Alkali-Boosted Catalytic Activity of Co-Based Catalysts Supported by Nanoporous Carbon in the Hydrodeoxygenation of Guaiacol
Year: 2024
Type: article
Abstract: The catalytic activity and selectivity of Co-based catalysts supported on home-made nanoporous carbon was studied as a function of the type of alkali promoter (Ca and Mg). The catalysts were characterized by N2 adsorption/desorption isotherms, temperature-programmed reduction, CO chemisorption, and X-ray diffraction patterns. The catalysts were compared against carbon-supported alkali-promoted Ni-based catalysts and Re-containing catalysts. The catalytic activity of the Co-based catalyst was clearly enhanced in the presence of Ca and Mg, and it was higher than the Ni-based catalysts and comparable to that obtained using an ReC catalyst. The initial activity of the Mg-promoted catalyst increased by a factor of up to 2.5 times higher compared to the non-promoted catalyst. Moreover, this catalyst showed a turnover frequency of up to 5 times higher than equivalent carbon-supported Re-based catalysts. Significant changes were not observed in the selectivity of products after the incorporation of alkali, with cyclohexane being the main product. However, it was demonstrated that the presence of alkali led to a faster and higher production of cyclohexane from the demethoxylation of phenol and the dehydrogenation of cyclohexanol. The present results suggest that Co-based catalysts are an economical alternative for the catalytic conversion of representative target molecules from bio-oil feed.
Source: Catalysts
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,069
Awards: EFFICIENT USE OF WATER FOR THE SUSTAINABLE AGRICULTURE UNDER CLIMATE CHANGE CONDITION (H2O-SAC3), TOWARDS A MORE SUSTAINABLE PROCESS UPGRADING OF LIGNIN-DERIVED COMPOUNDS IN A ONE-POT PROCESS WITH IN-SITU PRODUCED H2 OVER RE AND MO CARBIDES SUPPORTED ON CARBON-BASED MATERIALS., G3449067481, G3490325641, MATERIALES FOTOCATALITICOS INTELIGENTES BASADOS EN CARBONO PARA LA PURIFICACION INTEGRAL DEL AIRE. ACCION INNOVADORA HACIA UNA SOCIEDAD VERDE (SMARTMAT), GRAPHENE-DRIVEN CATALYTIC AND PHOTOCATALYTIC REACTIONS TOWARDS SUSTAINABLE ORGANIC SYNTHESIS AND ENVIRONMENT REMEDIATION (GRAPHOSER), SMART CARBON-BASED MATERIALS A BIOINSPIRED-THINKING SOLUTION TO MITIGATE ENVIRONMENTAL POLLUTION (SMARTMAT2), FORTALECIMIENTO DE LA INVESTIGACION MULTIDISCIPLINARIA PARA EL ANALISIS TEXTURAL DE MATERIALES MEDIANTE FISISORCION QUIMISORCION DE GASES Y TERMICA ACOPLADO A MASA .
OpenAlex ID: W4405921644