Browsing by Author "Guerrero, Sichem"
Now showing items 1-13 of 13
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Sánchez, Luis; Águila, Gonzalo; Araya Figueroa, Paulo Enrique; Quijada Urzúa, Sergio; Guerrero, Sichem (Royal Soc Chemistry, England, 2021)The transient combustion of biomass leads to the evolution of a variety of pollutants (NO, CO, organic compounds, and many others) that can react with each other on a suitable catalyst to generate compounds of lower ...
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Guerrero, Sichem; Mercado, A.; Osses Alvarado, Axel (2007)
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Zenteno, Andrés; Guerrero, Sichem; Ulloa Flores, María Teresa; Palza Cordero, Humberto; Zapata, Paula A. (Wiley & Sons, 2015)TiO2 nanotubes (TiO2-Ntbs) synthesized by a hydrothermal method were used as filler to prepare polypropylene (PP) composites by melt blending. Their structural properties as well as their biocidal potential were studied. ...
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Águila, Gonzalo; Guerrero, Sichem; Araya Figueroa, Paulo (2013)The effect of preparation method, either coimpregnation or sequential impregnation, and of calcination temperature (between 500 degrees C and 700 degrees C) of CuO-CeO2/SiO2 catalysts on the CuO-CeO2 interface and on their ...
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Quincoces, C. E.; Guerrero, Sichem; Araya Figueroa, Paulo; González, M. G. (ELSEVIER SCIENCE BV, 2005-06)he selective catalytic reduction (SCR) of NO by CH4 in the presence of excess 02 has been studied on Pd-Co, Pd and Co catalysts supported on sulfated zirconia (SZ) and activated in reaction mixture at 700 degreesC. After ...
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Bormann, Carla; Rodriguez, Nicole; Araya, Paulo; Guerrero, Sichem (ELSEVIER SCIENCE BV, 2016)A novel Pt-free Rb/Cu/YCeO2 catalyst was applied to the adsorption of NO under oxidizing conditions. The results show a much greater performance of this catalyst relative to a Pt/Ba/Al2O3 catalyst. The results suggest that ...
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Bormann, Carla; Rodriguez, Nicole; Araya, Paulo; Guerrero, Sichem (ELSEVIER SCIENCE BV, 2016)A novel Pt-free Rb/Cu/YCeO2 catalyst was applied to the adsorption of NO under oxidizing conditions. The results show a much greater performance of this catalyst relative to a Pt/Ba/Al2O3 catalyst. The results suggest that ...
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Aguila, Gonzalo; Guerrero, Sichem; Gracia, F. J.; Araya, P. (ELSEVIER, 2006-05-24)The structural stability of a commercial hydrous zirconia and a hydrous zirconia synthesized in our laboratory by the sol-gel method has been improved by a post-synthesis reflux treatment with aqueous NH4OH and NaOH solutions ...
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Improvement of thermal stability of highly active species on SiO2 supported copper-ceria catalysts Águila, Gonzalo; Calle Chumo, Rafael Norberto; Guerrero, Sichem; Baeza, Patricio; Araya Figueroa, Paulo Enrique (Royal Soc Chemistry, Englandroyal so, 2021)CuO–CeO2/SiO2 catalysts lose activity when they are calcined at 600 C and temperatures above. This loss of activity was related to a decrease in the amount of highly dispersed Cu species interacting with Ce (CuO– CeO2 ...
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Araya Figueroa, Paulo; Guerrero, Sichem; Robertson, J.; Gracia, F. J. (ELSEVIER SCIENCE BV, 2005-04-08)The combustion of methane has been studied over 1% Pd catalysts supported on commercial silica with different hydrophobicity, prepared by chlorine free precursors. It was found that, when no water is added to the feed, the ...
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Guerrero, Sichem; Araya Figueroa, Paulo; Wolf, Eduardo E. (ELSEVIER, 2006-01-10)The results presented in this work clearly show that zirconia synthesized by precipitation of zirconyl chloride with NaOH leads to a zirconia with high surface area (224 m(2)/g), which is relatively stable after high ...
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Yáñez, Daniela; Guerrero, Sichem; Lieberwirth, Ingo; Ulloa Flores, María Teresa; Gómez, Tatiana; Rabagliati, Franco M.; Zapata, Paula A. (Elsevier, 2015)Polyethylene (PE) and polyethylene-octadecene (LLDPE) composites containing titanium dioxide nano-tubes were synthesized and applied to the inhibition of selected bacteria. It was found that polymerizationrate of the ...
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Salinas, Daniela; Guerrero, Sichem; Araya Figueroa, Paulo (ELSEVIER, 2010)The transesterification reaction of canola oil was studied on titania-supported catalysts with varying loadings of potassium. It was found that the most active catalysts fall in the range where the adsorption/ desorption ...