Inhibition of corrosion of mild steel in Tetraoxosulphate (vi) acid by Lisinopril and the effect of halide ions,:- Okorie, Rita O.
ABSTRACT
The inhibition of corrosion of
mild steel in Tetraoxosulphate (vi) acid by Lisinopril and the effect of halide
ions, have been studied using Thermometric, gasometric. The results obtained
shows that the corrosion rate of various concentration of H2SO4 were found to
vary with concentration of H2SO4. The highest and least values of corrosion
rate were obtained at H2SO4 concentration of 2.5 and 1.0 respectively. It was
seen that corrosion of mild steel in 2.5M H2SO4 vary with temperature therefore
corrosion rate increase as the temperature increase and with increase in time.
The inhibition efficiency of Lisinopril was optimum at 323k with the value
range from 60.47 to 76.16%. the values of inhibition efficiency, degree of surface
coverage and corrosion rate for the joint effect of halides were found to vary
with temperature and concentration. The optimum values of inhibition efficiency
were obtained at 323 and 303k showing that this compound functions as an
inhibitor at specific temperature. The average value of activation energy (Ea)
was found to be higher than the average obtained for the blank indicating that
lisinopril retards the corrosion of mild steel in H2SO4. The synergistic
combination with KI, KCI, and KBr were all negative indication that absorption
of lisinopril antagonized the adsorption of the respective halides. The
adsorption inhibition of lisinopril on mild steel surface as revealed by
thermodynamic is spontaneous and exothermic. Therefore the use of lisnopril as
corrosion inhibitor is recommended.
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OKORIE, O (2023). Inhibition of corrosion of mild steel in Tetraoxosulphate (vi) acid by Lisinopril and the effect of halide ions,:- Okorie, Rita O.. Repository.mouau.edu.ng: Retrieved May 03, 2024, from https://repository.mouau.edu.ng/work/view/inhibition-of-corrosion-of-mild-steel-in-tetraoxosulphate-vi-acid-by-lisinopril-and-the-effect-of-halide-ions-okorie-rita-o-7-2
OKORIE, OKORIE. "Inhibition of corrosion of mild steel in Tetraoxosulphate (vi) acid by Lisinopril and the effect of halide ions,:- Okorie, Rita O." Repository.mouau.edu.ng. Repository.mouau.edu.ng, 15 Dec. 2023, https://repository.mouau.edu.ng/work/view/inhibition-of-corrosion-of-mild-steel-in-tetraoxosulphate-vi-acid-by-lisinopril-and-the-effect-of-halide-ions-okorie-rita-o-7-2. Accessed 03 May. 2024.
OKORIE, OKORIE. "Inhibition of corrosion of mild steel in Tetraoxosulphate (vi) acid by Lisinopril and the effect of halide ions,:- Okorie, Rita O.". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 15 Dec. 2023. Web. 03 May. 2024. < https://repository.mouau.edu.ng/work/view/inhibition-of-corrosion-of-mild-steel-in-tetraoxosulphate-vi-acid-by-lisinopril-and-the-effect-of-halide-ions-okorie-rita-o-7-2 >.
OKORIE, OKORIE. "Inhibition of corrosion of mild steel in Tetraoxosulphate (vi) acid by Lisinopril and the effect of halide ions,:- Okorie, Rita O." Repository.mouau.edu.ng (2023). Accessed 03 May. 2024. https://repository.mouau.edu.ng/work/view/inhibition-of-corrosion-of-mild-steel-in-tetraoxosulphate-vi-acid-by-lisinopril-and-the-effect-of-halide-ions-okorie-rita-o-7-2