The standard Gibbs energies of transfer (Δ tr G 0) for potassium tetraphenylborate (KBPh 4) have been studied in the systems of water and water +1 propanol (PrOH) as well as water and water + t butyl alcohol (TBA) at...The standard Gibbs energies of transfer (Δ tr G 0) for potassium tetraphenylborate (KBPh 4) have been studied in the systems of water and water +1 propanol (PrOH) as well as water and water + t butyl alcohol (TBA) at 298.15?K. The results show that -Δ tr G 0 exhibits a complicated changing pattern with the mole fraction of TBA( x (TBA)) or PrOH ( x (PrOH)), and Δ tr G 0 has the a maximum value at x (TBA) = 0.2 or x (PrOH)=0.2. Especially, -Δ tr G 0 of KBPh 4 changes unusually with increasing x (TBA) when x (TBA) < 0.05. The reasons for these changes were analyzed and discussed.展开更多
Solubilities of ribidium tetraphenylborate in water, methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol and l-octanol at 288.15, 298.15, 308.15, 318.15, 328.15 K have been determined by spectrophotometry....Solubilities of ribidium tetraphenylborate in water, methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol and l-octanol at 288.15, 298.15, 308.15, 318.15, 328.15 K have been determined by spectrophotometry. The standard Gibbs energy of transfer of ribidium tetraphenylborate from water to straight-chain n-alkanols and the primary medium effect of rubidium tetraphenylborate from 288.15 to 328.15 K have been calculated. Furthermore, the contribution of microscopic interactions to the standard Gibbs energy of transfer of rubidium tetraphenylborate in calculated and discussed.展开更多
According to the quasi paraboloid rule, a computer program was developed and the Gibbs free energy functions of some compounds in Sialon system were assessed and predicted. It makes the theoretical design of the Sial...According to the quasi paraboloid rule, a computer program was developed and the Gibbs free energy functions of some compounds in Sialon system were assessed and predicted. It makes the theoretical design of the Sialon materials possible.展开更多
Based on principles of thermodynamics, it is derivd that in binary system the quasi-parabola regulation must be obeyedby the standard Gibbs free energy of formation of a compound.Extending to ternary system a quasi-pa...Based on principles of thermodynamics, it is derivd that in binary system the quasi-parabola regulation must be obeyedby the standard Gibbs free energy of formation of a compound.Extending to ternary system a quasi-paraboloid regulation also must be done. The stability of some intermetallic compounds in binary systems is decided展开更多
The Gibbs standard free energies of formation of the fluorides and the oxyfluorides of Y. Gd. Dy, Tb,Ho. Er and Yb were measured by using either a calcium concentration cell with Caβ' / β+x-Al_2O_3 solidelectrol...The Gibbs standard free energies of formation of the fluorides and the oxyfluorides of Y. Gd. Dy, Tb,Ho. Er and Yb were measured by using either a calcium concentration cell with Caβ' / β+x-Al_2O_3 solidelectrolyte or an oxygen concentration cell with calcia stabilized zirconia (CSZ) solid electrolyte, accordingto which the phase stability diagram of RE-O-F systems were determined.展开更多
The compounds of RESF. RE = La. Ce. Pr, Y and Tb, were made from RE_2S_3 and REF_3 by high tem-perature solid reaction. The Gibbs standard free energies of formation of RESF were measured by galvaniccell technique by ...The compounds of RESF. RE = La. Ce. Pr, Y and Tb, were made from RE_2S_3 and REF_3 by high tem-perature solid reaction. The Gibbs standard free energies of formation of RESF were measured by galvaniccell technique by using CSZ as solid electrolyte. The results of this work together with the Gibbs standardfree energies of formation ol RE,S. . REzSa and REFa were used to determine the phase diagrams ofRESF systems in this paper.展开更多
文摘The standard Gibbs energies of transfer (Δ tr G 0) for potassium tetraphenylborate (KBPh 4) have been studied in the systems of water and water +1 propanol (PrOH) as well as water and water + t butyl alcohol (TBA) at 298.15?K. The results show that -Δ tr G 0 exhibits a complicated changing pattern with the mole fraction of TBA( x (TBA)) or PrOH ( x (PrOH)), and Δ tr G 0 has the a maximum value at x (TBA) = 0.2 or x (PrOH)=0.2. Especially, -Δ tr G 0 of KBPh 4 changes unusually with increasing x (TBA) when x (TBA) < 0.05. The reasons for these changes were analyzed and discussed.
文摘Solubilities of ribidium tetraphenylborate in water, methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol and l-octanol at 288.15, 298.15, 308.15, 318.15, 328.15 K have been determined by spectrophotometry. The standard Gibbs energy of transfer of ribidium tetraphenylborate from water to straight-chain n-alkanols and the primary medium effect of rubidium tetraphenylborate from 288.15 to 328.15 K have been calculated. Furthermore, the contribution of microscopic interactions to the standard Gibbs energy of transfer of rubidium tetraphenylborate in calculated and discussed.
文摘According to the quasi paraboloid rule, a computer program was developed and the Gibbs free energy functions of some compounds in Sialon system were assessed and predicted. It makes the theoretical design of the Sialon materials possible.
文摘Based on principles of thermodynamics, it is derivd that in binary system the quasi-parabola regulation must be obeyedby the standard Gibbs free energy of formation of a compound.Extending to ternary system a quasi-paraboloid regulation also must be done. The stability of some intermetallic compounds in binary systems is decided
文摘The Gibbs standard free energies of formation of the fluorides and the oxyfluorides of Y. Gd. Dy, Tb,Ho. Er and Yb were measured by using either a calcium concentration cell with Caβ' / β+x-Al_2O_3 solidelectrolyte or an oxygen concentration cell with calcia stabilized zirconia (CSZ) solid electrolyte, accordingto which the phase stability diagram of RE-O-F systems were determined.
文摘The compounds of RESF. RE = La. Ce. Pr, Y and Tb, were made from RE_2S_3 and REF_3 by high tem-perature solid reaction. The Gibbs standard free energies of formation of RESF were measured by galvaniccell technique by using CSZ as solid electrolyte. The results of this work together with the Gibbs standardfree energies of formation ol RE,S. . REzSa and REFa were used to determine the phase diagrams ofRESF systems in this paper.
