Resumen: Two-zone fluidized bed reactors, devices to carry on two reactions in a single reactor, have been widely studied in our group. This work summarizes the developments achieved after a previous review published in 2005 and shows how this technology can be applied in a wide variety of reactions. The advantages for each kind of process are discussed, as well as several proposals for improvement of the reactor aimed to achieve new functions or to improve the process performance. Finally, the possibilities of this kind of reactors at industrial scale are discussed. Idioma: Inglés DOI: 10.1016/j.coche.2017.05.002 Año: 2017 Publicado en: Current Opinion in Chemical Engineering 17 (2017), 15-21 ISSN: 2211-3398 Factor impacto JCR: 4.033 (2017) Categ. JCR: ENGINEERING, CHEMICAL rank: 20 / 137 = 0.146 (2017) - Q1 - T1 Categ. JCR: BIOTECHNOLOGY & APPLIED MICROBIOLOGY rank: 28 / 160 = 0.175 (2017) - Q1 - T1 Factor impacto SCIMAGO: 1.189 - Energy (miscellaneous) (Q1)