Listar Ingeniería Química - (IQ) por tipo "info:eu-repo/semantics/article"
Mostrando ítems 1-20 de 89
-
2D/2D NiTi-LDH/BiOBr photocatalyst with extraordinary NOx removal under visible light
(Elsevier, 2023)Many current studies are focused on the development of 2D/2D nanosystems based on non-traditional semiconductors as efficient visible light-active photocatalysts, due to their interesting structural and optical properties. ... -
A comparison of batch and semi-batch reactors for leaching battery cathodes (LiCoO2) under controlled addition of HCl and H2O2
(Elsevier, 2024-08)Recovery of cobalt and lithium from end-of-life Li-ion battery wastes have been evaluated in batch and semi- batch leaching systems. In this preliminary study, HCl and H2O2 were used as leaching and reducing agents, re ... -
A Kinetic Model Considering Catalyst Deactivation for Methanol-to-Dimethyl Ether on a Biomass-Derived Zr/P-Carbon Catalyst
(IOAP-MDPI, 2022-01-13)A Zr-loaded P-containing biomass-derived activated carbon (ACPZr) has been tested for methanol dehydration between 450 and 550 °C. At earlier stages, methanol conversion was complete, and the reaction product was mainly ... -
A new versatile x–y–z electrospinning equipment for nanofiber synthesis in both far and near field.
(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 ... -
A solid-state integrated photo-supercapacitor based on ZnO nanorod arrays decorated with Ag2S quantum dots as photoanode and PEDOT charge storage counter-electrode.
(Royal Society of Chemistry, 2020)A planar solid-state photocapacitor with two electrodes has been prepared for the first time using a passivated film of ZnS with Ag2S quantum dots deposited on ZnO nanorods, which were electrochemically grown on ZnO seed ... -
Acid leaching of LiCoO2 enhanced by reducing agent. Model formulation and validation.
(Elsevier, 2021-08-25)In this work, a model has been formulated to describe the complex process of LiCoO2 leaching through the participation of competing reactions in acid media including the effect of H2O2 as reducing agent. The model presented ... -
Activated carbon monoliths from lignocellulosic biomass waste for electrochemical applications.
(Elsevier, 2019-03-05)The valorization of lignocellulosic biomass waste into bio-based materials is proposed in this work in order to obtain low-cost materials and to reduce environmental impacts. Cylindrical activated carbon monoliths (ACMs) ... -
Activation of electrospun lignin-based carbon fibers and their performance as self-standing supercapacitor electrodes
(Elsevier, 2020)The production and activation of self-standing carbon electrodes from electrospun lignin fibers was analyzed in this work. Carbon microfibers were prepared at 900 °C from air-stabilized spun cloths by direct carbonization ... -
Activation of electrospun lignin-based carbon fibers and their performance as self-standing supercapacitor electrodes
(2020-02-17)The production and activation of self-standing carbon electrodes from electrospun lignin fibers was analyzed in this work. Carbon microfibers were prepared at 900 °C from air-stabilized spun cloths by direct carbonization ... -
Advances in electrospun composite polymer/zeolite and geopolymer nanofibers: A comprehensive review.
(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 ... -
Assessment of Agricultural Residue to Produce Activated Carbon-Supported Nickel Catalysts and Hydrogen Rich Gas.
(MDPI, 2023-05-08)The aim of this study was to synthesize chemically activated carbons from different agricultural residues, i.e., pistachio shell (PS), bitter orange peel (OP), and saffron petal (SP), and subsequently to use them as supports ... -
Bi-reforming of Biogas for Hydrogen Production with Sulfur-Resistant Multimetallic Catalyst
(Wiley, 2023)A multimetallic sample, NiCeSnRh/Al2O3, was tested in methane reforming with a CH4:H2O:CO2 molar ratio equal to 3:2:1. A very stable methane conversion with the time-on-stream was achieved during 20 h. Dimethyl sulfide ... -
Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst
(ACS, 2024-04-04)The sustainable production of vanillin from the oxidative depolymerization of lignin was evaluated. Vanillin was produced from Kraft lignin using heterogeneous catalysts based on activated carbons prepared by chemical ... -
Biocrude oil production upgrading by catalytic assisted hydrothermal liquefaction of underutilized non-edible seed biomass
(Springer Nature, 2024-09-13)Thermal and catalytic aqueous hydrothermal liquefaction of Ricinus communis and Jatropha curcas L. seeds, after mechanical defatting, was conducted at 260 °C for 40 min under subcritical water conditions with a biomass-to-water ... -
Biomass-derived activated carbon catalysts for the direct dimethyl ether synthesis from syngas
(Elsevier, 2024-02-27)The direct DME synthesis from syngas was studied by using activated carbon-based bifunctional catalytic beds. Two kinds of activated carbons, prepared by physical (by CO2 partial gasification) and chemical (with phosphoric ... -
Biomass-derived binderless fibrous carbon electrodes for ultrafast energy storage.
(Royal Society of Chemistry, 2015-10-14)The possibility of storing energy efficiently and sustainably at little cost is crucial to prevent climate change and the exhaustion of natural resources. In this work we demonstrate that interconnected and porous carbon ... -
Carbon-based materials as Catalyst Supports for Fischer–Tropsch Synthesis: a review
(Frontiers, 2021-02-04)The use of carbon-based materials as catalyst supports for Fischer–Tropsch synthesis (FTS) is thoroughly reviewed. The main factors to consider when using a carbonaceous catalyst support for FTS are first discussed. Then, ... -
Carbon-supported VPO catalysts with fibrous structure: A new family of catalysts for partial oxidation reactions
(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 ... -
Carbon/H-ZSM-5 composites as supports for bi-functional Fischer-Tropsch synthesis catalysts
(Royal Society of Chemistry, 2016)Mesoporous H-ZSM-5–carbon composites, prepared via tetrapropylammonium hydroxide (TPAOH) post treatment of H-ZSM-5 followed by deposition of pyrolytic carbon, have been used as the support for the preparation of Co-based ... -
Catalytic upgrading of ethanol to n-butanol over a novel Ca-Fe modified mixed oxide Mg-Al catalyst from hydrotalcite-base precursor
(Elsevier, 2021-07-22)n-Butanol is used in a wide range of applications and recently, the use of n-butanol as a fuel, which can be employed pure or blended with gasoline or diesel, has been proposed. So, in an attempt to deepen in the one-step ...