Inhibition of Aluminium Corrosion in 1.0 M HCl by Caffeine: Experimental and DFT Studies

Table 1

Parameters of the modified Langmuir adsorption isotherms.

Isotherm	Equation	(K)		Slope	Intercept	(×10^3 M)	(kJmol^−1)
Villamil et al.		303	0.994	1.3542	0.0007	2.768
		308	0.999	1.6943	0.0005	5.648
		313	0.998	1.8394	0.0007	4.598
		318	0.994	1.9882	0.0012	3.314
		323	0.995	2.3771	0.0014	3.962
El-Awady		303	0.999	0.3421	1.1085	1.738
		308	0.996	0.2442	0.6466	0.444
		313	0.978	0.2413	0.5539	0.197
		318	0.968	0.2435	0.4809	0.094
		323	0.992	0.2226	0.2950	0.021