2
0
2010
alv
ump
0
journal
Original
Alves, M. B.[Melquizedeque B.]
Umpierre, A. P.[Alexandre P.]
Santos, V. O. J.[Vianney O. Jr.]
Soares, V. C. D.[Valerio C. D.]
Dupont, J.[Jairton]
Rubim, J. C.[Joel C.]
Suarez, P. A. Z.[Paulo A. Z.]
Thermochim. Acta
2010
2020-09-29
Characterization of phase-diagrams of ionic mixtures of 1-n-butyl-3-methylimidazolium chloride and niobium chloride or zinc chloride by differential scanning calorimetry
The thermal behavior of the BMICl/NbCl5 and BMICl/ZnCl2 mixtures was investigated by DSC and correlated with previous studies using Raman spectroscopy. Combining both results, it was possible to built the phase diagram for these mixtures and suggest the formation of different compounds and the equilibria in the euthetic mixtures. The phase diagram of BMICl and NbCl5 mixture showed that probably only one compound is formed at XNbCl5 = 0.50 (BMINbCl6) and euthetic mixtures are present in the 0 less than XNbCl5 less than 0.50 composition range. For the BMICl and ZnCl2, four different compounds were detected: (BMI)2(ZnCl4) for XZnCl2 = 0.35; (BMI)2(Zn2Cl6); (BMI)2(Zn3Cl8) and (BMI)2(Zn4Cl10) for XZnCl2 = 0.70, and between these isoplets euthetic mixtures are formed.
DSC
Phase diagram
Ionic Liquids
Niobium pentachloride
Zinc chloride
1-n-butyl- 3-methylimidazolium
10.1016/j.tca.2010.01.023
1-2
502
20-23
1
InChI=1S/C8H15N2.ClH/c1-3-4-5-10-7-6-9(2)8-10;/h6-8H,3-5H2,1-2H3;1H/q+1;/p-1
FHDQNOXQSTVAIC-UHFFFAOYSA-M
1-butyl-3-methylimidazolium chloride
1-n-butyl-3-methylimidazolium chloride
C8H15ClN2
1
Synthesized by the authors
1
98
2
Estimation
2
InChI=1S/2ClH.Zn/h2*1H;/q;;+2/p-2
JIAARYAFYJHUJI-UHFFFAOYSA-L
zinc chloride
Cl2Zn
1
Commercial source
1
98
2
Estimation
3
InChI=1S/5ClH.Nb/h5*1H;/q;;;;;+5/p-5
YHBDIEWMOMLKOO-UHFFFAOYSA-I
niobium chloride (NbCl5)
niobium chloride
niobium pentachloride
niobium pentachloride (NbCl5)
niobium(V) chloride
pentachloroniobium
Cl5Nb
1
Commercial source
1
98
2
Estimation
1
1
1
Principal objective of the work
VVD
TRC
4/8/2010
1
Normal melting temperature, K
DTA
Crystal
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Crystal
Liquid
Air at 1 atmosphere
1
338.1
5
1
1
2
2
1
1
1
Principal objective of the work
VVD
TRC
4/8/2010
1
Solid-liquid equilibrium temperature, K
DTA
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal
1
Pressure, kPa
Liquid
101
3
1
Mole fraction
2
Liquid
1
0
2
1
338.15
3
1
1
1
0.1
3
1
333.15
3
1
1
1
0.105
3
1
237.05
3
1
1
1
0.185
3
1
231.05
3
1
1
1
0.22
3
1
298.15
3
1
1
1
0.275
3
1
328.15
3
1
1
1
0.33
3
1
333.15
3
1
1
1
0.39
3
1
321.15
3
1
1
1
0.44
3
1
230.05
3
1
1
1
0.51
3
1
369.15
3
1
1
1
0.56
3
1
299.15
3
1
1
1
0.57
3
1
312.15
3
1
1
1
0.615
3
1
291.15
3
1
1
1
0.64
3
1
351.15
3
1
1
1
0.68
3
1
296.15
3
1
1
1
0.69
3
1
343.15
3
1
1
1
0.75
3
1
378.15
3
1
1
1
0.8
3
1
357.15
3
1
1
1
0.87
3
1
289.15
3
1
1
3
3
1
1
1
Principal objective of the work
VVD
TRC
4/8/2010
1
Solid-liquid equilibrium temperature, K
DTA
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal
1
Pressure, kPa
Liquid
101
3
1
Mole fraction
3
Liquid
1
0
2
1
338.15
3
1
1
1
0.1
3
1
290.15
3
1
1
1
0.2
3
1
293.15
3
1
1
1
0.3
3
1
261.05
3
1
1
1
0.4
3
1
309.15
3
1
1
1
0.5
3
1
330.15
3
1
1
1
0.6
3
1
324.15
3
1
1
1
0.7
3
1
315.15
3
1
1