165660 20260113234334.0 doi 10.1016/j.cattod.2020.03.025 sideral 117119 ART-2020-117119 eng Zapater, D. Universidad de Zaragoza Counteracting SAPO-34 catalyst deactivation in MTO process using a two zone fluidized bed reactor: Reactor testing and process viability 2020 Deactivation of SAPO-34 catalyst is a common problem in methanol to olefins (MTO) process. Due to its shape selectivity to olefins, SAPO-34 is one of the best zeolites for this purpose, but this advantage also makes its deactivation faster and more pronounced due to pore blockage or coke formation. Commonly, deactivation can be reduced by feeding water alongside with methanol, but this option only reduces but does not fully avoids deactivation. To solve this problem, we propose the use of a reactor in which reaction and regeneration of the catalyst take place simultaneously in the same unit. In this work, the comparison between conventional (CFBR) and two zone (TZFBR) fluidized bed reactors is presented, as well as a parametric study of some of the most important variables that define the TZFBR operation. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/MINECO/CTQ2016-76533-R info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 6.766 2020 CHEMISTRY, APPLIED 10 / 74 = 0.135 2020 Q1 T1 ENGINEERING, CHEMICAL 19 / 143 = 0.133 2020 Q1 T1 CHEMISTRY, PHYSICAL 36 / 162 = 0.222 2020 Q1 T1 1.397 2020 Chemistry (miscellaneous) 2020 Q1 Catalysis 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Lasobras, J. (orcid)0000-0002-7488-6196 Soler, J. Universidad de Zaragoza (orcid)0000-0001-9022-2835 Herguido, J. Universidad de Zaragoza (orcid)0000-0003-1940-9597 Menéndez, M. Universidad de Zaragoza (orcid)0000-0002-2494-102X 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 362 (2020), 155-161 Catal. today Catalysis Today 0920-5861 1216835 http://zaguan.unizar.es/record/165660/files/texto_completo.pdf Postprint 1054427 http://zaguan.unizar.es/record/165660/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:165660 articulos driver 2026-01-13-22:05:15 ARTICLE