NRTL

Back to NRTL (Ternary)

ln(γ_i) = (summation from j=1 to 3 of [x_j × τ_ji × G_ji] / summation from k=1 to 3 of [x_k × G_ki]) + summation from j=1 to 3 of [x_j × G_ij / summation from k=1 to 3 of [x_k × G_kj]] × {τ_ji - summation from m=1 to 3 of [x_m × τ_mj × G_mj] / summation from k=1 to 3 of [x_k × G_kj]}

where G_kj = exp(-α_ij × τ_ij)

and α_ij and τ_ij are binary NTRL parameters at a given temperature.

τ₁₂ = binary parameter c₁
τ₂₁ = binary parameter c₂
α₁₂ = binary parameter k
α₂₁ = binary parameter k
τ_ii = 0
α_ii is not considered.