Comparism of Corrosion Inhibitory Effect of 4-[(3,4-Dimethoxybenzylidene)Amino]-1,5- Dimethyl-2-Phenyl-1H-Pyrazol-3(2H)-One in H2SO4 and HCl Environment.|
CHUKWUIKE, VITALIS I. & ECHEM, OGBONDA G.
The inhibition ability of Schiff base, 4-[(3,4-Dimethoxybenzylidene)amino]-
1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one on the corrosion of mild steel in 2M H2SO4 and
HCl was studied by weight loss method.The inhibition efficiency of the Schiff base on mild
steel metal was investigated at four temperatures and concentrations. The highest
concentration 2x10-2M of the Schiff base gave inhibition efficiencies of 91%, 89%, 88%,and
60% at temperatures; 30°C, 40°C, 60°C,and 80°C respectively in H2SO4 medium, the same
concentrations under the same conditions gave inhibition efficiencies of 94%, 95%, 97%,and
98% at temperatures; 30°C, 40°C, 60°C, and 80°C respectively in HCl medium, suggesting
that the inhibitor performs better in HCl medium than in H2SO4 medium at high temperatures.
corrosive environments; temperature; corrosion; Schiff base; mild steel