Vedat ADIGÜZEL, Sevilay DEMİRCİ, Ömer ŞAHİN

NaCl-NaH2PO2-Zn(H2PO2)2-H2O Dörtlü Sisteminin 333.15K’de Katı-Sıvı Faz Dengelerinin İncelenmesi

Katı-sıvı faz dengeleri yardımıyla ayrılmak istenilen kimyasal, hiçbir reaksiyon ve katkı olmadan sadeceçözünürlüğün bileşimle değişimiyle kolayca elde edilebilir. NaCl-NaH2PO2-Zn(H2PO2)2-H2O dörtlü sistemininkatı-sıvı faz dengeleri 333.15K’de izotermal çözünürlük metoduna göre yapılmıştır. Bu tuzların doygunçözeltideki çözünürlük verileri tespit edilmiştir. Bu dörtlü sistemin NaCl, NaH2PO2.H2O ve Zn(H2PO2)2.H2O’denoluşan üç kristallenme alanlı, tek ötonik noktalı basit ötonik tipli olduğu bulunmuştur. Çalışılan bu dörtlü sisteminötonik noktasının bileşimi %6.79 Zn(H2PO2)2, % 43.13 NaH2PO2,%6.71 NaCl ve %43.37 H2O olarak tespitedilmiştir. Ayrıca ötonik noktanın 100 mol tuz bileşimi 5.44 mol Zn(H2PO2)2, 76.62 mol NaH2PO2 ve 17.94 molNaCl olarak hesaplanmıştır. Zn(H2PO2)2’in kristallenme alanı en geniştir, aynı zamanda çözünürlüğü en düşükolandır ve kristalizasyonla kolayca ayrılabilir.

Measurement of Solid Liquid Phase Equilibria For The Quaternary System NaCl-NaH2PO2- Zn(H2PO2)2-H2O at 333.15K

With the aid of solids-liquid phase equilibria, the desired chemical can be obtained simply by changing the solubility of the compound without any reaction or addition. Solid-liquid phase equlibria in the NaCl-NaH2PO2- Zn(H2PO2)2-H2O quaternary system at 333.15K were measured by isothermal solution saturation method. The solubilities of this salts in the saturated solution were determined. This quaternary system belongs to simple invariant type, which consist one invariant point and three crystallization area corresponding to NaCl, NaH2PO2.H2O and Zn(H2PO2)2.H2O. Invariant point composition of this quaternary system were found as %6.79 Zn(H2PO2)2, % 43.13 NaH2PO2,%6.71 NaCl ve %43.37 H2O. Furthermore, the 100 mole salt composition of the invariant point was calculated as 5.44 mole Zn(H2PO2) 2, 76.62 mole NaH2PO2 and 17.94 mole NaCl . The area of crystallization region of Zn(H2PO2)2.H2O is the largest, which indicates that the solubility of Zn(H2PO2)2 in this quaternary system is the lowest and more easily to separate by crystallization.

PDF

___

Civelekoğlu H. 1987. İnorganik teknolojiler. İTÜ Maden Fakültesi ofset Atölyesi, 307s. İstanbul.
Olcay A. 1998. Kimyasal Teknolojiler. Gazi Kitabevi, 310s. Ankara.
Mastai Y. 2012. Advances In Crystallization Processes. InTech, 656s. Rijeka.
Lu B.L., Zhang M.J. 1994. Study on phase-dıagram of the Na+ , NH4 + Cl- , SO4 2- , H2O system at 100- degrees C the fundamental of utilization of NaHCO3 mother liquid of natural soda brines by ammoniation carbonation process, Acta Chimica Sinica, 52 (7): 634-638.
http://english.isl.cas.cn/. (Erişim tarihi: 23/03/2018).
Alisoğlu V. 2002. Analyse Physico-chimique du Systeme Quaternaire Na+ , Mn2+/ Cl- , (H2PO2) - //H2O, Comptes Rendus Chimie, 5: 547-549.
Demirci S., Adıgüzel V., Şahin Ö. 2016. How ZnCl2 And Zn(H2PO2)2 are separated by using solidliquid phase equilibria?, International Conference on Engineering Technology and Applied Sciences, April 21-22, Afyonkarahisar, Turkey.
Wu W., Lv S., Liu X., Qu H., Zhang H., Xu J. 2014. Using TG–FTIR and TG–MS to study thermal degradation of metal hypophosphites, Journal of Thermal Analysis and Calorimetry, 118: 1569- 1575.
Suekkhayad A., Noisong P. 2017. Danvirutai C., Synthesis, thermodynamic and kinetic studies of the formation of LiMnPO4 from a new Mn(H2PO2)2 _H2O precursor, Journal of Thermal Analysis and Calorimetry, 129: 123-134.
Cao H., Zhou H., Bai X., Ma R., Tan L., Wang J. 2016. (Solid + liquid) phase equilibria of (Ca(H2PO2)2 + CaCl2 + H2O) and (Ca(H2PO2)2 + NaH2PO2 + H2O) ternary systems at T = 323.15 K, Journal of Chemical Thermodynamics 93: 255-260.
Yin J., Shi X., Zhou H., Tang J., Dai Y., Bai X. 2017. Solid−Liquid Phase Equilibria of (Ca(H2PO2)2 + H2O), (Ca(H2PO2)2 + CaCl2 + H2O), and (Ca(H2PO2)2 + NaH2PO2 + H2O) Systems, Journal of Chemical and Engineering Data, 62: 744-751.
. Gao S., Shi X., Yin J., Wan Z., Zhou H., Li G. 2016. Solid-liquid phase equilibria of (Mg(H2PO2)2+H2O), (Mg(H2PO2)2 +NaH2PO2+H2O) and (Mg(H2PO2)2+MgCl2+H2O) systems, Fluid Phase Equilibria 411: 7-12.
Shi X., Yin J., Zhou H., Gu X., Dai Y., Tang J. 2017. Solid−Liquid Phase Equilibria of (Mg(H2PO2)2 + NaH2PO2 + H2O) and (Mg(H2PO2)2 + MgCl2 + H2O) Systems at 323.15 K, Journal of Chemical and Engineering Data, 62: 1011-1017.
Deya M.C., Blustein G., Romagnoli R. 2009. Zinc hypophosphite: a suitable additive for anticorrosive paints to promote pigments synergism, Journal of Coatings Technology and Research, 6 (3): 369-376.
Zeng Y., Yi J., Wang H., Zhou G., Liu S. 2005. Theoretical study of H2PO2 - adsorption on Ni(III) and Cu(III) surfaces, Journal of Molecular Structure, 724: 81-86.
Erge H., Adiguzel V., Alisoglu V. 2013. Study of the solubility in Na–Ba–Cl–H2O, Na–Ba–H2PO2– H2O, Na–Cl–H2PO2–H2O, and Ba–Cl–H2PO2–H2O ternaries, and in Na+ , Ba2+/Cl− , (H2PO2) − //H2O reciprocal quaternary system at 0 oC, Fluid Phase Equilibria, 344: 13-18.
Adiguzel V., Erge H., Alisoglu V., Necefoglu H. 2014. Study of the solubility, viscosity and density in Na+ ,Zn2+/Cl- -H2O, Na+ -Zn2+ -(H2PO2) - -H2O, Na+ , Cl- /(H2PO2) - -H2O, and Zn2+,Cl- /(H2PO2) - -H2O ternary systems, and in Na+ ,Zn2+/Cl- ,(H2PO2) - //H2O reciprocal quaternary system at 273.15 K, Journal of Chemical Thermodynamics, 75: 35-44.
Tan L.N., Wang J.M., Zhou H., et al. 2015. Solid–liquid phase equilibria of Ca(H2PO2)2–CaCl2– H2O and Ca(H2PO2)2–NaH2PO2–H2O ternary systems at 298.15 K, Fluid Phase Equilibria, 388: 66- 70.
Demirci S., Adıgüzel V., Şahin Ö. 2016. The Solubilities and Physicochemical Properties of NaH2PO2-NaCl-H2O, NaH2PO2-Zn(H2PO2)2-H2O, and NaCI-Zn(H2PO2)2-H2O Ternary Systems and in NaH2PO2-NaCl-Zn(H2PO2)2-H2O Quaternary System at 298.15 K, Journal of Chemical and Engineering Data, 61 (7): 2292-2298.
Gündüz T. 1999. Kantitatif Analiz Laboratuar Kitabı. Gazi Kitabevi, 312s. Ankara.
Alişoğlu V. 1973. Potasyum ve Manganın Bromür ve Sülfatlarını İhtiva Eden Karşılıklı Su-Tuz Sisteminin Fizikokimyasal Araştırılması. Doktora Tezi, 167s, Bakü.
Adıgüzel V., Demirci S., Şahin Ö., İzgi M.S. 2017. Solid-Liquid Equilibria (SLE) of Ternary System NaCl+Zn(H2PO2)2+H2O at T=(313.15 and 333.15 K), International Conference on Application in Chemistry and Chemical Engineering, October 11-15, Sarajevo.
Demirci S., Adıgüzel V., Şahin Ö., İzgi M.S. 2017. Solubility Behavior of Na+ , Zn2+/ H2PO2 - //H2O Ternary System At Different Temperatures , International Conference on Application in Chemistry and Chemical Engineering, October 11-15, Sarajevo.