<?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>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822016000100003</article-id>
<article-id pub-id-type="doi">10.18845/tm.v29i1.2534</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Deposición de Sn en Pt policristalino para su aplicación en la oxidación de metanol]]></article-title>
<article-title xml:lang="en"><![CDATA[Deposition of Sn in polycrystalline Pt for use in the oxidation of Methanol]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Yáñez]]></surname>
<given-names><![CDATA[Javier E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional  ]]></institution>
<addr-line><![CDATA[ Heredia]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2016</year>
</pub-date>
<volume>29</volume>
<numero>1</numero>
<fpage>3</fpage>
<lpage>17</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822016000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822016000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822016000100003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se evaluaron tres diferentes métodos de deposición de estaño en platino policristalino (Pt pc) desde una solución de ácido sulfúrico utilizando técnicas electroquímicas convencionales, con el fin de determinar y comparar su influencia en la oxidación de metanol. Los métodos probados fueron deposición espontánea, deposición a subpotenciales y deposición cíclica a subpotenciales. El estaño fue depositado desde una solución de SnSO4 en ácido sulfúrico. Se utilizó la reducción del perfil voltamétrico en el área de adsorción de hidrógeno en el platino por el estaño para calcular el grado de cubrimiento de la superficie por el mismo. La adsorción de metanol y su oxidación se compararon entre los electrodos de platino y platino/ estaño, considerando la eficiencia de oxidación de metanol con respecto al área libre de platino como parámetro comparativo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Three different tin deposition methods on a polycrystalline platinum electrode in sulfuric acid were studied by conventional electrochemical techniques, in order to determine and compare their influence on methanol oxidation. The deposition methods tested were spontaneous deposition, under potential deposition and cyclic under potential deposition. Tin was deposited from a solution of SnSO4 in sulfuric acid. The inhibition of the hydrogen adatom voltammetric profile on platinum by tin metal ion was used to calculate the degree of surface coverage due to tin deposition. Methanol adsorption and oxidation were compared on platinum and platinum/tin electrodes, considering the efficiency of methanol oxidation with respect to the platinum free area.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Estaño]]></kwd>
<kwd lng="es"><![CDATA[platino]]></kwd>
<kwd lng="es"><![CDATA[metanol]]></kwd>
<kwd lng="es"><![CDATA[subpotencial]]></kwd>
<kwd lng="es"><![CDATA[espontáneo]]></kwd>
<kwd lng="es"><![CDATA[electrocatálisis]]></kwd>
<kwd lng="es"><![CDATA[voltamperometría]]></kwd>
<kwd lng="en"><![CDATA[Tin]]></kwd>
<kwd lng="en"><![CDATA[platinum]]></kwd>
<kwd lng="en"><![CDATA[methanol]]></kwd>
<kwd lng="en"><![CDATA[upd]]></kwd>
<kwd lng="en"><![CDATA[spontaneous]]></kwd>
<kwd lng="en"><![CDATA[electrocatalysis]]></kwd>
<kwd lng="en"><![CDATA[voltammetry]]></kwd>
</kwd-group>
</article-meta>
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