<?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>1665-3521</journal-id>
<journal-title><![CDATA[Superficies y vacío]]></journal-title>
<abbrev-journal-title><![CDATA[Superf. vacío]]></abbrev-journal-title>
<issn>1665-3521</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-35212016000100001</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Selective catalytic reduction of NOx with NH3 using ZSM5 with low content of copper]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandoval Rangel]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
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</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lucio-Ortiz]]></surname>
<given-names><![CDATA[C.J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
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<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera de la Rosa]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
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<contrib contrib-type="author">
<name>
<surname><![CDATA[Castaldi]]></surname>
<given-names><![CDATA[M.J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[San Nicolás de los Garza Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología ]]></institution>
<addr-line><![CDATA[Apodaca Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,City University of New York The City College of New York ]]></institution>
<addr-line><![CDATA[New York City NY]]></addr-line>
<country>U.S.A.</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>1</fpage>
<lpage>8</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-35212016000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-35212016000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-35212016000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract A comprehensive experimental and characterization study of selective catalytic reduction of NOx with NH3 was carried out on Cu-ZSM5 catalysts, previously prepared by the aqueous ion exchange method with a copper loading of 0.2, 1 and 2 %. Results showed that even with Cu contents as low as 2 % over zeolite, NOx conversions higher than 92 % are obtained at 600 °C. The copper catalysts were characterized using FT-IR, XRD, UV-Visible and with studies such as SEM, STEM and HRTEM, where the presence of CuO cores were shown to enhance the de-NOx activity, due to their higher thermal stability compared with the other copper species found. The predominance of dispersed 4-5 nm particles over the zeolite was identified, which accounts for the high NOx conversion results shown in SCR process.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Selective catalytic reduction]]></kwd>
<kwd lng="en"><![CDATA[ZSM-5]]></kwd>
<kwd lng="en"><![CDATA[NOx]]></kwd>
<kwd lng="en"><![CDATA[Ammonia]]></kwd>
</kwd-group>
</article-meta>
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