NaSiCon and Related Phases in the Na-Zr-Si-P-O System

(1)Rare earth phosphates, vanadates, and arsenates were evaluated

1. Literature
   181. Yokokawa, H. Estimation/evaluation on phospour containing compounds. In particukar, SrO-P2O5 double oxides were evaluated.
   182.
   
   (a) Helean, KB., Navrotsky, A., J. Therm. anal. Calorim. 69, 751-771 2002
   (b) Ushakov, SV., Helean, KB., Navrotsky, A., J. Mater. Res.16, 2623-2633 2001.
   
   183.
   
   (a) LaPO4, GdPO4: Thiriet, C., Konings, RJM., Javorsky, P., Magnami, N., Wastin, F., J. Chem. Thermodyn. 37, 131-139 2005.
   (b) LaPO4 Popa, K., Sedmidubsky, D., Benes, O., Thiriet, C., Konings, RJM.,J. Chem. Thermodyn. 38, 825-829 2006.
   (c) EuPO4 SmPO4: Popa, K., Konnings, RJM., Thermochimica Acta 445, 49-52 2006.
   (d) LaPO4 : Gavrichev, KS., Ryumin, MA., Tyurin, AV., Gurevich, VM., Komissarova, LN., Thermochimica Acta 474, 47-51, 2008.
   (e) SmPO4: Gavrichev, KS., Gurevich, VM., Ryumin, MA., Tyurin, AV., Komissarova, LN., Geochemistry Internatinal 53(7), 607-616 2015.
   (f) EuPO4: Gavrichev, KS., Ryumin, MA., Tyurin, AV., Gurevich, VM., Komissarova, LN., Rus. J. Phys. Chem. A 83(6), 901-906 2009.
   (g) GdPO4: Gurevich, VM., Ryumin, MA., Tyurin, AV., Komissarova, LN., Geochmistry International 50 (8), 702-710 2012.
   (h) ErPO4:: Gavrichev, KS., Ryumin, MA., Tyuin, AV., Gurevich, VM., Khoroshilov, AV., Komissarova, LN., Thermochimica Acta 535, 1-7 2012.
   (i) TmPO4: Ryumin, MA., Gurevich, VM., Khoroshilov, AV., Tyurin, AV., Gavrichev, KS., Rus. J. Phys. Chem. A 91(12), 2310-2316 2017.
   (j) YbPO4: Gavrichev, KS., Ryumin, MA., Tyurin, AV., Gurevich,VM., Nikiforova, GE., Komissarova, LN., Inorganic Materials 49(7), 701-708 2013.
   (k) LuPO4: Gavrichev, KS., Smirnova, NN., Gurevich, VM., Danilov, VP., Tyurin, AV., Ryumin, MA., Komissarova, LN., Thermochimica Acta 448, 63-65 2006.
   (l) YPO4: Gavrichev, KS., Ryumin, MA., Tyurin, AV., Gurevich, VM., Komissarova, LN., Geochemistry International 48(9), 932-939 2010.
   (m) ScPO4: Gavrichev, KS., Ryumin, MA., Tyurin, AV., Gurevich, VM., Komissarova, LN., Geochemistry Internatinal 48(4), 390-397 2010.
   (n) TbPO4:Gavrichev, KS., Ryumin, MA., Khoroshilov, AV., Tyurin, AV., Efimov, NN., Gurevich, VM., Nikiforova, GE., Guskov, VN., Golushina, LN., Bryuhanova, KI., Kritskaya, AP., Thermochimica Acta, 641, 64-70 2016.
   (o)HoPO4: Tyurin, AV., Ryumin, MA., Khoroshilov, AV., Gurevich, VM., Gavrichev, KS., Thermochimica Acta 683, 178459 2020.
   (p) PrPO4: Gavrichev, KS., Gurevich, VM., Ryumin, MA., Tyurin, AV., Komissarova, LN., Geochemistry Internatinal 54(4), 362-368 2016.
   (q) NdPO4: Popa, K., Jutier, F., Wastin, F., Konings, RJM., J. Chem. Thermodyn. 38, 1306-1311 2006.
   
   184. Yokokawa, H, Estimation from ZrP2O7(ref 162). see also 181.
   162. Warhus, U., Maier, J., Rabenau, A., J. Solid State Chem. 72, 113-125 1988.
   
2. Correlation
   In addition to the thermodynamic data given in the NBS table, the enthalpy change for formation of rare earth phosphates are given by ref. 182 and entropy and high temperature heat capacity are given by ref. 183. The stabilization energy can be defined as the stability from summation of the enthalpies of the constituent oxides. As shown below, the correlation of such properties with ionic radii is excellent. A similar correlation can be seen for the rare earth vanadates clearly and slight;y with arsenates as seen in figure.
   
   
   Fig. 1 Correlation of Stabilization energy with ionic radii.
   
   
   
   
3. Estimation for InPO4

(2) M(IV) Phosphates and Estimation for ZrP2O7

1. Literature
   196. Rahman, M., Hudon, P., Jung, I.H., Metal. Mater. Trans. B,44B, 837-851 2013.
   
   
   
2. Correlation
3. Estimation of ZrP2O7
   
   

(3)M(II) phosphates

1. Literature
   193. Hudon, P., Jung, IH., Metal. Mater. Trans. B, 46B, 494-522 2015.
   
   
   
2. Correlation
   
   
   Fig. 3 Correlation of Stabilization energy with ionic radii.
   
   
   
   
3. Composition dependence
   
   
   Fig. 3b Composition dependence of Stabilization energy
   
   
   
   

(4) M(I) phosphates

1. Literature
   189. (a) Luff, BB., Reed, RB., J. Chem. Eng. Data 24, 228-229 1979. (b) Luff, BB., Reed, RB., J. Chem. Eng. Data 24, 227-228 1979. 190. Gmati-Khaled, H., Khattech, I., J. Therm. Anal. Calorim. 118, 579-583 2014. 191. Cordfunke, EHP., Ouweltjes, W., J. Chem. Thermodyn. 25, 1011-1016 1993. 192. Cs4P2O7; quaoted in ref 190: Beglov BM. "Thermodynamic analysis of the reactions of formation of condensed lithium, rubidium, and cesium phos- phates," Izv Akad Nauk SSSR. Neorg Mater. 13, 2236?2241 1977.
2. Correlation
   
   
   Fig. 4 Correlation of Stabilization energy with ionic radii.
   
   
   
   

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