Volume 8, Issue 2, March 2020, Page: 47-52
Study of Physical Adsorption for Ethanol Gasoline on Metal Surfaces
Li Na, Research Institute of Petroleum Processing, Beijing, China
Han Lu, Research Institute of Petroleum Processing, Beijing, China
Guo Xin, Research Institute of Petroleum Processing, Beijing, China
Tao Zhiping, Research Institute of Petroleum Processing, Beijing, China
Long Jun, Research Institute of Petroleum Processing, Beijing, China
Received: Apr. 9, 2020;       Published: May 29, 2020
DOI: 10.11648/j.ogce.20200802.13      View  323      Downloads  224
Using molecular simulation technology based on classical mechanic methods, the physical adsorption conformation of the representative conventional gasoline molecule, ethanol molecule and its oxidation intermediates, including acetaldehyde and acetic acid, on different metal surfaces was performed. Furthermore, the interaction energy composed of van der Waals and electrostatic between the absorbed molecules and the metal surfaces was calculated to study the influence of ethanol gasoline on the metal materials in comparison with the conventional gasoline. The results concluded that iron is the most likely to make strong physical adsorption with organic molecules than other surfaces, whether it is conventional gasoline molecule or ethanol molecule, or the oxidation intermediates. It may be related to the crystal configuration, coordination, atomic electron distribution and orbitals distribution of iron surface. The most stable among the studied surfaces is copper, followed by aluminum. Acid molecules, due to the presence of carboxyl group, are the most prone to form strong adsorption on the metal surfaces. The functional additives, such as antioxidant, stabilizer, detergent, dispersant or corrosion inhibitor, were critical for ethanol gasoline to avoid the undesirable influences. ESP distribution and the charges of the module molecules were calculated to make further analysis based on quantum theory.
Ethanol Gasoline, Physical Adsorption, Metal Surface, Molecular Simulation
To cite this article
Li Na, Han Lu, Guo Xin, Tao Zhiping, Long Jun, Study of Physical Adsorption for Ethanol Gasoline on Metal Surfaces, International Journal of Oil, Gas and Coal Engineering. Vol. 8, No. 2, 2020, pp. 47-52. doi: 10.11648/j.ogce.20200802.13
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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