Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media

Bibliographic Details
Main Author:	Oliveira, Rafael Figueiredo de
Language:	English
Published:	University of Akron / OhioLINK 2015
Subjects:	Chemical Engineering Materials Science corrosion inhibitors X52 steel ethanol linalyl formate linalyl acetate linalyl butyrate citronellyl acetate 1-pentylallyl acetate electrochemical impedance spectroscopy EIS scanning electron microscopy SEM white light interferometry WLI
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=akron1448385629

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spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-akron14483856292021-08-03T06:34:09Z Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media Oliveira, Rafael Figueiredo de Chemical Engineering Materials Science corrosion inhibitors X52 steel ethanol linalyl formate linalyl acetate linalyl butyrate citronellyl acetate 1-pentylallyl acetate electrochemical impedance spectroscopy EIS scanning electron microscopy SEM white light interferometry WLI This work describes the testing performed for corrosion control actions for X-52 carbon steel in ethanol media by using inhibitors, the following compounds were included: linalyl formate, linalyl acetate, linalyl butyrate, citronellyl acetate and 1-pentylallyl acetate. The experiments were performed in an electrochemical 3 electrode system with an X-52 steel rotating cylinder electrode (RCE) with rotational speed adjusted to 130 RPM. The system was deaerated by bubbling nitrogen gas into the ethanol solution. The Electrochemical Impedance Spectroscopy (EIS) technique was used to characterize the metal/electrolyte interface. Experimental testing was performed in anhydrous ethanol solution with 5 mM or 10 mM of one inhibitor. Surface analyses for the corroded surfaces were obtained by scanning electron microscopy (SEM) and White light interferometry (WLI). The results suggest that linalyl formate promotes the highest corrosion inhibition efficiency at 10 mM, followed by citronellyl acetate and linalyl butyrate. At this concentration, 1-pentylallyl acetate and linalyl acetate have not promoted corrosion inhibition. At a concentration of 5 mM, linalyl formate, linalyl acetate and linalyl butyrate promoted high inhibition efficiencies during the first hours but none was able to promote a longer protection than one day, possibly due to chemical degradation, chemical reactions and/or reduced surface coverage. The linalyl formate is considered the best chemical for inhibition purposes, especially at the concentration of 10 mM. 2015 English text University of Akron / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=akron1448385629 http://rave.ohiolink.edu/etdc/view?acc_num=akron1448385629 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Chemical Engineering Materials Science corrosion inhibitors X52 steel ethanol linalyl formate linalyl acetate linalyl butyrate citronellyl acetate 1-pentylallyl acetate electrochemical impedance spectroscopy EIS scanning electron microscopy SEM white light interferometry WLI
spellingShingle	Chemical Engineering Materials Science corrosion inhibitors X52 steel ethanol linalyl formate linalyl acetate linalyl butyrate citronellyl acetate 1-pentylallyl acetate electrochemical impedance spectroscopy EIS scanning electron microscopy SEM white light interferometry WLI Oliveira, Rafael Figueiredo de Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media
author	Oliveira, Rafael Figueiredo de
author_facet	Oliveira, Rafael Figueiredo de
author_sort	Oliveira, Rafael Figueiredo de
title	Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media
title_short	Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media
title_full	Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media
title_fullStr	Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media
title_full_unstemmed	Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media
title_sort	evaluation of proposed natural corrosion inhibitors for x-52 carbon steel in ethanol media
publisher	University of Akron / OhioLINK
publishDate	2015
url	http://rave.ohiolink.edu/etdc/view?acc_num=akron1448385629
work_keys_str_mv	AT oliveirarafaelfigueiredode evaluationofproposednaturalcorrosioninhibitorsforx52carbonsteelinethanolmedia
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Evaluation of Proposed Natural Corrosion Inhibitors for X-52 Carbon Steel in Ethanol Media

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