10 English eng Obi-Egbedi, N.O. Contributor <p><ul id="issue-navigation" class="issue-navigation u-margin-s-bottom u-bg-grey1" style="box-sizing: border-box; margin-top: 0px; margin-right: 0px; margin-bottom: 16px !important; margin-left: 0px; padding: 0px; list-style: none; background-color: rgb(245, 245, 245) !important; overflow: hidden; font-size: 16px; line-height: 24px; color: rgb(31, 31, 31); font-family: ElsevierSans, Arial, Helvetica, Roboto, "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", STIXGeneral, "Cambria Math", "Arial Unicode MS", sans-serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"></ul></p><div class="Abstracts u-font-serif text-s" id="abstracts" style="box-sizing: border-box; margin: 0px; padding: 0px; font-family: ElsevierGulliver, Georgia, "Times New Roman", Times, STIXGeneral, "Cambria Math", "Lucida Sans Unicode", "Microsoft Sans Serif", "Segoe UI Symbol", "Arial Unicode MS", serif !important; --sd-ui-line-height: calc(1em + 10px); font-size: 0.8rem; line-height: var(--sd-ui-line-height); color: rgb(31, 31, 31); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><div class="abstract author" id="ceab10" style="box-sizing: border-box; margin: 0px 0px 8px; padding: 0px;"><div id="ceabs10" style="box-sizing: border-box; margin: 0px; padding: 0px;"><p id="sp005" style="box-sizing: border-box; margin: 0px 0px 16px; padding: 0px;">The adsorption and inhibition effect of xanthione (XION) on mild steel in 0.5&nbsp;M H<sub style="box-sizing: border-box; margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em;">2</sub>SO<sub style="box-sizing: border-box; margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em;">4</sub><span>&nbsp;</span>at 303–333&nbsp;<span style="box-sizing: border-box; margin: 0px; padding: 0px;">K were studied using gravimetric and UV–visible spectrophotometric methods. The results obtained show that XION acts as an effective<span>&nbsp;</span><a href="https://www.sciencedirect.com/topics/chemistry/corrosion-inhibitor" title="Learn more about corrosion inhibitor from ScienceDirect's AI-generated Topic Pages" class="topic-link" style="box-sizing: border-box; margin: 0px; padding: 0px; background-color: transparent; word-break: break-word; text-decoration: underline 1px rgb(31, 31, 31); color: rgb(31, 31, 31); text-underline-offset: 1px;">corrosion inhibitor</a><span>&nbsp;</span>for mild steel in sulphuric acid and inhibition efficiency reaches 98.0% at a very low inhibitor concentration of 10</span>&nbsp;<span style="box-sizing: border-box; margin: 0px; padding: 0px;">μM. Inhibition efficiency was found to increase with increase in XION concentration but decreased with temperature suggesting<span>&nbsp;</span><a href="https://www.sciencedirect.com/topics/chemistry/physical-adsorption" title="Learn more about physical adsorption from ScienceDirect's AI-generated Topic Pages" class="topic-link" style="box-sizing: border-box; margin: 0px; padding: 0px; background-color: transparent; word-break: break-word; text-decoration: underline 1px rgb(31, 31, 31); color: rgb(31, 31, 31); text-underline-offset: 1px;">physical adsorption</a><span>&nbsp;</span>mechanism. Arrhenius law and its transition equation lead to estimate the activation parameters of the corrosion process. XION inhibits the corrosion of mild steel effectively at moderate temperature and adsorbs according to the Langmuir isotherm. Thermodynamic parameters governing the adsorption process have been calculated and discussed. The UV–visible absorption spectra of the solution containing the inhibitor after the immersion of mild steel specimen indicate the formation of a XEN–Fe complex. Attempt to correlate the molecular structure to quantum chemical indices was made using density functional theory (DFT).</span></p></div></div></div> Elsevier Ltd. April 2013 pdf Arabian Journal of Chemistry Xanthione: A new and effective corrosion inhibitor for mild steel in sulphuric acid solution mixed material Elsevier Ltd.