Open AccessStudy of Kinetics and Inhibition Efficiency by Isoquinoline-5-Carboxaldehyde for Carbon Steel Corrosion in HCl
Author(s) -
Raheem A. H. Al-Uqaily,
Subhi A. H. Al-Bayaty,
Sattar O. Maiws Al-Mayyahi
Publication year - 2020
Publication title -
xi'nan jiaotong daxue xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.308
H-Index - 21
ISSN - 0258-2724
DOI - 10.35741/issn.0258-2724.55.3.31
Subject(s) - hydrochloric acid , corrosion , adsorption , enthalpy , kinetics , chemistry , metal , nitrogen , nuclear chemistry , corrosion inhibitor , isoquinoline , carbon steel , inorganic chemistry , materials science , organic chemistry , thermodynamics , physics , quantum mechanics
In this paper, a study of kinetics and inhibition efficiency by isoquinoline-5-carboxaldehyde of carbon steel corrosion in hydrochloric acid is conducted. The method of weight loss and hydrogen gas evolution was used with various inhibitor concentrations ranging from 150-450 parts per million with several temperatures from 40-60°C. Our results showed that increasing inhibitor concentrations and temperature led to an increase in the inhibition efficiency; this indicates both the adsorption of a film layer on a metal surface and the efficacy of the inhibitor by the attendance of oxygen and nitrogen atoms that have an active part in the adsorption process. In this study entropy, activation, and enthalpy energy were calculated.