20.500.12556/DiRROS-22092 On the use of the Langmuir and other adsorption isotherms in corrosion inhibition In corrosion inhibition studies, the standard adsorption Gibbs energy is often estimated via the linear regression of the Langmuir isotherm in the �∕� = 1∕� + � form, where both the intercept and the slope are estimated, although the Langmuir isotherm requires the slope of 1. Hence, �∕� = 1∕� +�� is actually used, where � is the slope. Herein, a theoretical basis for this equation is established. It is demonstrated to be an effective equation that can decently describe various adsorption models and provide relatively accurate estimates of the standard adsorption Gibbs energy, provided surface coverages are reliably determined experimentally. However, any significant deviation from the slope of 1 signals non-Langmuir adsorption due to inter-adsorbate interactions, multi-site adsorption, or surface heterogeneity. Among these three causes, only attractive inter-adsorbate interactions lead to a slope of less than 1. Langmuir isotherm Flory–Huggins isotherm Temkin isotherm corrosion inhibition standard adsorption free energy Langmuirjeva izoterma Flory–Hugginsova izoterma Temkinova izoterma zaviranje korozije standardna prosta entalpija adsorpcije true false true Elsevier Nizozemska Angleški jezik Slovenski jezik © 2023 The Author(s). Neznano 2025-04-23 12:39:40 2025-04-23 12:39:41 2025-10-24 03:50:31 0000-00-00 00:00:00 2023 0 0 Nasl. z nasl. zaslona; Opis vira z dne 23. 3. 2023; str. 1-15 Vol. 217, [article no.] 111112 Jun. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2022-12-16 2023-03-14 2023-03-20 620.1/.2 1879-0496 10.1016/j.corsci.2023.111112 146303491 RAZ_Kokalj_Anton_2023.pdf RAZ_Kokalj_Anton_2023.pdf 1 4975A672112391283CB4AD0F3D6ECF30 b5708b1f4546e843d883e77655525b7ef6ebaa5eed68a6afd4e0d43045cd00f1 9eaec49d-202f-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31934 Institut Jožef Stefan 0 0 0