Thermodynamic study was carried out on the reaction EuCl_(3(s))+(v/2)Al_2Cl_(6(g))= EuAl_vCl_((3v)+3(g))byquenching experiments within 6 3 8 ～ 7 6 2 K and 0 . 0 3 ～ 0 . 1 4 MPa . The results suggested that theEuAl_3...Thermodynamic study was carried out on the reaction EuCl_(3(s))+(v/2)Al_2Cl_(6(g))= EuAl_vCl_((3v)+3(g))byquenching experiments within 6 3 8 ～ 7 6 2 K and 0 . 0 3 ～ 0 . 1 4 MPa . The results suggested that theEuAl_3Cl_(12(g)) complex was the predormnant species. The equilibrium constants of the reaction were measured. The reaction enthalpy and entropy derived from the measurements were and展开更多
Thermodynamic study on the reaction PrCl 3(s) +( x /2) Al 2Cl 6(g) =PrAl x Cl 3 x +3(g) was carried out by quenching experiments within 604～827 K and 0 05～0 15 MPa. The results suggested that...Thermodynamic study on the reaction PrCl 3(s) +( x /2) Al 2Cl 6(g) =PrAl x Cl 3 x +3(g) was carried out by quenching experiments within 604～827 K and 0 05～0 15 MPa. The results suggested that the PrAl 3Cl 12(g) complex was the predominant species. The equilibrium constants of the reaction were measured. The reaction enthalpy and entropy derived from the measurements were ΔH 0 298 =(38 2±2) kJ·mol -1 and ΔS 0 298 =(1 2±3) J·mol -1 ·K -1 .展开更多
The bis(N-ethyl-5-methylsalicylaldimine)nickel(II) [Ni(5-me-saletN)2] complex was synthesized and characterized by elemental analyses, FT-IR, TG-DTA, mass spectrometry and vapour pressure measurement studies. The TG c...The bis(N-ethyl-5-methylsalicylaldimine)nickel(II) [Ni(5-me-saletN)2] complex was synthesized and characterized by elemental analyses, FT-IR, TG-DTA, mass spectrometry and vapour pressure measurement studies. The TG curve of the complex showed a single-step weight loss commencing from 490 K to nil residue at 600 K, without competing fragmentation step. The non-isothermal vaporization activation energy value determined by Coats-Redfern method yielded the value of 93.5 ± 7 kJmol–1. The dynamic TG run proved the complex to be completely volatile. And the equilibrium vapour pressure of the complex over the temperature range of 421 - 524 K, determined by the TG-based transpiration technique yielded the value of 94.2 ± 1.2 kJmol–1 for its standard enthalpy of vaporization . The entropy of vaporization was calculated from the intercept and found to be 249.4 ± 2.6 Jmol–1•K–1.展开更多
文摘Thermodynamic study was carried out on the reaction EuCl_(3(s))+(v/2)Al_2Cl_(6(g))= EuAl_vCl_((3v)+3(g))byquenching experiments within 6 3 8 ～ 7 6 2 K and 0 . 0 3 ～ 0 . 1 4 MPa . The results suggested that theEuAl_3Cl_(12(g)) complex was the predormnant species. The equilibrium constants of the reaction were measured. The reaction enthalpy and entropy derived from the measurements were and
文摘Thermodynamic study on the reaction PrCl 3(s) +( x /2) Al 2Cl 6(g) =PrAl x Cl 3 x +3(g) was carried out by quenching experiments within 604～827 K and 0 05～0 15 MPa. The results suggested that the PrAl 3Cl 12(g) complex was the predominant species. The equilibrium constants of the reaction were measured. The reaction enthalpy and entropy derived from the measurements were ΔH 0 298 =(38 2±2) kJ·mol -1 and ΔS 0 298 =(1 2±3) J·mol -1 ·K -1 .
文摘The bis(N-ethyl-5-methylsalicylaldimine)nickel(II) [Ni(5-me-saletN)2] complex was synthesized and characterized by elemental analyses, FT-IR, TG-DTA, mass spectrometry and vapour pressure measurement studies. The TG curve of the complex showed a single-step weight loss commencing from 490 K to nil residue at 600 K, without competing fragmentation step. The non-isothermal vaporization activation energy value determined by Coats-Redfern method yielded the value of 93.5 ± 7 kJmol–1. The dynamic TG run proved the complex to be completely volatile. And the equilibrium vapour pressure of the complex over the temperature range of 421 - 524 K, determined by the TG-based transpiration technique yielded the value of 94.2 ± 1.2 kJmol–1 for its standard enthalpy of vaporization . The entropy of vaporization was calculated from the intercept and found to be 249.4 ± 2.6 Jmol–1•K–1.
