Hidrógeno como combustible, protección superficial, tratamientos ecológicos y aplicaciones energéticas de los materiales siderúrgicos (H2ELIOS)

ACERINOX EUROPA S.A.U en cooperación con SARRALLE ENGINEERING S.L., TECNALIA Research and Innovation y el grupo SURFCAT (Centro mixto CSIC-Universidad de Sevilla) abordarán el Proyecto H2ELIOS, con el objetivo de desarrollar experimentalmente nuevas soluciones tecnológicas a nivel instrumental y procedimental que, además de hacer factible en términos de operatividad, seguridad y sostenibilidad, la utilización del…

Controlled hydrothermal carbonization of wood-derived lignin-rich lignocellulose: Redefining pyrolytic pathways to tailored biochar and hydrogen-enriched syngas

This research illustrates the efficacy of hydrothermal carbonization (HTC) as a pretreatment method to improve the pyrolytic performance of wood-derived lignin-rich lignocellulosic biomass (LB), supported by thorough characterization of its derived products such as syngas, tar, and biochar. A systematic comparison of non-HTC-treated LB and HTC-treated LB through their respective pyrolytic-derived biochar (NLB, HLB) obtained…

Catalyzed hydrothermal carbonization of sewage sludge: structural modification of hydrochar and its derived selective pyrolytic product distribution

  The pressing demand for sustainable alternatives to fossil fuels coupled with environmental risks associated with inappropriate sewage sludge (SS) disposal calls for innovative valorization strategies that transform waste into value-added products. This study introduces a novel approach by directly incorporating zeolite catalysts (HZSM-5 and USY) into the hydrothermal carbonization (HTC) of SS, followed by…

Catalytic performance of NiCo-CePr oxide on FeCrAlloy micromonoliths in hydrogen production by oxidative steam reforming of ethanol

The conformation of a NiCo catalyst promoted by CePr on FeCrAlloy thermally pretreated micromonoliths was investigated via washcoating using a colloidal suspension of the catalytic precursor (hydrotalcite, HT) without the use of additives. A high affinity was established between the nature of the reconstructed HT and the layer of the formed alumina microstructures obtained after…

Materiales bifuncionales para captura de CO2 y transformación de hidrocarburos ligeros a olefinas en un proceso tandem (ALKATOL)

ALKATOL persigue una estrategia genuina para la valorización simultánea del CO₂ antropogénico y de los alcanos ligeros infrautilizados (C2–C5) presentes en el gas de esquisto y otras materias primas, transformándolos en productos químicos plataforma de alto valor (olefinas ligeras) como una alternativa verde altamente prometedora. El concepto ALKATOL abre nuevas oportunidades para impulsar la eficiencia…

Formic acid dehydrogenation and use as H-donor in 5-hydroxymethylfur-fural hydrodeoxygenation over Pd/C3N4 catalysts

This work studies the behavior of a series of Pd/C3N4 catalyst in the reaction of formic acid dehydrogenation and the use of the latter as H-donor for 2,5-hydroxymethyl furfural hydrodeoxygenation. Firstly, a series of supports have been synthesized from melamine and urea as a function of precursors ratio and temperature of their condensation. The different…

Integrated carbon capture and dry reforming of methane of mechanochemically synthesised dual-function materials

Herein we report a green mechanochemical synthesis with low energy input of dual-function materials for integrated CO2 capture and dry reforming of methane. The materials produced syngas during the CH4 step (up to 0.6 mmol g−1 CO and 7.7 mmol g−1 H2) and CO during the CO2 step (up to 3.1 mmol g−1) via the reverse Boudouard reaction due to the carbon…

Boosting Hydrogen Release: Optimized C3N4-Supported Palladium Catalysts for Formic Acid Dehydrogenation

Carbon nitride, C3N4, was synthesized through thermal polycondensation of melamine with varying temperature and time conditions. This approach represents a cost-effective, straightforward, and environmentally friendly synthetic method with lower energy consumption to obtain hierarchically structured carbon nitride. The resulting materials were subjected to comprehensive characterization to analyze their crystalline structure, textural properties, composition, and light…

Computational and experimental insights into single-atom catalysts supported on g-C3N4: Unraveling the superior stability and catalytic activity of Rh in hydroformylation reactions

Single-atom catalysts (SACs) have emerged as a promising class of materials, leveraging the benefits of both homogeneous and heterogeneous catalysis to enhance efficiency and selectivity. In this work we have investigated the catalytic performance of SACs supported on graphitic carbon nitride (g-C3N4) for hydroformylation reactions. A systematic evaluation of nine transition metal SACs (Fe, Ru,…