RT journal article
T1 Upgrading of dichloromethane to olefins by hydrodechlorination: Improving process efficiency by the addition of Fe to carbon nanotubes-supported Pd catalyst
A1 Liu, Sichen
A1 Iglesias Juez, Ana
A1 Hungría Hernández, Ana Belén
A1 Martin-Martinez, María
A1 Bedia García-Matamoros, Jorge
A1 Rodríguez, Juan José
A1 Gómez-Sainero, Luisa María
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Catalysts
K1 Activation energy
K1 Hydrodechlorination
K1 Dichloromethane
AB Upgrading of waste dichloromethane to produce olefins has been performed by hydrodechlorination (HDC) using bimetallic catalysts consisting of Pd-Fe/CNT, Pd-Sn/CNT and Pd-Ag/CNT. Pd/CNT was also studied. Pd-Fe/CNT showed the best performance in terms of activity (X≈81 %) and stability, with the highest selectivity to olefins (>60 %, mainly C2H4), at 350 °C, which could be mainly attributed to the existence of stable Pd-Fe interaction. Characterization results and density functional theory calculations suggest that incorporating Fe atoms into the Pd lattice changes its electronic and geometrical properties. Fe atoms show stronger dissociative adsorption of CH2Cl2 than Pd ones, leading to lower activation energies for the dechlorination of CH2Cl2 on the studied Pd-Fe(1 1 1), which also favors the formation of C-C bond between two adjacent CH2*, promoting the formation of C2H4. Pd-Sn and Pd-Ag catalysts hinder olefins formation, due to the non-reactive Sn atoms and significant metal segregation in case of Pd-Ag.
PB Elsevier B.V.
SN 1385-8947
YR 2024
FD 2024
LK http://hdl.handle.net/10498/33908
UL http://hdl.handle.net/10498/33908
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026