Table 4 Thermodynamic activation parameters of X-65 in absence and presence of PAS at different temperature.

From: Experimental and theoretical assessments of an innovative star-shaped polyamine surfactant designed for X-65 steel corrosion mitigation in acidic environment

Inh

Arrhenius

  

Transition state

   
 

Slope

R2

Ea

(kJ mol-1)

Slope

Intercept

ΔHa

(kJ mol-1)

ΔSa

(J mol-1)

1 M HCl

-4669.04

0.9757

38.818

-4356.6

2.982

36.221

-172.722

PAS

-5922.97

0.9671

49.243

-5610.5

3.927

46.645

-164.869

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