2026-06-04T00:16:32Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/452742026-02-10T00:46:13Zcom_10630_2254col_10630_37953
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Cordero-Lanzac, Tomás
author
Ateka, Ainara
author
Pérez-Uriarte, Paula
author
Castaño, Pedro
author
Aguayo, Andrés T.
author
Bilbao, Javier
2026-02-09T10:41:28Z
2018
T. Cordero-Lanzac, A. Ateka, P. Pérez-Uriarte, P. Castaño, A.T. Aguayo, J. Bilbao. Insight into the Deactivation and Regeneration of HZSM-5 Zeolite Catalysts in the Conversion of Dimethyl Ether to Olefins. Ind. Eng. Chem. Res. 57 (2018) 13689-13702
https://hdl.handle.net/10630/45274
10.1021/acs.iecr.8b03308
The impact of different process variables affecting the coking and rejuvenation of
HZSM-5 zeolite catalyst has been studied during the conversion of dimethyl ether
(DME) to olefins in a fixed bed reactor. Those variables involve the effect of (i) the
matrix material with mesopores; (ii) temperature; (iii) space time; (iv) acidity of the
catalyst; (v) steam, inert or air in the reaction-regeneration medium. Used catalysts have
been characterized through N2 adsorption-desorption and temperature-programmed
oxidation and the presence of three coke fractions has been identified deposited within
the zeolite micropores, the external surface of the crystals and the mesopores of the
matrix. Low Si/Al ratios (140) and temperatures (350 ºC), and co-feeding water with
DME, reduce the formation of coke within the zeolite micropores, favoring the stability
of the catalyst. Reaction-regeneration cycles confirm that catalysts totally recover the
activity through combustion of coke during a heating ramp up to 550 ºC.
eng
Catálisis heterpgénea
Zeolitas
Hidrocarburos
Insight into the deactivation and regeneration of HZSM-5 zeolite catalysts in the conversion of dimethyl ether to olefins
journal article
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