Formic acid-to-hydrogen on Pd/AC catalysts: Kinetic study with catalytic deactivation
EntityUAM. Departamento de Ingeniería Química
10.1016/j.apcatb.2022.121802Applied Catalysis B: Environmental 317 (2022): 121802
Funded byThe authors thank the financial support by the Community of Madrid through the project S2018/EMT-4341 and the Government of Spain through the project PID2019-105079RB-I00 (MCIU/AEI/FEDER, UE). Also, C. Martin acknowledges the Community of Madrid and the European Social Fund for the financing received through the contract PEJ2020-AI/AMB18976. G. Vega acknowledges the Universidad Autonoma ´ de Madrid for the Predoctoral contract. The authors thank Juliana Mejía for her permanent technical assistance, the "Servicio Interdepartamental de Investigacion" ´ (Sidi) of the Universidad Autonoma de Madrid (UAM), and in particular Luis Larumbe from FTIR lab and Josu´e Friedrich from TXRF lab, the “Centro Nacional de Microscopía Electronica ´ ” (ICTSCNME) of the Universidad Complutense de Madrid (UCM), in particular to Esteban Urones and the “Servicios Centrales de Apoyo a la Investigacion´ ” (SCAI), in particular to Maria del Valle Martínez de Yuso and María Dolores Marqu´es from Solidos Porosos Lab
SubjectsCatalyst deactivation; Formic acid; Hydrogen storage; Kinetic model; LOHC; Química
Rights© 2022 The Author(s)
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
A kinetic model for formic acid (FA) decomposition over a commercial 10 wt% Pd/AC catalyst has been developed to describe the hydrogen production and to understand the deactivation mechanism. The kinetic data were obtained in a batch slurry reactor in absence of mass transfer limitation at: CFA,0 = 0.25–2 M, CCAT = 1 g L−1, T = 25–85 ºC and P = 1 atm. The catalyst stability was studied in successive cycles at different temperatures. Fresh, used and regenerated Pd/AC catalysts were deeply characterized to gain insight into the activity, selectivity and stability. H2 and CO2 were the only reaction products detected. The reaction follows a first order kinetic for FA while the activity shows exponential decay with the initial FA concentration and reaction temperature. This paper represents a step forward in the on-site hydrogen production technology by using FA as liquid organic hydrogen carrier
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