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The measurement of hydration heats for magnesium chloride with low water by means of DSC
Chen, J; Ma, P; Chen, G; Chen, F
2001
Source PublicationJOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume65Issue:3Pages:777-786
SubtypeArticle
AbstractThe heats of hydration reactions for MgCl2. 4H(2)O and MgCl2. 2H(2)O include two parts, reaction enthalpy and adsorption heat of aqueous vapor on the surfaces of magnesium chloride hydrates. The hydration heat for the reactions MgCl2. 4H(2)O+2H(2)O --> MgCl2. 6H(2)O and MgCl2. 2H(2)O+2H(2)O --> MgCl2. 4H(2)O, measured by DSC-111, is -30.36 and -133.94 kJ mol(-1), respectively. The adsorption heat of these hydration processes, measured by head-on chromatography method, is -13.06 and -16.11 kJ mol(-1), respectively. The molar enthalpy change for the above two reactions is -16.64 and -118.09 kJ mol(-1), respectively. The comparison between the experimental data and the theoretical values for these hydration processes indicates that the results obtained in this study are quite reliable.
KeywordAdsorption Heat Dsc Gas Chromatography Hydration Heat Magnesium Chloride With Low Water
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS IDWOS:000171147100011
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6061
Collection青海盐湖研究所知识仓储
Affiliation1.Qinghai Univ, Coll Chem Engn, Xining 810016, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810016, Peoples R China
3.Zhejiang Univ, Coll Chem Engn, Hangzhou 310027, Peoples R China
Recommended Citation
GB/T 7714
Chen, J,Ma, P,Chen, G,et al. The measurement of hydration heats for magnesium chloride with low water by means of DSC[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2001,65(3):777-786.
APA Chen, J,Ma, P,Chen, G,&Chen, F.(2001).The measurement of hydration heats for magnesium chloride with low water by means of DSC.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,65(3),777-786.
MLA Chen, J,et al."The measurement of hydration heats for magnesium chloride with low water by means of DSC".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 65.3(2001):777-786.
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