Justin C Emereole, Chigoziri N Njoku, Alexander I Ikeuba, Ifenyinwa C Ekeke, Emmanuel Yakubu, Ogbonna C Nkuzinna, Nnamdi A Nnodum, Madueke S Nwakaudu
{"title":"玉米叶提取物在酸性介质中抑制铝腐蚀特性的响应面方法和实验评估","authors":"Justin C Emereole, Chigoziri N Njoku, Alexander I Ikeuba, Ifenyinwa C Ekeke, Emmanuel Yakubu, Ogbonna C Nkuzinna, Nnamdi A Nnodum, Madueke S Nwakaudu","doi":"10.1108/acmm-03-2024-2988","DOIUrl":null,"url":null,"abstract":"<h3>Purpose</h3>\n<p>This study aims to develop eco-friendly corrosion inhibitors for aluminum in acidic media by evaluating the corrosion inhibition properties of corn leaf extract (CLE) using response surface methodology (RSM) and experiments.</p><!--/ Abstract__block -->\n<h3>Design/methodology/approach</h3>\n<p>The RSM was combined with experiments to evaluate the corrosion inhibition properties of CLE on aluminum in acid media.</p><!--/ Abstract__block -->\n<h3>Findings</h3>\n<p>The effectiveness of the inhibition increased with increasing inhibitor concentration and time but decreased with increasing temperature. The corrosion inhibition mechanism revealed the corrosion process is spontaneous exothermic physical adsorption. Thermodynamic parameters revealed an activation energy between 32.1 and 24.7 kJ/mol, energy of adsorption between −14.53 and −65.07 and Gibbs free energy of −10.12 kJ/mol which indicated the CLE exothermically spontaneously physisorbed. A model was generated to estimate the effect of the process parameters (inhibitor concentration, reaction time and temperature) using the RSM. Optimization of the process factors was also carried out using the RSM. The percentage inhibition efficiency obtained experimentally (85.61%) was closely comparable to 84.89% obtained by the theoretical technique (RSM). The SEM observations of the inhibited and uninhibited Al samples demonstrated that CLE is an effective corrosion inhibitor for aluminum in acid media.</p><!--/ Abstract__block -->\n<h3>Originality/value</h3>\n<p>Results herein provide novel information on the possible application of CLEs as effective eco-friendly corrosion inhibitors.</p><!--/ Abstract__block -->","PeriodicalId":8217,"journal":{"name":"Anti-corrosion Methods and Materials","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Response surface methodology and experimental evaluation of the inhibitory properties of corn leaf extract for aluminum corrosion in acid media\",\"authors\":\"Justin C Emereole, Chigoziri N Njoku, Alexander I Ikeuba, Ifenyinwa C Ekeke, Emmanuel Yakubu, Ogbonna C Nkuzinna, Nnamdi A Nnodum, Madueke S Nwakaudu\",\"doi\":\"10.1108/acmm-03-2024-2988\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Purpose</h3>\\n<p>This study aims to develop eco-friendly corrosion inhibitors for aluminum in acidic media by evaluating the corrosion inhibition properties of corn leaf extract (CLE) using response surface methodology (RSM) and experiments.</p><!--/ Abstract__block -->\\n<h3>Design/methodology/approach</h3>\\n<p>The RSM was combined with experiments to evaluate the corrosion inhibition properties of CLE on aluminum in acid media.</p><!--/ Abstract__block -->\\n<h3>Findings</h3>\\n<p>The effectiveness of the inhibition increased with increasing inhibitor concentration and time but decreased with increasing temperature. 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Response surface methodology and experimental evaluation of the inhibitory properties of corn leaf extract for aluminum corrosion in acid media
Purpose
This study aims to develop eco-friendly corrosion inhibitors for aluminum in acidic media by evaluating the corrosion inhibition properties of corn leaf extract (CLE) using response surface methodology (RSM) and experiments.
Design/methodology/approach
The RSM was combined with experiments to evaluate the corrosion inhibition properties of CLE on aluminum in acid media.
Findings
The effectiveness of the inhibition increased with increasing inhibitor concentration and time but decreased with increasing temperature. The corrosion inhibition mechanism revealed the corrosion process is spontaneous exothermic physical adsorption. Thermodynamic parameters revealed an activation energy between 32.1 and 24.7 kJ/mol, energy of adsorption between −14.53 and −65.07 and Gibbs free energy of −10.12 kJ/mol which indicated the CLE exothermically spontaneously physisorbed. A model was generated to estimate the effect of the process parameters (inhibitor concentration, reaction time and temperature) using the RSM. Optimization of the process factors was also carried out using the RSM. The percentage inhibition efficiency obtained experimentally (85.61%) was closely comparable to 84.89% obtained by the theoretical technique (RSM). The SEM observations of the inhibited and uninhibited Al samples demonstrated that CLE is an effective corrosion inhibitor for aluminum in acid media.
Originality/value
Results herein provide novel information on the possible application of CLEs as effective eco-friendly corrosion inhibitors.
期刊介绍：
Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world.
Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties.
• New methods, materials and software
• New developments in research and industry
• Stainless steels
• Protection of structural steelwork
• Industry update, conference news, dates and events
• Environmental issues
• Health & safety, including EC regulations
• Corrosion monitoring and plant health assessment
• The latest equipment and processes
• Corrosion cost and corrosion risk management.
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