<?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>2448-5691</journal-id>
<journal-title><![CDATA[Mundo nano. Revista interdisciplinaria en nanociencias y nanotecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Mundo nano]]></abbrev-journal-title>
<issn>2448-5691</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-56912021000100006</article-id>
<article-id pub-id-type="doi">10.22201/ceiich.24485691e.2021.26.69638</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Obtención y análisis de expresiones de cinética química. I. Obtención de datos cinéticos y criterios para evitar los problemas de transferencia de masa y energía utilizando catalizadores heterogéneos]]></article-title>
<article-title xml:lang="en"><![CDATA[Obtention and analysis of chemical kinetic expressions. I. Obtaining kinetic data and criteria to avoid mass and energy transfer problems with heterogeneous catalysts]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villarreal]]></surname>
<given-names><![CDATA[Aline]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuevas-García]]></surname>
<given-names><![CDATA[Rogelio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Química Departamento de Ingeniería Química]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>14</volume>
<numero>26</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-56912021000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-56912021000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-56912021000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este artículo se discute la importancia de los análisis cinéticos. Se habla del tipo de función matemática que conforma una expresión de rapidez de reacción (-RA), en especial en presencia del catalizador; se describe la funcionalidad de (-RA) con la temperatura y concentración. Se describen también varias expresiones de rapidez, como las de la ley de potencia, las expresiones teóricas y las ecuaciones de LHHW. También se habla de los reactores típicos que se usan en el laboratorio y se describen los criterios que pueden utilizarse para desestimar los problemas de transferencia de masa y energía que se presentan comúnmente en las evaluaciones catalíticas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This article discusses the importance of kinetic analyses. The mathematical function of the chemical reaction rate expression (-RA) is introduced, including the expression used in the presence of a catalyst and the functionality of (-RA) with temperature and concentration. Several rate expressions such as power law expressions, theoretical expressions, and LHHW equations are described. It also revises typical reactors used in the laboratory and describes the criteria that can be used to disdain the mass and energy transfer problems commonly presented in catalytic assessments.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[rapidez de reacción]]></kwd>
<kwd lng="es"><![CDATA[actividad catalítica]]></kwd>
<kwd lng="es"><![CDATA[expresiones de ley de potencia]]></kwd>
<kwd lng="es"><![CDATA[ecuaciones LHHW]]></kwd>
<kwd lng="es"><![CDATA[tipos de reactores de laboratorio]]></kwd>
<kwd lng="es"><![CDATA[fenómenos de transferencia de masa y energía]]></kwd>
<kwd lng="en"><![CDATA[chemical reaction rate]]></kwd>
<kwd lng="en"><![CDATA[catalytic activity]]></kwd>
<kwd lng="en"><![CDATA[power law expressions]]></kwd>
<kwd lng="en"><![CDATA[LHHW equations]]></kwd>
<kwd lng="en"><![CDATA[types of laboratory reactors]]></kwd>
<kwd lng="en"><![CDATA[mass and energy transfer phenomena]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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