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DOI Prefix 10.20431 |
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International Journal of Advanced Research in Chemical Science
Volume-3 Issue-2, 2016, Page No: 15-21
Corrosion Inhibitive Effect of 2-(1-(2-Oxo-2H-Chromen-3-Yl) Ethylidene) Hydrazine Carboxamide on Zinc-Aluminum Alloy in 1.8M Hydrochloric Acid
Aladesuyi O.1, Fatile B.O.2, Adedapo E.A.1, Ogunboyejo A.P.1, Ajanaku C.O.1,Olanrewaju I. O.1, Ajani O.O.1, Ajanaku K.O.1*
1.Professor, Dept. of Chemical Engg,Guru GhasidasVishwavidyalaya (Central University), Bilaspur (C.G.), India
2.Assistant Professor, Dept. of Chemical Engg., Guru GhasidasVishwavidyalaya (Central University), Bilaspur (C.G.), India
3.SRF, IIT, Mandi, Himachal Pradesh, India
2.Assistant Professor, Dept. of Chemical Engg., Guru GhasidasVishwavidyalaya (Central University), Bilaspur (C.G.), India
3.SRF, IIT, Mandi, Himachal Pradesh, India
Citation : Aladesuyi O.,Fatile B.O.,Adedapo E.A.,Ogunboyejo A.P.,Ajanaku C.O.,Olanrewaju I. O.,Ajani O.O.,Ajanaku K.O., Corrosion Inhibitive Effect of 2-(1-(2-Oxo-2H-Chromen-3-Yl) Ethylidene) Hydrazine Carboxamide on Zinc-Aluminum Alloy in 1.8M Hydrochloric Acid International Journal of Advanced Research in Chemical Science. 2016;3(2):15-21.
Abstract
The corrosion inhibition of Zinc-Aluminum alloy in 1.8 M of hydrochloric acid solution by 2-(1-(2-oxo-2H-chromen-3-yl) ethylidene) hydrazine carboxamide was carried out using weight loss method. Zinc-Aluminum coupons were immersed in test solution of blank and solutions of 0.001 M, 0.002 M, 0.003 M and 0.004 M of the inhibitor at room temperature and 50oC consistently for seven days duration. The percentage inhibition efficiency (% I.E) and surface coverage (θ) of the Zinc-Aluminum was calculated and result indicated corresponding increase with concentration of inhibitor. The adsorption isotherm of the process was estimated using four adsorption isotherm theories namely: Langmuir, Freundlich, Temkin and Frumkin. The adsorption studies revealed that Langmuir isotherm (R2 = 0.9997) is the best model for the adsorption of 2-(1-(2-oxo-2H-chromen-3-yl) ethylidene) at room temperature and at 50oC on Zinc-Aluminum surface.
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