Table 5.

The correlation results of the KTZ – CO₂ system provided by semi-empirical models (AARD, R_adj and a₀-a₅ are average absolute relative deviation, adjusted correlation coefficient and adjustable parameters, respectively).

Model	$a_0$	$a_1$	$a_2$	$a_3$	$a_4$	$a_5$	AARD%	Radj
Chrastil	11.107	− 11,945.812	− 39.215	–	–	–	10.01	0.990
Sparks et al.,	5.9141	2.3629	25.666	− 41.5872	–	–	11.52	0.989
K-J	16.75	0.0144	− 1273.9	–	–	–	09.93	0.985
Bian et al.,	− 4.0301	0.0020	− 10,553.88	− 2.2336	− 10.6230	–	09.22	0.991
Bartle et al.,	37.82	− 14,650.1	0.0175	–	–	–	07.55	0.989
MST	− 18,858.47	245,948.22	38.761	–	–	–	09.61	0.996
Jouyban et al.,	− 56.512	− 53.3345	− 0.00002	0.00007	− 1.5936	37.1537	15.11	0.989
Sodeifian et al.,	− 25.7435	− 0.503	3.2028	0.0027	0.003600	− 1910.229	06.94	0.999