RT Journal Article
T1 Deactivation and regeneration of activated carbon-supported Rh and Ru catalysts in the hydrodechlorination of chloromethanes into light olefins
A1 Martín Martínez, María
A1 Rodriguez, Juan
A1 Baker, Richard
A1 Gómez-Sainero, Luisa
AB This work analyses the deactivation of activated carbon-supported Rh and Ru (both at 1 wt%) catalysts (Rh/C and Ru/C) in the hydrodechlorination (HDC) of dichloromethane (DCM) and chloroform (TCM). The deactivation can be mainly attributed to the coverage of active metal centres by organometallic species resulting from the chemisorption of reaction products, such as olefins, at the electro-deficient metal sites. With DCM, the activity of Ru/C decreased by more than 80% after 90 h on stream at 250 °C and with a space time of 1.7 kg h mol−1. Under the same conditions, with TCM, the Rh/C and Ru/C catalysts lost 75% of activity after 84 and 54 h on stream, respectively. A regeneration treatment with air at 250 °C allowed complete recovery of the catalytic activity. After each deactivation-regeneration cycle, the selectivity to olefins increased. Therefore, HDC with the catalysts tested provides a promising way for the upgrading of chloromethanes from waste gas streams into light olefins
PB Elsevier
SN 1385-8947
YR 2020
FD 2020
LK https://hdl.handle.net/20.500.14352/107207
UL https://hdl.handle.net/20.500.14352/107207
LA eng
NO Maria Martin-Martinez, Juan J. Rodriguez, Richard T. Baker, Luisa M. Gómez-Sainero, Deactivation and regeneration of activated carbon-supported Rh and Ru catalysts in the hydrodechlorination of chloromethanes into light olefins, Chemical Engineering Journal, Volume 397, 2020, 125479, ISSN 1385-8947, https://doi.org/10.1016/j.cej.2020.125479.
DS Docta Complutense
RD 5 abr 2025