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- W2976785386 abstract "The purpose of this study is to investigate Cinnamon extract as a cheap and environmentally safe corrosion inhibitor for Monel 400 in aerated stagnant 1M hydrochloric solution. The inhibitor has been prepared from the Cinnamon bark and its anticorrosion performance has been studied by the weight loss method. The effect of the inhibitor concentration, the immersion time, and the temperature against inhibitor action is investigated. Adsorption isotherm, Thermodynamic and activation parameters ((Gads, Ea and (Ha) have also been calculated and discussed. The obtained results show that the Cinnamon extract behaves as a good inhibitor for the acidic corrosion of Monel 400. It has been found out that the corrosion rate and the inhibition efficiency depend on the concentration of the inhibitor, the immersion time, and the corrosive media temperature. The maximum inhibition efficiency of 81.55% has been obtained at 2.5 g /L of Cinnamon extract, after 2 hours exposure time, and at 298 K. It has been found out that the inhibitor follows the Freundlich isotherm. The negative free energy of adsorption indicates that the Cinnamon extract is physically adsorbed on metal/solution interface and that the adsorption is spontaneous. The value of apparent activation energy increases with the increment in the inhibitor concentration. The enthalpy of the activation reflects the endothermic nature of the Monel dissolution process." @default.
- W2976785386 created "2019-10-03" @default.
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- W2976785386 date "2019-06-30" @default.
- W2976785386 modified "2023-09-27" @default.
- W2976785386 title "Corrosion Inhibition Properties of Cinnamon Extract on Monel 400 in Hydrochloric Acid Solution" @default.
- W2976785386 doi "https://doi.org/10.15866/ireme.v13i6.17090" @default.
- W2976785386 hasPublicationYear "2019" @default.
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