<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0122-5383</journal-id>
<journal-title><![CDATA[CT&F - Ciencia, Tecnología y Futuro]]></journal-title>
<abbrev-journal-title><![CDATA[C.T.F Cienc. Tecnol. Futuro]]></abbrev-journal-title>
<issn>0122-5383</issn>
<publisher>
<publisher-name><![CDATA[Instituto Colombiano del Petróleo (ICP) - ECOPETROL S.A.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-53832022000100085</article-id>
<article-id pub-id-type="doi">10.29047/01225383.389</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[EFFECT OF THE STRUCTURAL CHARACTERISTICS OF NAPHTHENIC ACIDS ON THE CORROSION KINETICS OF AN AISI SAE 1005]]></article-title>
<article-title xml:lang="es"><![CDATA[EFECTO DE LAS CARACTERÍSTICAS ESTRUCTURALES DE LOS ÁCIDOS NAFTÉNICOS EN LA CINÉTICA DE CORROSIÓN DE UN ACERO AISI SAE 1005]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mejía-Miranda]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Becerra-Quiroga]]></surname>
<given-names><![CDATA[Haydee]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peña-Ballesteros]]></surname>
<given-names><![CDATA[Darío]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Laverde-Cataño]]></surname>
<given-names><![CDATA[Dionisio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sarmiento-Klapper]]></surname>
<given-names><![CDATA[Helmuth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Colombiano del Petróleo, ECOPETROL  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Center for Materials Research  ]]></institution>
<addr-line><![CDATA[Celle ]]></addr-line>
<country>Germany</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>12</volume>
<numero>1</numero>
<fpage>85</fpage>
<lpage>93</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-53832022000100085&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-53832022000100085&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-53832022000100085&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Processing crudes with high naphthenic acid content causes corrosion problems on the crude oil distillation units. The total acid number (TAN) is commonly used to evaluate the corrosivity of crude oils; thus for decision-making related to corrosion mitigation and control in refineries. However, the TAN only represents the number of carboxylic groups present in the crude oil and does not consider the structural characteristics of the naphthenic acids, nor their reactivity, which are highly relevant to corrosion. On the other hand, the study of naphthenic acids as fractions with specific structural characteristics should enable the identification of differences in the corrosivity of crude oil with the same naphthenic acid concentration. In this research work, the fractioning of a commercial mixture of naphthenic acids was performed using the ionic strength of their respective salts. The structural characterization of the obtained fractions was conducted using Fourier-transform infrared and mass spectroscopy, gel permeation chromatography, and nuclear magnetic resonance. Furthermore, the corrosion rate of AISI SAE 1005 steel exposed to each fraction of naphthenic acids in the temperature range between 270 and 350 °C was determined. Based on these results, a kinetic model of parallel reactions for predicting the concentration of dissolved iron in crude oil containing a mixture of naphthenic acids is proposed and validated.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El procesamiento de crudos con alto contenido de ácidos nafténicos causa problemas de corrosión en las unidades de detilación. El Número Total Ácido (TAN) es comunmente usado para evaluar la corrosividad de crudos, y por lo tanto es un parametro usado para la toma de decisiones relacionadas con el control de la corrosión de la refinerías. Sin embargo, el TAN solo representa el número de grupos carboxílicos presentes en el crudo y no considera las características estructurales de los ácidos nafténicos ni su reactividad en las reacciones de corrosión. En este trabajo se desarrolló el fraccionamiento de una mezcla comercial de ácidos nafténicos a partir de la solubilidad de sus respectivas sales. Se determinaron parámetros estructurales característicos de los ácidos nafténicos de cada fracción usando Espectroscopia de Infrarrojo, Cromatografía De Permeación en Gel, Resonancia Magnética Nuclear, Espectroscopia de Masas y Análisis Elemental. Se realizó el estudio cinético de la reacción de corrosión de un acero AISI 1005 expuesto a cada fracción de ácidos nafténicos en el rango de temperatura entre 270 y 350°C. Finalmente, se propuso un modelo de reacciones paralelas para la predicción de la concentración de hierro disuelto debido a la reacción de corrosión, a partir de la concentración molar de cada una de las fracciones que conforman la mezcla de ácidos nafténicos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Naphthenic acids]]></kwd>
<kwd lng="en"><![CDATA[corrosion]]></kwd>
<kwd lng="en"><![CDATA[crude oils]]></kwd>
<kwd lng="en"><![CDATA[AISI SAE 1005]]></kwd>
<kwd lng="es"><![CDATA[Ácidos Nafténicos]]></kwd>
<kwd lng="es"><![CDATA[corrosión]]></kwd>
<kwd lng="es"><![CDATA[refinación]]></kwd>
<kwd lng="es"><![CDATA[AISI SAE 1005]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>[1]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dettman]]></surname>
<given-names><![CDATA[H.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Luo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Refinery corrosion organic acid structure, and Athabasca bitumen. Corrosion 2009, Nace International (ID 09336)]]></source>
<year>2009</year>
<publisher-loc><![CDATA[Atlanta, USA ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B2">
<label>[2]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dettman]]></surname>
<given-names><![CDATA[Heather]]></given-names>
</name>
<name>
<surname><![CDATA[LUO]]></surname>
<given-names><![CDATA[Jingli]]></given-names>
</name>
</person-group>
<source><![CDATA[The influence of naphthenic acid and sulphur compound structure on global crude corrosivity under vacuum distillation. CORROSION]]></source>
<year>2010</year>
</nlm-citation>
</ref>
<ref id="B3">
<label>[3]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yepez]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[On the chemical reaction between carboxylic acids and iron including the special case for naphthenic acid]]></article-title>
<source><![CDATA[FUEL]]></source>
<year>2007</year>
<volume>86</volume>
<numero>7-8</numero>
<issue>7-8</issue>
<page-range>1162-8</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>[4]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alvisi]]></surname>
<given-names><![CDATA[P.P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[An overview of naphhthenic acid corrosion in a vacuum distillation plant]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Lins]]></surname>
<given-names><![CDATA[Vanesa F.C]]></given-names>
</name>
</person-group>
<source><![CDATA[Engineering Failure Analysis]]></source>
<year>2011</year>
<volume>18</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1403-6</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>[5]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Qu]]></surname>
<given-names><![CDATA[D.R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[High temperature naphthenic acid corrosion and sulphidic corrosion of Q235 and 5Cr1/2Mo steels in synthetic refining media]]></article-title>
<source><![CDATA[Corrosion Science]]></source>
<year>2006</year>
<volume>48</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>1960-85</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>[6]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Biryukova]]></surname>
<given-names><![CDATA[OV]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biodegradation of naphthenic acids by rhizosphere microorganisms]]></article-title>
<source><![CDATA[Chemosphere]]></source>
<year>2007</year>
<volume>67</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>2058-64</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>[7]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Saadine]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<source><![CDATA[Review of critical factors affecting crude corrosivity. CORROSION]]></source>
<year>1996</year>
<numero>607</numero>
<issue>607</issue>
</nlm-citation>
</ref>
<ref id="B8">
<label>[8]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mejia]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A kinetic study of esterification of naphthenic acids from a Colombian heavy crude oil]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Quiroga]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Laverde]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Hernandez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Gomez]]></surname>
<given-names><![CDATA[M.A]]></given-names>
</name>
</person-group>
<source><![CDATA[CT&amp;F-Ciencia Tecnología y Futuro]]></source>
<year>2012</year>
<volume>4</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>21-31</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>[9]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kapusta]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<source><![CDATA[Safe processing of acid crudes. CORROSION, 04637]]></source>
<year>2004</year>
</nlm-citation>
</ref>
<ref id="B10">
<label>[10]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dettman]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Luo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Refinery Corrosion, organic acid structure and Athabasca bitumen. CORROSION]]></source>
<year>2009</year>
<page-range>09336</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>[11]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Messer]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Beaton]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Tarlton]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Phillips]]></surname>
</name>
</person-group>
<source><![CDATA[New theory for naphthenic acid corrosivity of Athabasca Oil sands crudes. CORROSION, 04634]]></source>
<year>2004</year>
</nlm-citation>
</ref>
<ref id="B12">
<label>[12]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Freitas]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Analysis of the heavy oil distillation cuts corrosion by electrospray ionization FT-ICR mass spectrometry, electrochemical impedance spectroscopy, and scanning electron microscopy]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Malacarne]]></surname>
<given-names><![CDATA[M.M]]></given-names>
</name>
<name>
<surname><![CDATA[Romao]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Dalmaschio]]></surname>
<given-names><![CDATA[G.P]]></given-names>
</name>
<name>
<surname><![CDATA[Castro]]></surname>
<given-names><![CDATA[E.V.R]]></given-names>
</name>
<name>
<surname><![CDATA[Celante]]></surname>
<given-names><![CDATA[V.G]]></given-names>
</name>
<name>
<surname><![CDATA[Freitas]]></surname>
<given-names><![CDATA[M.B.J.G]]></given-names>
</name>
</person-group>
<source><![CDATA[FUEL]]></source>
<year>2013</year>
<numero>104</numero>
<issue>104</issue>
<page-range>656-63</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>[13]</label><nlm-citation citation-type="">
<collab>ASTM International</collab>
<source><![CDATA[ASTM G31-12a. Standard Guide for Laboratory Immersion Corrosion Testing of Metals, ASTM International, West Conshohocken, PA]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B14">
<label>[14]</label><nlm-citation citation-type="">
<collab>ASTM International</collab>
<source><![CDATA[ASTM D664-07, Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration, ASTM International, West Conshohocken, PA]]></source>
<year>2007</year>
</nlm-citation>
</ref>
<ref id="B15">
<label>[15]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jego]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Calibration and performance evaluation of the STICS crop model for simulating timothy growth and nutritive value]]></article-title>
<source><![CDATA[Field Crops Res]]></source>
<year>2013</year>
<numero>151</numero>
<issue>151</issue>
<page-range>65-77</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>[16]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jamieson]]></surname>
<given-names><![CDATA[P.D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A test of the computer simulation model ARCHWHEAI on wheat crops grown in New Zeland]]></article-title>
<source><![CDATA[Field Crops Res]]></source>
<year>1991</year>
<numero>27</numero>
<issue>27</issue>
<page-range>337-50</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>[17]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Muhammad]]></surname>
<given-names><![CDATA[Khan]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A-non Catalytic supercritical methanol route for effective desacidification of naphthenic acids]]></article-title>
<source><![CDATA[Fuel]]></source>
<year>2016</year>
<numero>182</numero>
<issue>182</issue>
<page-range>650-9</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>[18]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rongbao]]></surname>
<given-names><![CDATA[Li]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Structural analysis of polycyclic aromatic hydrocarbons derived from petroleum and coal by 13C and 1H-n.m.r spectroscopy]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[ZENGMIN]]></surname>
<given-names><![CDATA[Shen]]></given-names>
</name>
<name>
<surname><![CDATA[BAILING]]></surname>
<given-names><![CDATA[Li]]></given-names>
</name>
</person-group>
<source><![CDATA[Fuel]]></source>
<year>1988</year>
<volume>67</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>565-9</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>[19]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Williams]]></surname>
<given-names><![CDATA[R.B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characterization of hydrocarbons in petroleum by nuclear magnetic resonance spectrometry]]></article-title>
<source><![CDATA[Am. Test. Mater. Spec. Tech]]></source>
<year>1958</year>
<numero>224</numero>
<issue>224</issue>
<page-range>168-94</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>[20]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Quian]]></surname>
<given-names><![CDATA[S.A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Structural characterization of pitch feedstocks for coke making: use of 13C coupled 1H n.m.r. spectroscopy]]></article-title>
<source><![CDATA[Fuel]]></source>
<year>1985</year>
<volume>64</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>1085-91</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>[21]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Poveda]]></surname>
<given-names><![CDATA[Juan C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Average molecular parameters of heavy crude oils and their fractions using NMR spectroscopy]]></article-title>
<source><![CDATA[Journal of Petroleum Science and Engineering]]></source>
<year>2012</year>
<numero>84-85</numero>
<issue>84-85</issue>
<page-range>1-7</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>[22]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Xiaoqi]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characterization of Precipitated Asphaltenes and Deasphalted Oils of the Medium Crude Oil-CO2 and Medium Crude Oil-n-Pentane Systems]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[YONGAN]]></surname>
<given-names><![CDATA[Gu]]></given-names>
</name>
</person-group>
<source><![CDATA[Energy &amp; Fuels]]></source>
<year>2011</year>
<volume>25</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>5232-41</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>[23]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jin]]></surname>
<given-names><![CDATA[Peng]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Kinetic Reaction Modelling of Naphthenic Acid Corrosion and Sulfidation in Refineries - A Mechanistic Model]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Robbins]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Bota]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<source><![CDATA[CORROSION]]></source>
<year>2018</year>
<volume>74</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1351-62</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
