{"id":3073,"date":"2024-04-30T21:23:00","date_gmt":"2024-04-30T21:23:00","guid":{"rendered":"https:\/\/chempublishers.com\/pjc\/?p=3073"},"modified":"2025-11-20T20:24:29","modified_gmt":"2025-11-20T20:24:29","slug":"pjc-0324","status":"publish","type":"post","link":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2024\/04\/30\/pjc-0324\/","title":{"rendered":"Experimental Study for the Influence of Methyl Substituent&#8217;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3073\" class=\"elementor elementor-3073\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-05988cc e-flex e-con-boxed e-con e-parent\" data-id=\"05988cc\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-c7ddbb3 e-con-full e-flex e-con e-child\" data-id=\"c7ddbb3\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0c42633 elementor-widget elementor-widget-text-editor\" data-id=\"0c42633\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\"><tbody><tr><td><div><strong>Research Article | Open Access<\/strong><\/div><div class=\"item doi\"><span class=\"value\">Volume 14 | Issue 1-2 |\u00a0<a href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2024\/12\/PJC.v14.i1-2.p03.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03<\/a><\/span><\/div><\/td><\/tr><\/tbody><\/table><article class=\"obj_article_details\"><h4 class=\"page_title\">Experimental Study for the Influence of Methyl Substituent&#8217;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid<\/h4><div class=\"row\"><div class=\"main_entry\"><p><a href=\"https:\/\/orcid.org\/0009-0000-1567-0638\" target=\"_blank\" rel=\"noopener\"><span class=\"name\">A.M. Usman\u00a0<\/span><\/a><\/p><p>Department of Chemistry, Federal College of Education (Technical) Bichi, P.M.B. 3473, Kano, Nigeria<\/p><p><span class=\"name\">J. Ambreen<\/span><\/p><p>Department of Chemistry, COMSATS University Islamabad, Park Road, 45550, Islamabad, Pakistan<\/p><p><span class=\"name\">A.A. Muhammad<\/span><\/p><p>Department of Pure and Industrial Chemistry, Bayero University, PMB 3011, Kano. Nigeria<\/p><p><span class=\"name\">N.U. Shehu<\/span><\/p><p>Department of Pure and Industrial Chemistry, Bayero University, PMB 3011, Kano. Nigeria<\/p><p><span class=\"name\">M.U. Sadiq<\/span><\/p><p>Quaid-i-Azam University Islamabad, 45320, Islamabad, Pakistan<\/p><table border=\"0\" width=\"93%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\"><tbody><tr><td align=\"center\" valign=\"top\"><strong>Received<\/strong><br \/>19 Feb, 2024<\/td><td align=\"center\" valign=\"top\"><strong>Accepted<\/strong><br \/>11 Mar, 2024<\/td><td align=\"center\" valign=\"top\"><strong>Published<\/strong><br \/>05 Apr, 2024<\/td><\/tr><\/tbody><\/table><div class=\"item abstract\"><p class=\"ql-align-justify\">Some selected methylquinolines&#8217; performance on inhibition of Aluminum (Al) corrosion and the effect of methyl group at 5,7 and 8 on quinoline investigated in hydrochloric acid experimentally through weight loss, EIS (Impedance Measurement ) and PDP (Potentiodynamic Polarization). For weight loss, five-methyl quinoline (5-MeQ), seven-methyl quinoline (7-MeQ) and eight-methyl quinoline (8-MeQ)\u00a0were used in varying mass and temperature in different concentrations of HCl. The adsorption characteristics of these inhibitors were found to be consistent with Langmuir isotherm; both physical and chemical mechanisms played a significant role. Comparatively, the rate of corrosion, mass loss, inhibition effectiveness, and the degree of surface coverage obtained from the weight loss indicated the superiority of 5-MeQ performance over 7-MeQ and 8-MeQ. The eight-methyl quinoline has the least corrosion inhibition performance under the same conditions. The speed of the inhibition process was found to follow first-order kinetics for all the systems. The surface morphology and the functional group before and after the corrosion were investigated through SEM and FTIR analysis. The Nyquist plot from impedance data and the parameters also indicated the same behaviour as the weight loss. The Tafel plot polarization data and the parameters show the same trends. The results of the EIS. and PDP are found to be relatively consistent with that of weight loss. All the molecules showed outstanding corrosion inhibition efficiency. However, the 5-MeQ molecule gives better Al corrosion inhibition than the other two molecules.<\/p><\/div><div class=\"item abstract\"><div><h3 class=\"label\">How to Cite this paper?<\/h3><div class=\"csl-entry\"><p><strong>APA-7 Style<\/strong><br \/>Usman, A.M., Ambreen, J., Muhammad, A.A., Shehu , N.U., Sadiq, M.U. (2024). Experimental Study for the Influence of Methyl Substituent&#8217;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid.\u00a0<a href=\"https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>, 14(1-2), 18-30<\/a>. https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03<\/p><p><strong>ACS Style<\/strong><br \/>Usman, A.M.; Ambreen, J.; Muhammad, A.A.; Shehu , N.U.; Sadiq, M.U. Experimental Study for the Influence of Methyl Substituent&#8217;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid.\u00a0<a href=\"https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03\" target=\"_blank\" rel=\"noopener\"><em>Pak. J. Chem.<\/em>\u00a02024, 14, 18-30<\/a>. https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03<\/p><p><strong>AMA Style<\/strong><br \/>Usman AM, Ambreen J, Muhammad AA, Shehu NU, Sadiq MU. Experimental Study for the Influence of Methyl Substituent&#8217;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid.\u00a0<a href=\"https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>. 2024; 14(1-2): 18-30<\/a>. https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03<\/p><p><strong>Chicago\/Turabian Style<\/strong><br \/>Usman, A., M., J. Ambreen, A. A. Muhammad, N. U. Shehu , and M. U. Sadiq. 2024. &#8220;Experimental Study for the Influence of Methyl Substituent&#8217;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid&#8221;\u00a0<a href=\"https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>\u00a014, no. 1-2: 18-30<\/a>. https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03<\/p><\/div><\/div><\/div><div class=\"item copyright\"><p><a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\"><img decoding=\"async\" src=\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\" alt=\"Creative Commons License\" \/><\/a><\/p><p>This work is licensed under a\u00a0<a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\">Creative Commons Attribution 4.0 International License<\/a>.<\/p><\/div><\/div><\/div><\/article>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e60db44 e-con-full e-flex e-con e-child\" data-id=\"e60db44\" data-element_type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Research Article | Open AccessVolume 14 | Issue 1-2 |\u00a0https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03 Experimental Study for the Influence of Methyl Substituent&#8217;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid A.M. Usman\u00a0 Department of Chemistry, Federal College of Education (Technical) Bichi, P.M.B. 3473, Kano, Nigeria J. Ambreen Department of Chemistry, COMSATS University Islamabad, Park Road, 45550, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3073","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Experimental Study for the Influence of Methyl Substituent&#039;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid - Pakistan Journal of Chemistry<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2024\/04\/30\/pjc-0324\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Experimental Study for the Influence of Methyl Substituent&#039;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid - Pakistan Journal of Chemistry\" \/>\n<meta property=\"og:description\" content=\"Research Article | Open AccessVolume 14 | Issue 1-2 |\u00a0https:\/\/doi.org\/10.15228\/2024.v14.i1-2.p03 Experimental Study for the Influence of Methyl Substituent&#8217;s Position on Quinoline for Inhibition of Aluminium Corrosion in Hydrochloric Acid A.M. 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