Results 21 to 30 of about 140 (98)

Asphaltene aggregation via dissipative particle dynamics

open access: yes, 2021
Asphaltenes compose the heaviest fraction of crude oil that can form nanoaggregates. These fractions can precipitate, clog pipes during extraction and processing, which can make the production process unfeasible.
Oliveira, Fellipe Carvalho de
core  

Espectroscopia de impedancia en soluciones de asfalteno-tolueno y malteno-tolueno de crudos de la Faja Petrolífera del Orinoco

open access: yes, 2020
Resumen La espectroscopía de impedancia es una técnica que junto a la espectroscopía dieléctrica, facilita una caracterización rápida y no destructiva de fluidos.
Navia Golán, José Antonio
core  

SEPARACIÓN Y CARACTERIZACIÓN DE RESINAS Y ASFALTENOS PROVENIENTES DEL CRUDO CASTILLA. EVALUACIÓN DE SU INTERACCIÓN MOLECULAR</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>CT&F Ciencia, Tecnología & Futuro</i>, 2004 </span><br><span class="r_content">El estudio de las resinas y los asfaltenos, las fracciones más pesadas del petróleo, se ha convertido en un área de interés, debido a la abundancia de crudos pesados en Colombia y en América Latina.</span><br><span class="r_sub"><i>Lina Navarro<span id="ma_3" style="display:none">, Mario Álvarez, Jorge-Luis Grosso, Uriel Navarro</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_3')">+3 more</a></small></i></span><br><small><a href="https://doaj.org/article/80c5e2b8fb914c79ae2185f257c247d2" target="_blank" rel="nofollow" title="doaj.org/article/80c5e2b8fb914c79ae2185f257c247d2">doaj</a> </small>   <br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.15446/rev.fac.cienc.v9n1.82015" target="_blank" rel="nofollow">EFECTO DE LA INSERCIÓN DEL BENZOATO DE COBALTO EN LOS ASFALTENOS</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Revista de la Facultad de Ciencias</i>, 2020 </span><br><span class="r_content">Los asfaltenos del crudo Ayacucho fueron modificados con la inserción de benzoato de cobalto. Los resultados de FTIR, se denotaron cambios estructurales en los asfaltenos, producto de la modificación con la inserción del benzoato de cobalto. En el análisis elemental, se observan variaciones de la relación H/C y el aumento del porcentaje de oxígeno ...</span><br><span class="r_sub"><i>Daniel Alejandro Pacheco Mora<span id="ma_4" style="display:none">, Henry Labrador</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_4')">+1 more</a></small></i></span><br><small><a href="https://explore.openaire.eu/search/publication?pid=10.15446%2Frev.fac.cienc.v9n1.82015" target="_blank" rel="nofollow" title="openaire.eu/search/publication?pid=10.15446%2Frev.fac.cienc.v9n1.82015">openaire</a> </small>   <div id="more_4" style="display:none"><a href="/sci_redir.php?doi=10.15446%2Frev.fac.cienc.v9n1.82015" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="https://revistas.unal.edu.co/index.php/rfc/article/download/82015/73875" target="_blank" rel="nofollow" title="revistas.unal.edu.co/index.php/rfc/article/download/82015/73875">revistas.unal.edu.co</a><br> <a href="javascript:navigator.clipboard.writeText('10.15446/rev.fac.cienc.v9n1.82015'); alert('Copied the doi');">copy doi</a> <small>(10.15446/rev.fac.cienc.v9n1.82015)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_4')">+2 more sources</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.25100/iyc.v17i2.2184" target="_blank" rel="nofollow">Electrodeposición de vanadio y níquel de los asfaltenos de crudos pesados</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>INGENIERÍA Y COMPETITIVIDAD</i>, 2015 </span><br><span class="r_content">La presencia de metales en los asfaltenos, especialmente del vanadio y níquel, puede ser una fuente de productos de valor agregado, pero representan una desventaja en las refinerías ya que no solo contaminan los productos sino que envenenan los catalizadores durante el proceso de craqueo catalítico.</span><br><span class="r_sub"><i>Natalia Afanasjeva<span id="ma_5" style="display:none">, William H. Lizcano-Valbuena, Nayeli Aristizabal, Ivone Mañozca</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_5')">+3 more</a></small></i></span><br><small><a href="https://explore.openaire.eu/search/publication?pid=10.25100%2Fiyc.v17i2.2184" target="_blank" rel="nofollow" title="openaire.eu/search/publication?pid=10.25100%2Fiyc.v17i2.2184">openaire</a> </small>   <div id="more_5" style="display:none"><a href="/sci_redir.php?doi=10.25100%2Fiyc.v17i2.2184" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="http://revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/download/2184/10277" target="_blank" rel="nofollow" title="revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/download/2184/10277">revistaingenieria.univalle.edu.co</a><br> <a href="http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0123-30332015000200002&lng=en&tlng=en" target="_blank" rel="nofollow" title="scielo.org.co/scielo.php?script=sci_arttext&pid=S0123-30332015000200002&lng=en&tlng=en">scielo.org.co</a><br> <a href="javascript:navigator.clipboard.writeText('10.25100/iyc.v17i2.2184'); alert('Copied the doi');">copy doi</a> <small>(10.25100/iyc.v17i2.2184)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_5')">+3 more sources</a></small><br></div><div class="r"><p class="r_title"><a href="http://pantheon.ufrj.br/bitstream/11422/18556/1/ACDLPedreira.pdf" target="_blank" rel="nofollow">Avaliação de correlação entre o teor de asfaltenos e viscosidade em derivados de petróleo</a> <b><a href="http://pantheon.ufrj.br/bitstream/11422/18556/1/ACDLPedreira.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2011 </span><br><span class="r_content">O teor de asfalteno em uma fração de petróleo desempenha um papel importante na determinação da viscosidade do óleo. Os asfaltenos constituem a fração de compostos mais pesada e polar de óleos crus.</span><br><span class="r_sub"><i>Pedreira, Alana da Costa Di Lauro<span id="ma_6" style="display:none">, Delgado, Alice Uzeda</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_6')">+1 more</a></small></i></span><br><small><a href="https://core.ac.uk/works/134985391" target="_blank" rel="nofollow" title="core.ac.uk/works/134985391">core</a> </small>   <br></div><div class="r"><p class="r_title"><a href="" target="_blank" rel="nofollow">Síntesis y evaluación del N,N,N’-trimetil– N´-octadecil– 1,2-diaminoetano (TODE) como dispersante de la fracción de asfalteno</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2014 </span><br><span class="r_content">Se realizó la síntesis del compuesto N,N,N’-trimetil-N’-octadecil-1,2-diaminoetano (TODE), con el fin de evaluar su efecto dispersante sobre los asfaltenos Ayacucho.</span><br><span class="r_sub"><i>Rizzo, Aniello</i></span><br><small><a href="https://core.ac.uk/works/63866213" target="_blank" rel="nofollow" title="core.ac.uk/works/63866213">core</a> </small>   <br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.11606/t.46.2018.tde-12042018-103610" target="_blank" rel="nofollow">Asphaltene: a challenge for the oil industry and the search for solutions by nanoscience</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2018 </span><br><span class="r_content">Asfaltenos são constituídos de hidrocarbonetos policíclicos aromáticos que fazem parte de uma das classes de compostos químicos mais poluentes e carcinogênicos.</span><br><span class="r_sub"><i>Pereira, Maria Luiza de Oliveira</i></span><br><small><a href="https://core.ac.uk/works/51391859" target="_blank" rel="nofollow" title="core.ac.uk/works/51391859">core</a> </small>   <div id="more_8" style="display:none"><a href="/sci_redir.php?doi=10.11606%2Ft.46.2018.tde-12042018-103610" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.11606/t.46.2018.tde-12042018-103610'); alert('Copied the doi');">copy doi</a> <small>(10.11606/t.46.2018.tde-12042018-103610)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_8')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="http://pantheon.ufrj.br/bitstream/11422/18927/1/LSNSBarbosa.pdf" target="_blank" rel="nofollow">Extração, caracterização e estudos de inibição de asfaltenos oriundos de diferentes depósitos</a> <b><a href="http://pantheon.ufrj.br/bitstream/11422/18927/1/LSNSBarbosa.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2011 </span><br><span class="r_content">Agência Nacional de Petróleo - Programa de Recursos HumanosOs asfaltenos representam um dos maiores problemas técnicos e desafios da indústria de petróleo, já que são responsáveis por causar grandes perdas em todas as etapas de produção do óleo.</span><br><span class="r_sub"><i>Barbosa, Larissa Souza Noel Simas</i></span><br><small><a href="https://core.ac.uk/works/134985215" target="_blank" rel="nofollow" title="core.ac.uk/works/134985215">core</a> </small>   <br></div><div class="r"><p class="r_title"><a href="" target="_blank" rel="nofollow">title.alternative</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2022 </span><br><span class="r_content">Since petroleum began to be used on a commercial scale, it has been an essential material for civilization. Its greatest use as an energy source, in addition to being used as feedstock in the manufacture of other inputs, requiring refining processes. The </span><br><span class="r_sub"><i>Bósio, Sarah Brandão</i></span><br><small><a href="https://core.ac.uk/works/158011466" target="_blank" rel="nofollow" title="core.ac.uk/works/158011466">core</a> </small>   <br></div><div class="r"><div style="margin-bottom:2px;overflow:hidden"><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-asfaltenos/" class="suggestion"onclick="show_loader();"><b>asfaltenos</b></a><br/><a href="/q-qu%C3%ADmica/" class="suggestion"onclick="show_loader();"><b>química</b></a><br/><a href="/q-petr%C3%B3leo/" class="suggestion"onclick="show_loader();"><b>petróleo</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-asphaltenes/" class="suggestion"onclick="show_loader();"><b>asphaltenes</b></a><br/><a href="/q-crudos_pesados/" class="suggestion"onclick="show_loader();"><b>crudos pesados</b></a><br/><a href="/q-vpo/" class="suggestion"onclick="show_loader();"><b>vpo</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-gpc/" class="suggestion"onclick="show_loader();"><b>gpc</b></a><br/><a href="/q-drx/" class="suggestion"onclick="show_loader();"><b>drx</b></a><br/><a href="/q-ft-ir/" class="suggestion"onclick="show_loader();"><b>ft-ir</b></a><br/></div></div></div><div class="pagenav"><a href="/q-asfalteno/p-2/" rel="nofollow"><b>previous</b></a>   <a href="/q-asfalteno/" rel="nofollow">1</a>  <a href="/q-asfalteno/p-2/" rel="nofollow">2</a>  <b>3</b>  <a href="/q-asfalteno/p-4/" rel="nofollow">4</a>  <a href="/q-asfalteno/p-5/" rel="nofollow">5</a>   <a href="/q-asfalteno/p-4/" id="next" rel="nofollow"><b>next</b></a> </div><br></div> </div> <script>document.getElementById('loadingGif').style.display='none';</script><div style="width: 100%; height: 40px; bottom: 0px; background-color: #f5f5f5;"><div style="padding-left: 15px; padding-top: 10px"> <a href="/" rel="nofollow">Home</a> - <a href="/page-about/" rel="nofollow">About</a> - <a href="/page-disclaimer/" rel="nofollow">Disclaimer</a> - <a href="/page-privacy/" rel="nofollow">Privacy</a> </div></div> <link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.min.css"/> <script> (function(ss,ex){ window.ldfdr=window.ldfdr||function(){(ldfdr._q=ldfdr._q||[]).push([].slice.call(arguments));}; (function(d,s){ fs=d.getElementsByTagName(s)[0]; function ce(src){ var cs=d.createElement(s); cs.src=src; cs.async=1; fs.parentNode.insertBefore(cs,fs); }; ce('https://sc.lfeeder.com/lftracker_v1_'+ss+(ex?'_'+ex:'')+'.js'); })(document,'script'); })('JMvZ8gvrWA9a2pOd'); </script> </body> </html>