Listar por autor "Guerrero-Pérez, María Olga"
Mostrando ítems 1-20 de 24
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A new versatile x–y–z electrospinning equipment for nanofiber synthesis in both far and near field.
Calzado-Delgado, María del Mar; Guerrero-Pérez, María Olga
; Yeung, King (Nature, 2022-03-22)
This work describes a versatile electrospinning equipment with rapid, independent, and precise x–y–z movements for large-area depositions of electrospun fibers, direct writing or assembly of fibers into sub-millimeter and ... -
Activated carbons as catalytic support for Cu nanoparticles
Martin, F.J.; Yang, C.; García-Mateos, Francisco José; Guerrero-Pérez, María Olga; Rodríguez-Mirasol, José; Cordero-Alcántara, Tomás[et al.] (2018-05-30)
There are a wide range of catalytic applications for Cu-based nanoparticles materials, since Cu is an abundant and inexpensive metal and Cu nanoparticles possess unusual electrical, thermal and optical properties. The ... -
Advances in electrospun composite polymer/zeolite and geopolymer nanofibers: A comprehensive review.
Schneider, Mariana; Rodríguez-Castellón, Enrique; Guerrero-Pérez, María Olga; Hotza, Dachamir; De Noni Junior, Agenor; Peralta Muniz Moreira, Regina de Fátima[et al.] (Elsevier, 2024-02-05)
Electrospinning is widely recognized as an efficient, simple, and cost-effective technique for producing nanofibers. It has successfully led to the fabrication of various ultrafine polymer composites. This method has spurred ... -
Carbon materials as template for the preparation of mixed oxides with controlled morphology
Cabrera-Molina, Antonio; Valero-Romero, María José; Guerrero-Pérez, María Olga; Rodríguez-Mirasol, José; Cordero-Alcántara, Tomás (2013-06-18)
Bulk mixed oxide catalysts are widely used for many applications, such as catalysts for selective oxidation processes, electrocatalysts for fuel cells, gas sensors, and solid oxide electrolysers for the production of ... -
Carbon-supported VPO catalysts with fibrous structure: A new family of catalysts for partial oxidation reactions
Guerrero-Pérez, María Olga; Berenguer-Betrián, Raúl; Ford, Michael; Wachs, Israel E. (Elsevier, 2023-07-15)
The present contribution describes the synthesis of a carbon supported VPO catalyst with a fibrous structure. The synthesis method is simple, low-cost, scalable and reproducible that allows the formation of the bulk mixed ... -
Combined Operando XANES and NMR and ESR Spectroscopies for the Determination of VPO Dynamic States.
Guerrero-Pérez, María Olga; Lapina, Olga B.; Rasmussen, Soren B.; Bañares, Miguel Ángel (Springer, 2023-05-29)
Nanoscaled-VPO (vanadium phosphate oxide) catalysts have been prepared on an alumina support with the objective of obtaining crystallites of the active phase with a high surface-to-volume ratio. Since the catalysed reaction ... -
Dissolvable Topical Formulations for Burst and Constant Delivery of Vitamin C
Calzado-Delgado, María del Mar; Guerrero-Pérez, María Olga; Yeung, King (American Chemical Society, 2023-03-27)
Healthy skin has a high vitamin C concentration that protects against ultraviolet (UV)-induced damage, promotes wound healing, and lowers cancer risk. The present contribution describes two drug delivery systems for topical ... -
Effect of Nb as dopant of hydrotalcite catalysts during the ethanol condensation to optimize n-Butanol production
Valdivieso-Vera, Daniel Alejandro; Flores-Escamilla, Gerardo Antonio; Cano-Gómez, José Julián; Barroso-Martín, Isabel; Rodríguez-Castellón, Enrique; Santos-López, Iván Alonso; Guerrero-Pérez, María Olga[et al.] (Elsevier, 2024)
The present study optimizes Cu-supported catalysts on hydrotalcite for the synthesis of n-butanol whose interest is in its use as biofuel, due to its superior performance in comparison with other short-chain alcohols. ... -
Electrospun Functional Nanofibers for Antimicrobial Applications in Air Filtration and Wound Dressing
(UMA Editorial, 2023)The design of several materials with functional properties was suitably obtained, combining some of them, the electrospray and electrospinning technique, and giving better antibacterial and filtering properties. The synthesis ... -
Estudio cinético de la reacción de ODH de propano sobre catalizadores de vanadio electrohilado con tamaño submicrométrico
(UMA Editorial, 2020)El propileno es el segundo compuesto más utilizado en la industria química. El incremento de la demanda ha incentivado la aparición de tecnologías alternativas para producir propileno. La deshidrogenación oxidativa (ODH) ... -
Experimental methods in chemical engineering: X-rayabsorption spectroscopy—XAS, XANES, EXAFS
Iglesias-Juez, Ana; Chiarello, Gian Luca; Patience, Gregory; Guerrero-Pérez, María Olga (Wiley, 2021-08-21)
Although X-ray absorption spectroscopy (XAS) was conceived in the early 20th century, it took 60 years after the advent of synchrotrons for researchers to exploit its tremendous potential. Counterintuitively, researchers ... -
Groups IV, V and VI metal oxide-containing hydrotalcite catalysts: state of the art on their catalytic applications
Valdivieso-Vera, Daniel A.; Guerrero-Pérez, María Olga (Elsevier, 2024-07-08)
The present contribution is a review paper that summarizes the structure, properties and catalytic applications of hydrotalcite based materials when they are modified by the incorporation of oxide metals from groups 4, 5 ... -
Is the “Green Washing” Effect Stronger than Real Scientific Knowledge? Are We Able to Transmit Formal Knowledge in the Face of Marketing Campaigns?
Alonso-Calero, José María; Cano-García, Josefa; Guerrero-Pérez, María Olga (MDPI, 2021-12-28)
Hoy en día, la mayoría de los ciudadanos están sometidos a una gran (des)información organizada por campañas de marketing o por grupos con intereses políticos que abusan indiscriminadamente de conceptos como la sostenibilidad, ... -
Kinetic study of propane ODH on electrospun vanadium oxide-based submicron diameter fiber catalyst
Ternero-Hidalgo, Juan José; Ruiz-Rosas, Ramiro Rafael; Rosas-Martínez, Juana María; Guerrero-Pérez, María Olga; Rodríguez-Mirasol, José; Cordero-Alcántara, Tomás[et al.] (Elsevier, 2024)
A rigorous kinetic study of the oxidative dehydrogenation (ODH) reaction of propane on a vanadium oxide-based submicron diameter fiber catalyst has been developed. The proposed kinetic model simulates the conversion- selectivity ... -
Morphological changes of vanadyl pyrophosphate due to thermal excursions
Badehbakhsh, Sepideh; Saadatkhah, Nooshin; Mahboub, Mohammad; Guerrero-Pérez, María Olga; Patience, Gregory (Elsevier, 2023-01-01)
Vanadyl pyrophosphate (VPP) is the active catalytic phase that converts n-butane to maleic anhydride in fixed beds, fluidized beds, and DuPont’s circulating fluidized bed (CFB). The original CFB concept was based on the ... -
Operando Reactor-Cell with Simultaneous Transmission FTIR and Raman Characterization (IRRaman) for the Study of Gas-Phase Reactions with Solid Catalysts.
Ternero-Hidalgo, Juan José; Guerrero-Pérez, María Olga; Rodríguez-Mirasol, José; Cordero-Alcántara, Tomás; Bañares, Miguel Ángel; Portela, Raquel; Bazin, Philippe; Cleo, Guillaume; Daturi, Marco[et al.] (American Chemical Society, 2020-03-10)
Raman and transmission FTIR spectroscopic techniques have been coupled in a new homemade reactor-cell designed in a joint CSIC–LCS collaboration. The setup is easily adapted to any FTIR and fiber-coupled Raman spectrometers ... -
Perspectives and State of the Art of Membrane Separation Technology as a Key Element in the Development of Hydrogen Economy.
Guerrero-Pérez, María Olga (MDPI, 2024-10-30)
Due to the objectives established by the European Union and other countries, hydrogen production will be a key technology in the coming decades. There are several starting materials and procedures for its production. All ... -
Rapid scan FTIR reveals propane (am)oxidation mechanisms over vanadium based catalysts.
Guerrero-Pérez, María Olga; McCue, Alan; Anderson, James (Elsevier, 2020-08-06)
Rapid scan FTIR coupled with Mass Spectrometry (MS) has been used to determine the role of spectroscopically observed species in the reaction media during propane dehydrogenation over a V/Al catalyst, and propane ammoxidation ... -
Research progress on the applications of electrospun nano-fibers in catalysis.
Guerrero-Pérez, María Olga (MDPI, 2021-12-23)
During the last two decades, electrospinning has become a very popular technique for the fabrication of nanofibers due to its low cost and simple handling. Nanofiber materials have found utilization in many areas such as ... -
Sn-silica catalyzes cheese whey to lactic acid in a fluidized bed reactor
Rivera-Quintero, Paula Andrea; Guerrero-Pérez, María Olga; Rodríguez-Castellón, Enrique; Patience, Gregory (Elsevier, 2025-03-28)
Worldwide, the dairy industry produces 200 million tons per year of whey. Among the most abundant components of cheese whey is lactose, a low-priced raw material for nutraceuticals, animal feed, and high value products ...