Sweet Corrosion Inhibition on API 5L-B Pipeline Steel

Table 5

Thermodynamic parameters for adsorption of inhibitors at 25°C.

Comp.	Conc.,; ppm	Conc. × 10^6,; M	𝐶/𝜃×10^6	𝐾×10^5	−Δ𝐺^∘,; kJ·Mol^−1
	0.1	0.142	0.696
	0.5	0.711	1.5
Itraconazole	1	1.42	2.17	9.12	44.0
	5	7.11	10.3
	10	14.2	18.1
	15	21.3	23.2
	0.1	0.327	1.39
	0.5	1.63	4.49
Fluconazole	1	3.27	6.51	3.90	41.9
	5	16.3	22.7
	10	32.7	41.8
	15	49.0	57.8