RT Journal Article
T1 Insight into the deactivation and regeneration of HZSM-5 zeolite catalysts in the conversion of dimethyl ether to olefins
A1 Cordero-Lanzac, Tomás
A1 Ateka, Ainara
A1 Pérez-Uriarte, Paula
A1 Castaño, Pedro
A1 Aguayo, Andrés T.
A1 Bilbao, Javier
K1 Catálisis heterpgénea
K1 Zeolitas
K1 Hidrocarburos
AB The impact of different process variables affecting the coking and rejuvenation ofHZSM-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) thematrix material with mesopores; (ii) temperature; (iii) space time; (iv) acidity of thecatalyst; (v) steam, inert or air in the reaction-regeneration medium. Used catalysts havebeen characterized through N2 adsorption-desorption and temperature-programmedoxidation and the presence of three coke fractions has been identified deposited withinthe zeolite micropores, the external surface of the crystals and the mesopores of thematrix. Low Si/Al ratios (140) and temperatures (350 ºC), and co-feeding water withDME, reduce the formation of coke within the zeolite micropores, favoring the stabilityof the catalyst. Reaction-regeneration cycles confirm that catalysts totally recover theactivity through combustion of coke during a heating ramp up to 550 ºC.
PB American Chemical Society
YR 2018
FD 2018
LK https://hdl.handle.net/10630/45274
UL https://hdl.handle.net/10630/45274
LA eng
NO 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
NO https://openpolicyfinder.jisc.ac.uk/id/publication/7779?from=single_hit
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 28 feb 2026