| Gas chromatographic thermodynamics on hydration processes of magnesium chloride with low water |
| |
| 作者姓名： | 陈建军 陈关城 马培华 保积庆 马玉涛 陈丰秋 |
| |
| 作者单位： | College of Chemical Engineering，Qinghai University，Qinghai Institute of Salt Lakes，Chinese Academy of Sciences，Qinghai Institute of Salt Lakes，Chinese Academy of Sciences，Qinghai Institute of Salt Lakes，Chinese Academy of Sciences，College of Chemical Engineering，Qinghai University，College of Chemical Engineering，Zhejiang University Xining 810016，China，Xining 810008，China，Xining 810008，China，Xining 810008，China，Xining 810016，China，Hangzhou 310027，China |
| |
| 摘 要： | 1 INTRODUCTIONMagnesiumchlorideisabasicmaterialforchem icalindustry ,andithaswideapplicationsinmetallur gy,architecturalmaterialandtextileindustry .Itisalsoamaterialforfire resistantproducts ,cryogenandcompoundfertilizerproductions1] .Thefullydehy dratedmagnesiumchlorideisagoodmaterialforelec trolyticmetalmagnesium production .Becausemag nesiumchloridehasastrongadsorptiveability ,itisalsousedasadryingagent .Manysuccessfulworkshavebeendoneonthedehydrationofbischophite2 10 ] .Butinfact,…
|
Gas chromatographic thermodynamics on hydration processes of magnesium chloride with low water |
| |
| CHEN Jian jun ,CHEN Guan cheng ,MA Pei hua ,BAO Ji qing ,MA Yu tao ,CHEN Feng qiu.Gas chromatographic thermodynamics on hydration processes of magnesium chloride with low water[J].Transactions of Nonferrous Metals Society of China,2003,13(2). |
| |
| Authors: | CHEN Jian jun CHEN Guan cheng MA Pei hua BAO Ji qing MA Yu tao CHEN Feng qiu |
| |
| Affiliation: | CHEN Jian jun 1,CHEN Guan cheng 2,MA Pei hua 2,BAO Ji qing 2,MA Yu tao 1,CHEN Feng qiu 3 |
| |
| Abstract: | The dehydration and hydration processes of magnesium chloride hydrates were studied by means of frontal chromatography analysis, calorimetry, thermogravimetry and chemical analysis. The mathematical imitation for the adsorption isotherms of MgCl2*4H2O and MgCl2*2H2O at different temperatures indicates that Boltzmann Function is the ideal equation to describe those adsorption isotherms. Its adsorption heat is -13.06kJ/mol and -16.11kJ/mol, respectively. The adsorption equilibrium constants are also given. From the data obtained, there is a thermodynamical possibility to use partial dehydrated magnesium chloride hydrates as an absorbance to clean water vapor contained in bischophite dehydration equipment and let the protection gas HCl recycle in the fluid bed reaction system. |
| |
| Keywords: | magnesium chloride with low water hydration heat adsorption heat differential scanning calorimetry frontal chromatography |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
