RT Journal Article
T1 Activation of n-pentane while prolonging HZSM-5 catalyst lifetime during its combined reaction with methanol or dimethyl ether
A1 Cordero-Lanzac, Tomás
A1 Martínez, Cristina
A1 Aguayo, Andrés T.
A1 Castaño, Pedro
A1 Bilbao, Javier
A1 Corma, Avelino
K1 Catálisis
K1 Hidrocarburos
K1 Procesos químicos
AB This work explores the synergies during combined reactions of n-pentane (nC5) withoxygenates (methanol or dimethyl ether, OX). The experimental runs have been carriedout in a packed bed reactor at 500 ºC, using a high silica HZSM-5 zeolite-based catalystwith different oxygenate-to-n-pentane (OX/nC5) ratios in the feed. A significantenhancement of the n-pentane conversion occurs for low OX/nC5 ratios in the feed (0.1-0.25), especially when using dimethyl ether (DME). In addition, the presence of npentane reduces the rate of catalyst deactivation by coking during the conversion ofoxygenates. These results have been explained on the grounds of a mechanisticinteraction between the reactants: (1) the fast formation of methoxy and olefinintermediates from oxygenates, particularly from DME, could explain the promotion ofn-pentane cracking, by facilitating the activation of the alkane by hydrogen transferreactions; (2) the attenuation of deactivation during the conversion of oxygenates couldbe related to a lower extent of the arene cycle in the dual-cycle mechanism (limiting thepolymethylbenzene formation). The analyses of used catalysts by means of temperatureprogrammed oxidation and confocal fluorescence microscopy have pointed out thehigher reactivity of DME than that of methanol also for yielding coke structures.
PB Elsevier
YR 2022
FD 2022
LK https://hdl.handle.net/10630/45284
UL https://hdl.handle.net/10630/45284
LA eng
NO T. Cordero-Lanzac, C. Martínez, Andrés T. Aguayo, P. Castaño, J. Bilbao, A. Corma. Activation of n-pentane while prolonging HZSM-5 catalyst lifetime during its combined reaction with methanol or dimethyl ether. Catal. Today 383 (2022) 320-329-
NO https://openpolicyfinder.jisc.ac.uk/id/publication/16707?from=single_hit
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 1 mar 2026