Hydrophobic RWGS catalysts: Valorization of CO2-rich streams in presence of CO/H2O

Tarifa, P. ; González-Castaño, M. ; Cazaña, F. (Universidad de Zaragoza) ; Monzón, A. (Universidad de Zaragoza) ; Arellano-García, H.

Resumen: Nowadays, the majority of the Reverse Water Gas Shift (RWGS) studies assume somehow model feedstock (diluted CO2/H2) for syngas production. Nonetheless, biogas streams contain certain amounts of CO/H2O which will decrease the obtained CO2 conversion values by promoting the forward WGS reaction. Since the rate limiting step for the WGS reaction concerns the water splitting, this work proposes the use of hydrophobic RWGS catalysts as an effective strategy for the valorization of CO2-rich feedstock in presence of H2O and CO. Over Fe-Mg catalysts, the different hydrophilicities attained over pristine, N- and B-doped carbonaceous supports accounted for the impact on the activity of the catalyst in presence of CO/H2O. Overall, the higher CO productivity (4.12 μmol/(min·m2)) attained by Fe-Mg/CDC in presence of 20 % of H2O relates to hindered water adsorption and unveil the use of hydrophobic surfaces as a suitable approach for avoiding costly pre-conditioning units for the valorization of CO2-rich streams based on RWGS processes in presence of CO/H2O.

Idioma: Inglés

DOI: 10.1016/j.cattod.2023.114276

Año: 2023

Publicado en: Catalysis Today 423 (2023), 114276 [9 pp.]
ISSN: 0920-5861

Factor impacto JCR: 5.2 (2023)

Categ. JCR: CHEMISTRY, APPLIED rank: 13 / 74 = 0.176 (2023) - Q1 - T1
Categ. JCR: ENGINEERING, CHEMICAL rank: 35 / 170 = 0.206 (2023) - Q1 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 60 / 178 = 0.337 (2023) - Q2 - T2

Factor impacto CITESCORE: 11.5 - Chemistry (all) (Q1) - Catalysis (Q1)

Factor impacto SCIMAGO: 1.022 - Chemistry (miscellaneous) (Q1) - Catalysis (Q2)

Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2020-113809RB-C31/AEI/10.13039/501100011033

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)