铝酸钠溶液的低温相变行为（英文）
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摘要
采用差示扫描量热分析(DSC)和拉曼光谱技术研究铝酸钠溶液的低温相变行为。分析结果表明:在低温下,低浓度铝酸钠溶液中NaOH浓度是影响溶液二元共晶点和冰融化温度的关键因素。当温度从123.15升高到283.13 K时,低浓度铝酸钠溶液的相变过程可分为4个阶段:非晶体转化为晶体、三元共晶反应、二元共晶反应和冰的融化。铝酸钠溶液的三元共晶温度为183.15K,并绘制出低温下NaOH-Al(OH)_3-H_2O体系的三元投影相图。
A series of low-temperature phase transitions of sodium aluminate solutions were studied by differential scanning calorimetry(DSC) and Raman spectroscopy. The results indicate that NaOH concentration is a primary impact factor for the binary eutectic point and ice melting temperature of sodium aluminate solutions with low NaOH concentration. In addition, the phase transition process of sodium aluminate solutions with low NaOH concentration from 123.15 to 283.15 K is divided into four steps: non-crystal to crystal, ternary eutectic reaction, binary eutectic reaction and ice melt. The projection phase diagram of NaOH-Al(OH)_3-H_2O system at low temperature was plotted, in which the ternary eutectic temperature for sodium aluminate solutions is 183.15 K.
A series of low-temperature phase transitions of sodium aluminate solutions were studied by differential scanning calorimetry(DSC) and Raman spectroscopy. The results indicate that NaOH concentration is a primary impact factor for the binary eutectic point and ice melting temperature of sodium aluminate solutions with low NaOH concentration. In addition, the phase transition process of sodium aluminate solutions with low NaOH concentration from 123.15 to 283.15 K is divided into four steps: non-crystal to crystal, ternary eutectic reaction, binary eutectic reaction and ice melt. The projection phase diagram of NaOH-Al(OH)_3-H_2O system at low temperature was plotted, in which the ternary eutectic temperature for sodium aluminate solutions is 183.15 K.
引文
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[22]KLAPPER H,JENNISSEN H D,SCHERF C,HAHN T.X-ray topographic and polarisation-optical study of the low-temperature phase transitions and domain structures of KLiSO4[J].Ferroelectrics,2008,376(1):25-45.
[23]LIU Guang-qi,MA Lian-xiang,LIU Jie.Chemistry and chemical engineering property datasheet[M].Beijing:Chemical Industry Press,2002:294-295.(in Chinese)
[24]SCHOONOVER J R,ZHANG S L L,JOHNSTON C T.Raman spectroscopy and multivariate curve resolution of concentrated Al2O3-Na2O-H2O solutions[J].Journal of Raman Spectroscopy,2003,34(6):404-412.
[25]QIU Guo-fang,CHEN Nian-yi,YAN Li-chen,LI Yu.Spectroscopic study on highly concentrated sodium aluminate solutions[J].The Chinese Journal of Nonferrous Metals,1996,6(1):53-56.(in Chinese)
[2]del BARRIO E P,CADORET R,DARANLOT J,ACHCHAP F.Infrared thermography method for fast estimation of phase diagrams[J].Thermochimica Acta,2016,625:9-19.
[3]MESQUIDA P,LE COUTRE A,KRUGER J K.Temperature modulated DSC at intermediate-low temperatures[J].Thermochimica Acta,1990,330:137-144.
[4]LIESEBACH J,LIM M,RADES T.Determination of unfrozen matrix concentrations at low temperatures using stepwise DSC[J].Thermochimica Acta,2004,411:43-51.
[5]CHEN Y X,CHEN X,ZHOU D S,SHEN Q D,HU W B.Low-temperature crystallization of P(VDF-TrFE-CFE)studied by Flash DSC[J].Polymer,2016,84:319-327.
[6]BILOND G,IVAVOVA K,SIMATOS D.Reliability of dynamic mechanical thermal analyses(DMTA)for the study of frozen aqueous systems[J].Journal of Rheology,1994,38(6):1693-1703.
[7]OLEAGAl A,SALAZAR A.Phase transitions at low temperature(<77 K)by means of photopyroelectric calorimetry[J].International Journal of Thermophysics,2012,33(10-11):2159-2166.
[8]SUDHARSANA N,SHARMA A,KUS N,FAUSTO R,RAMOSULUISA M,KRISHNAKUNAR V,PAL R,ROW T N G,NAGALAKSHMI R.Low temperature FTIR,Raman,NMRspectroscopic and theoretical study of hydroxyethylammonium picrate[J].Journal of Molecular Structure,2016,1104:40-51.
[9]SIPOS P,HEFTER G,MAY P M.27Al NMR and Raman spectroscopic studies of alkaline aluminate solutions with extremely high caustic content-Does the octahedral species Al(OH)63-exist in solution?[J].Talanta,2006,70(4):761-765.
[10]SIPOS P,MAY P M,HEFTER G.Quantitative determination of an aluminate dimer in concentrated alkaline aluminate solutions by Raman spectroscopy[J].Dalton Transactions,2006(2):368-375.
[11]WATLING H R,SIPOS P M,BYRNE L,HEFTER G T,MAY P M.Raman,IR,and 27Al-MAS-NMR spectroscopic studies of sodium(hydroxy)aluminates[J].Applied Spectroscopy,1999,53(4):415-422.
[12]SIPOS P.The structure of Al(Ⅲ)in strongly alkaline aluminate solutions-A review[J].Journal of Molecular Liquids,2009,46(1):1-14.
[13]WATLING H.Spectroscopy of concentrated sodium aluminate solutions[J].Applied Spectroscopy,1998,52(2):250-258.
[14]BAIER-SAIP J A,RAMOS-MOOR E,CABRERA A L.Raman study of phase transitions in KNbO3[J].Solid State Communications,2005,135(6):367-372.
[15]ZHANG N N,WEI R S,WANG J Y,HU X B,ZHANG H J,SANTOS C C,GUEDES I.Phase transitions investigation by Raman spectroscopy in highly diluted KTN crystals[J].Journal of Alloys and Compounds,2012,531:14-17.
[16]DURICKOVIC I,CLAVERIE R,BOURSON P,MARCHETTI M,CHASSOTH J M,FONTANA M D.Water-ice phase transition probed by Raman spectroscopy[J].Journal of Raman Spectroscopy,2011,42(6):1408-1412.
[17]RADNAI T,MAY P M,HEFTER G T,SIPOS P.Structure of aqueous sodium aluminate solutions:A solution X-ray diffraction study[J]Journal of Physical Chemistry A,1998,102:7841-7850.
[18]MEGYES T,BALINT S,GROSZ T,RADNAI T,BAKO I,SIPOS P.The structure of aqueous sodium hydroxide solutions:A combined solution X-ray diffraction and simulation study[J].Journal of Chemical Physics,2008,128(4):044501.
[19]DESERT A,GIBAUD A,RIGHIT A,LEITAO U A,MOREIRA R L.An X-ray scattering study of the low-temperature phase transitions of Li KSO4[J].Journal of Physics:Condensed Matter,1995,7(44):8445-8452.
[20]SUZUKI H,XUE Y,NAHERA S,YAMAUCHIA R,ASADAA S,MIZUNOA M,ABEA S,KUNIIB S,KASAYAB M.Phase transitions studied by ultra-low-temperature X-ray diffraction[J].Physica B,2004,345(1-4):239-242.
[21]KOPPELHUBER-BITSEHNAU B,MAUTNER F A,YVON K.Low-temperature structural phase transition in SrMo6S8 studied by X-ray powder diffraction[J].Monatshefte fur Chemie,1990,121(6-7):501-509.
[22]KLAPPER H,JENNISSEN H D,SCHERF C,HAHN T.X-ray topographic and polarisation-optical study of the low-temperature phase transitions and domain structures of KLiSO4[J].Ferroelectrics,2008,376(1):25-45.
[23]LIU Guang-qi,MA Lian-xiang,LIU Jie.Chemistry and chemical engineering property datasheet[M].Beijing:Chemical Industry Press,2002:294-295.(in Chinese)
[24]SCHOONOVER J R,ZHANG S L L,JOHNSTON C T.Raman spectroscopy and multivariate curve resolution of concentrated Al2O3-Na2O-H2O solutions[J].Journal of Raman Spectroscopy,2003,34(6):404-412.
[25]QIU Guo-fang,CHEN Nian-yi,YAN Li-chen,LI Yu.Spectroscopic study on highly concentrated sodium aluminate solutions[J].The Chinese Journal of Nonferrous Metals,1996,6(1):53-56.(in Chinese)