Victoria R. Dronova\",\"doi\":\"10.1007/s12633-024-03053-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Resource saving and creation of environmentally safe environment are the guidelines of modern world policy in the field of waste management. This paper considers a possible method of utilization of a by-product of aluminum fluoride production—silica gel—as an alternative high-silica raw material for hydrothermal synthesis of LTA-type zeolites. To obtain synthetic zeolites, industrial silica gel was subjected to sulfuric acid purification and used to obtain one of the hydrogel components—sodium silicate. As a result of investigation of the influence of hydrogel molar composition on the phase composition of the obtained samples, the optimal molar ratios of SiO<sub>2</sub>:Al<sub>2</sub>O<sub>3</sub>, Na<sub>2</sub>O:Al<sub>2</sub>O<sub>3</sub> and H<sub>2</sub>O:SiO<sub>2</sub> were identified. The phase composition of the obtained samples and morphological pattern were evaluated using X-ray diffraction and scanning electron microscopy techniques. According to the obtained results, the use of hydrogel of composition 1.8SiO<sub>2</sub>:Al<sub>2</sub>O<sub>3</sub>:4Na<sub>2</sub>O:28H<sub>2</sub>O allows to obtain a monophase of LTA type zeolite with high ion exchange capacity, the particles of which have a regular cubic shape with the size of the main fraction up to 10 μm.</p></div>\",\"PeriodicalId\":776,\"journal\":{\"name\":\"Silicon\",\"volume\":\"16 11\",\"pages\":\"4811 - 4819\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-06-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Silicon\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12633-024-03053-1\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Silicon","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12633-024-03053-1","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Effect of Hydrogel Molar Composition on the Synthesis of LTA-type Zeolites in the Utilization of Technogenic Silica Gel
Resource saving and creation of environmentally safe environment are the guidelines of modern world policy in the field of waste management. This paper considers a possible method of utilization of a by-product of aluminum fluoride production—silica gel—as an alternative high-silica raw material for hydrothermal synthesis of LTA-type zeolites. To obtain synthetic zeolites, industrial silica gel was subjected to sulfuric acid purification and used to obtain one of the hydrogel components—sodium silicate. As a result of investigation of the influence of hydrogel molar composition on the phase composition of the obtained samples, the optimal molar ratios of SiO2:Al2O3, Na2O:Al2O3 and H2O:SiO2 were identified. The phase composition of the obtained samples and morphological pattern were evaluated using X-ray diffraction and scanning electron microscopy techniques. According to the obtained results, the use of hydrogel of composition 1.8SiO2:Al2O3:4Na2O:28H2O allows to obtain a monophase of LTA type zeolite with high ion exchange capacity, the particles of which have a regular cubic shape with the size of the main fraction up to 10 μm.
期刊介绍:
The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.