{"title":"具有石榴石结构的 Na3Cr2(AsO4)3 的热力学","authors":"","doi":"10.1016/j.jct.2024.107364","DOIUrl":null,"url":null,"abstract":"<div><p>In this work the heat capacity <span><math><mrow><msubsup><mi>C</mi><mrow><mi>p</mi><mo>,</mo><mi>m</mi></mrow><mi>o</mi></msubsup><mo>=</mo><mi>f</mi><mrow><mo>(</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> of the garnet-structured Na<sub>3</sub>Cr<sub>2</sub>(AsO<sub>4</sub>)<sub>3</sub> was first investigated. Measurements were performed in the range of <em>T =</em> (5 and 323) K using a precise adiabatic vacuum calorimeter. The phase purity and composition homogeneity were verified by X-ray diffraction analysis with Rietveld method calculations and X-ray microanalysis. The <span><math><mrow><msubsup><mi>C</mi><mrow><mi>p</mi><mo>,</mo><mi>m</mi></mrow><mi>o</mi></msubsup><mo>,</mo><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>H</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup><mo>,</mo><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>S</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup><mi>a</mi><mi>n</mi><mi>d</mi><mspace></mspace><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>G</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup></mrow></math></span> have been calculated using experimental data from <em>T→</em>0 to 323 K.</p></div>","PeriodicalId":54867,"journal":{"name":"Journal of Chemical Thermodynamics","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermodynamics of Na3Cr2(AsO4)3 with garnet structure\",\"authors\":\"\",\"doi\":\"10.1016/j.jct.2024.107364\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work the heat capacity <span><math><mrow><msubsup><mi>C</mi><mrow><mi>p</mi><mo>,</mo><mi>m</mi></mrow><mi>o</mi></msubsup><mo>=</mo><mi>f</mi><mrow><mo>(</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> of the garnet-structured Na<sub>3</sub>Cr<sub>2</sub>(AsO<sub>4</sub>)<sub>3</sub> was first investigated. Measurements were performed in the range of <em>T =</em> (5 and 323) K using a precise adiabatic vacuum calorimeter. The phase purity and composition homogeneity were verified by X-ray diffraction analysis with Rietveld method calculations and X-ray microanalysis. The <span><math><mrow><msubsup><mi>C</mi><mrow><mi>p</mi><mo>,</mo><mi>m</mi></mrow><mi>o</mi></msubsup><mo>,</mo><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>H</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup><mo>,</mo><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>S</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup><mi>a</mi><mi>n</mi><mi>d</mi><mspace></mspace><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>G</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup></mrow></math></span> have been calculated using experimental data from <em>T→</em>0 to 323 K.</p></div>\",\"PeriodicalId\":54867,\"journal\":{\"name\":\"Journal of Chemical Thermodynamics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-08-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Chemical Thermodynamics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0021961424001174\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chemical Thermodynamics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021961424001174","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
本研究首次对石榴石结构的 Na3Cr2(AsO4)3 的热容量 Cp,mo=f(T) 进行了研究。测量是在 T = (5 和 323) K 的范围内使用精密绝热真空热量计进行的。通过 X 射线衍射分析、里特维尔德法计算和 X 射线显微分析验证了相的纯度和成分的均匀性。利用从 T→0 到 323 K 的实验数据计算了 Cp、mo、Δ0THm0、Δ0TSm0 和Δ0TGm0。
Thermodynamics of Na3Cr2(AsO4)3 with garnet structure
In this work the heat capacity of the garnet-structured Na3Cr2(AsO4)3 was first investigated. Measurements were performed in the range of T = (5 and 323) K using a precise adiabatic vacuum calorimeter. The phase purity and composition homogeneity were verified by X-ray diffraction analysis with Rietveld method calculations and X-ray microanalysis. The have been calculated using experimental data from T→0 to 323 K.
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