Jun-yi XIANG , Ming-shuai LUO , Lu-wei BAI , Xi LU , Zhong-peng ZHU , Qing-yun HUANG , Kui-song ZHU , Gui-shang PEI , Xue-wei LÜ
{"title":"氧化镁-V2O5 二元体系固态反应中的相变及产物的溶解行为","authors":"Jun-yi XIANG , Ming-shuai LUO , Lu-wei BAI , Xi LU , Zhong-peng ZHU , Qing-yun HUANG , Kui-song ZHU , Gui-shang PEI , Xue-wei LÜ","doi":"10.1016/S1003-6326(24)66521-0","DOIUrl":null,"url":null,"abstract":"<div><p>The solid-state reaction behavior of MgO−V<sub>2</sub>O<sub>5</sub> mixtures with different molar ratios was explored. The solubility of the solid-state reaction products (magnesium vanadates) in water at 25−55 °C was measured using the isothermal solution saturation method. The dissolution behavior and kinetics of the magnesium vanadates in dilute sulfuric acid were also investigated. The results showed that the molar ratio of MgO to V<sub>2</sub>O<sub>5</sub> and roasting temperature significantly influenced the phase transformation of the solid-state reaction product. MgV<sub>2</sub>O<sub>6</sub> exhibits the highest solubility in water, followed by Mg<sub>2</sub>V<sub>2</sub>O<sub>7</sub> and Mg<sub>3</sub>V<sub>2</sub>O<sub>8</sub>. The dissolution rate of magnesium vanadates in dilute sulfuric was significantly increased with the decrease of pH from 4.0 to 2.5 and the temperature increase from 30 to 70 °C. The dissolution of magnesium vanadate can be described using a second-order pseudo-homogeneous reaction model.</p></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 6","pages":"Pages 1994-2006"},"PeriodicalIF":4.7000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665210/pdf?md5=3c75744c01f2b5670ed9cbdc522c5729&pid=1-s2.0-S1003632624665210-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Phase transformation in solid-state reaction of MgO−V2O5 binary system and dissolution behavior of products\",\"authors\":\"Jun-yi XIANG , Ming-shuai LUO , Lu-wei BAI , Xi LU , Zhong-peng ZHU , Qing-yun HUANG , Kui-song ZHU , Gui-shang PEI , Xue-wei LÜ\",\"doi\":\"10.1016/S1003-6326(24)66521-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The solid-state reaction behavior of MgO−V<sub>2</sub>O<sub>5</sub> mixtures with different molar ratios was explored. The solubility of the solid-state reaction products (magnesium vanadates) in water at 25−55 °C was measured using the isothermal solution saturation method. The dissolution behavior and kinetics of the magnesium vanadates in dilute sulfuric acid were also investigated. The results showed that the molar ratio of MgO to V<sub>2</sub>O<sub>5</sub> and roasting temperature significantly influenced the phase transformation of the solid-state reaction product. MgV<sub>2</sub>O<sub>6</sub> exhibits the highest solubility in water, followed by Mg<sub>2</sub>V<sub>2</sub>O<sub>7</sub> and Mg<sub>3</sub>V<sub>2</sub>O<sub>8</sub>. The dissolution rate of magnesium vanadates in dilute sulfuric was significantly increased with the decrease of pH from 4.0 to 2.5 and the temperature increase from 30 to 70 °C. The dissolution of magnesium vanadate can be described using a second-order pseudo-homogeneous reaction model.</p></div>\",\"PeriodicalId\":23191,\"journal\":{\"name\":\"Transactions of Nonferrous Metals Society of China\",\"volume\":\"34 6\",\"pages\":\"Pages 1994-2006\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S1003632624665210/pdf?md5=3c75744c01f2b5670ed9cbdc522c5729&pid=1-s2.0-S1003632624665210-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transactions of Nonferrous Metals Society of China\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1003632624665210\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transactions of Nonferrous Metals Society of China","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1003632624665210","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
Phase transformation in solid-state reaction of MgO−V2O5 binary system and dissolution behavior of products
The solid-state reaction behavior of MgO−V2O5 mixtures with different molar ratios was explored. The solubility of the solid-state reaction products (magnesium vanadates) in water at 25−55 °C was measured using the isothermal solution saturation method. The dissolution behavior and kinetics of the magnesium vanadates in dilute sulfuric acid were also investigated. The results showed that the molar ratio of MgO to V2O5 and roasting temperature significantly influenced the phase transformation of the solid-state reaction product. MgV2O6 exhibits the highest solubility in water, followed by Mg2V2O7 and Mg3V2O8. The dissolution rate of magnesium vanadates in dilute sulfuric was significantly increased with the decrease of pH from 4.0 to 2.5 and the temperature increase from 30 to 70 °C. The dissolution of magnesium vanadate can be described using a second-order pseudo-homogeneous reaction model.
期刊介绍：
The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.
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