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Mostrando ítems 551-560 de 589
Artículo
Thermochemical Energy Storage Using Calcium Magnesium Acetates under Low CO2 Pressure Conditions
(Elsevier, 2023)
The calcium looping multicycle performance of CaO-based materials, derived from calcium magnesium acetates with different Mg content were tested under experimental conditions compatible with thermochemical energy storage. ...
Artículo
Photocatalytic Treatment Based on TiO2 for a Coal Mining Drainage
(Universidad de Antioquía, 2023)
The aim of the present work was to evaluate the effectiveness of a heterogeneous photocatalyst based on T iO2 in the treatment of coal mining drainage which contains a variety of heavy metals and high concentration ...
Artículo
ZnO/TiO2 and ZnO/Nb2O5 as Effective Systems for the Treatment of Enteric Bacteria and Commercial Dyes
(Universidad de Antioquía, 2023)
In this study, ZnO/TiO2 and ZnO/Nb2O5 photocatalysts were evaluated in the river pollution remediation and wastewater treatment from textile factories, thus, the target pollutants selected for this study were enteropathogenic ...
Artículo
Methanation of CO2 over High Surface Nickel/Aluminates Compounds Prepared by a Self-Generated Carbon Template
(Multidisciplinary Digital Publishing Institute (MDPI), 2023)
Catalytic gas-phase hydrogenation of CO2 into CH4 was tested under three different nickel/aluminate catalysts obtained from precursors of hexaaluminate composition (MAl16O19, M = Mg, Ca, Ba). These catalysts were prepared ...
Artículo
MIL-100(Fe)-Derived Catalysts for CO2 Conversion Via Low- and High-Temperature Reverse Water-gas Shift Reaction
(Elsevier, 2023)
Fe-derived catalysts were synthesized by the pyrolysis of MIL-100 (Fe) metal-organic framework (MOF) and evaluated in the reverse water-gas shift (RWGS) reaction. The addition of Rh as a dopant by in-situ incorporation ...
Artículo
Ruthenium Nanoparticles Stabilized by 1,2,3-Triazolylidene Ligands in the Hydrogen Isotope Exchange of E-H Bonds (E = B, Si, Ge, Sn) Using Deuterium Gas
(Royal Society of Chemistry, 2023)
A series of ruthenium nanoparticles (Ru·MIC) stabilized with different mesoionic 1,2,3-triazolylidene (MIC) ligands were prepared by decomposition of the Ru(COD)(COT) (COD = 1,5-cyclooctadiene; COT = 1,3,5-cyclooctatriene) ...
Artículo
The role of carbon nanotubes on the stability of tetragonal zirconia polycrystals
(Elsevier, 2018-10)
The effect of single walled carbon nanotubes (SWNT) at zirconia grain boundaries on the stability of a tetragonal zirconia polycrystalline matrix has been explored in as–sintered composites and after low–temperature ...
Artículo
Evaluation of the integral methods for the kinetic study of thermally stimulated processes in polymer science
(Elsevier, 2005)
This paper reports on the accuracy of the integral methods used for the kinetic analysis of degradation and crystallization of polymers. Integral methods are preferred by many authors over the differential ones because ...
Artículo
The role of boron oxide and carbon amounts in the mechanosynthesis of ZrB2-SiC-ZrC nanocomposite via a self-sustaining reaction in the zircon/magnesium/boron oxide/graphite system
(Elsevier, 2014)
Herein, ZrSiO4/B2O3/Mg/C system was used to synthesize a ZrB2-based composite by means of a high energy ball milling process. A mechanically induced selfsustaining reaction was achieved in this system. A nanocomposite ...
Artículo
Optimizing the homogenization technique for graphene nanoplatelet/yttria tetragonal zirconia composites: Influence on the microstructure and the electrical conductivity
(Elsevier, 2018-10-30)
3 mol% yttria tetragonal zirconia polycrystalline (3YTZP) ceramic composite powders with 10 vol% nominal content of graphene nanoplatelets (GNPs) were prepared using four different homogenization routines: dispersion of ...