正在加载图片...
第9期 武克忠等：贮热材料四氯合金属酸（Ⅱ）二烷基铵固固相变动力学 .931. 的应用条件下，可以优先考虑二元体系， of CioZn/CizZn.Thermochim Acta.2003.397:49 [7]Li W P.Zhang DS.Zhang T P.et al.Study of solid solid phase 参考文献 change of (nC.H2+NH3)2MCl for thermal energy storage- Thermochim Acta.1999.326(1):183 [1]Benson D K,Burrows R W,Webb J D.Solid state phase transi- [8]Wu K Z.Wang X D.Liu X D.Phase diagram of binary system tions in pentaerythritol and related polyhydric alcohols.Solar En- ergy Mater,1986,13:151. CizZn-CisZn.J Univ Sci Technol Beijing.2003.10(4):75 [2]武克忠，张建军，刘晓地，等.硫氰化铵固一固相变贮热及变温 [9]Kissinger E.Reaction kinetics in differential thermal analysis. 红外研究.太阳能学报，1999,20(3)：290 Anal chem,1957,29,1702 [3]Jakubas R.Bator M.Gosniowska M,et al.Crystal structure and [10]Louis E.Comment on Rigorous determination of kinetic parame- phase transition of [(CHs)2NH2]GaCl-J Phys Chem Solids. ters from DTA measurements.J Mater Sci.1984.19:689 1997,58(6):989 [11]Ozawa T.Kinetic analysis of derivative curves in thermal analy- [4]Avitabile G.Ciajolo M R.Napolitano R,et al.Comparative sis.J Therm Anal.1970.2(3):301 studies of layer structure:the crystal structures of bis(mono"n-do- [12]Venkataraman N V.Barman S.Vasudevan S,et al.Structural cylammonium)tetrabromozincate and bis(mono ntridecylammo- analysis of alkyl chain conformation in the layered organic inor- nium)tetrabromozineate.Gazz Chim Ital.1983.113,475 ganic hybrid [(CH)NHs ]2Pbl(n=12.16.18)by spee- [5]Wu K Z,Zhang C X.Li Y J.et al.Subsolidus binary phase dia- troscopy.Chem Phys Lett.2002.358:139 grams of CioZnCl-CieZnCl and CizZnCl-Ci6ZnCl.J Chin Chem [13]Paraggio V,Scderno P,Pavone V.Thermal behavior of mixed Soc,2005,52:45 long chain alkylammonium tetrachlorozincates.Thermochim Ac- [6]Wu K Z.Zuo P,Liu X D,et al.Subsolidus binary phase diagram ta,1983,62(1):77 Nonisothermal kinetics of solid-solid phase transitions in C12 Mn,C14 Mn and their binary system WU Kezhong).LI Jianling?),WANG xingdong?),LIU Xiaodi 1)Department of Chemistry and Material Science,Hebei Normal University,Shijiazhuang 050016,China 2)Metallurgical and Ecological Engineering School.University of Science and Technology Beijing.Beijing 100083.China ABSTRACT Thermotropic phase transitions in the perovskitetype layer compounds n-(Ci2 H2s NH3)2MnCl4 and n-(C14H29NH3)2MnCl4 were synthesized and a series of their mixtures were prepared from ethanol solution. The nonisothermal kinetics of solid-solid phase transitions in C12Mn,C14Mn and their binary system was investi- gated by DSC.Kissinger and Ozawa methods were applied to determine the activation energy and reaction order of the solid-solid transitions,and the results of two methods are coincident.The value of activation energy Ea showed fluctuant with increasing XcM The reaction order of CZn and their binary system is about 1. KEY WORDS storage heat Materials:dodecylammonium tetrachloromanganate;tetradecylammonium tetra chloromanganate:solid-solid phase transition;activation energy的应用条件下可以优先考虑二元体系． 参 考 文 献 ［1］ Benson D KBurrows R WWebb J D．Solid state phase transitions in pentaerythritol and related polyhydric alcohols．Solar Energy Mater198613：151． ［2］ 武克忠张建军刘晓地等．硫氰化铵固－固相变贮热及变温 红外研究．太阳能学报199920（3）：290 ［3］ Jakubas RBator MGosniowska Met al．Crystal structure and phase transition of ［（CH3）2NH2］ GaCl4．J Phys Chem Solids 199758（6）：989 ［4］ Avitabile GCiajolo M RNapolitano Ret al．Comparative studies of layer structure：the crystal structures of bis（mono-n-docylammonium） tetrabromozincate and bis（mono-n-tridecylammonium） tetrabromozincate．Gazz Chim Ital1983113：475 ［5］ Wu K ZZhang C XLi Y Jet al．Subsolidus binary phase diagrams of C10ZnCl－C16ZnCl and C12ZnCl－C16ZnCl．J Chin Chem Soc200552：45 ［6］ Wu K ZZuo PLiu X Det al．Subsolidus binary phase diagram of C10Zn／C12Zn．Thermochim Acta2003397：49 ［7］ Li W PZhang D SZhang T Pet al．Study of solid-solid phase change of （ n－C nH2n＋1NH3）2MCl4 for thermal energy storage． Thermochim Acta1999326（1）：183 ［8］ Wu K ZWang X DLiu X D．Phase diagram of binary system C12Zn－C18Zn．J Univ Sci Technol Beijing200310（4）：75 ［9］ Kissinger E．Reaction kinetics in differential thermal analysis． Anal chem195729：1702 ［10］ Louis E．Comment on Rigorous determination of kinetic parameters from DTA measurements．J Mater Sci198419：689 ［11］ Ozawa T．Kinetic analysis of derivative curves in thermal analysis．J Therm Anal19702（3）：301 ［12］ Venkataraman N VBarman SVasudevan Set al．Structural analysis of alkyl chain conformation in the layered organic-inorganic hybrid ［（C nH2n＋1）NH3］2PbI4（ n＝121618） by spectroscopy．Chem Phys Lett2002358：139 ［13］ Paraggio VScderno PPavonc V．Thermal behavior of mixed long-chain alkylammonium tetrachlorozincates．Thermochim Acta198362（1）：77 Nonisothermal kinetics of solid-solid phase transitions in C12MnC14Mn and their binary system W U Kez hong 12）LI Jianling 2）WA NG xingdong 2）LIU Xiaodi 1） 1） Department of Chemistry and Material ScienceHebei Normal UniversityShijiazhuang050016China 2） Metallurgical and Ecological Engineering SchoolUniversity of Science and Technology BeijingBeijing100083China ABSTRACT Thermotropic phase transitions in the perovskite-type layer compounds n-（C12H25NH3）2MnCl4 and n-（C14H29NH3）2MnCl4were synthesized and a series of their mixtures were prepared from ethanol solution． The nonisothermal kinetics of solid-solid phase transitions in C12MnC14Mn and their binary system was investigated by DSC．Kissinger and Ozawa methods were applied to determine the activation energy and reaction order of the solid-solid transitionsand the results of two methods are coincident．The value of activation energy Ea showed fluctuant with increasing XC12 Mn．The reaction order of C nZn and their binary system is about 1． KEY WORDS storage heat Materials；dodecylammonium tetrachloromanganate；tetradecylammonium tetrachloromanganate；solid-solid phase transition；activation energy 第9期 武克忠等： 贮热材料四氯合金属酸（Ⅱ）二烷基铵固－固相变动力学 ·931·