RT Conference Proceedings
T1 Deactivation of zirconium-phosphorus carbon catalyst on the dehydration of methanol todme reaction
A1 Torres-Liñán, Javier
A1 García-Rollán, Miguel
A1 Palomo-Jiménez, José
A1 Rosas-Martínez, Juana María
A1 Rodríguez-Mirasol, José
A1 Cordero-Alcántara, Tomás
K1 Carbón activado
AB Dimethylether (DME) can be used for energy purpose instead of GLP and diesel, or as a feedstock forfuel cells. Moreover, DME is a platform and is an attractive alternative as a clean propellant.At the moment, DME is produced by methanol dehydration. This methanol could be obtained fromsyngas produced by biomass gasification, generating a sustainable source for DME synthesis. For thisreason, DME is being deeply studied as a potential renewable substitute for petroleum derivative. Lotsof papers search for the best operating conditions of many catalysts for the production of DME, however,addressing how the catalyst deactivates, mainly by coke deposition, is also an issue of great interest forthis process.Our work focuses on this point, given that the knowledge of deactivation details will allow us optimizingthe catalyst synthesis for the best DME production process conditions. Physical (CO2 gasification) andchemical (phosphoric acid) activation of an agroindustrial waste (olive stone) have been used toprepared activated carbons that have been studied as catalyst supports for the methanol to DMEreaction. These porous carbons were impregnated with zirconium to obtain the final carbon catalysts.Thus, porous carbons containing different surface catalyst phases (C, C-P, C-Zr and C-P-Zr) wereprepared. The methanol to DME reaction experiments were carried out in a laboratory fixed bed reactorat a partial pressure of 0.04 atm and at several residence times (from 0.05 to 0.1 g·s/μm) andtemperatures (from 300 to 600ºC).The catalytic system containing surface C-P-Zr seems to present two kinds of active sites, which aredeactivated at different rates. One of them loses their activity fast (even at the lowest temperaturestudied), while the other one does not lose activity at the studied temperatures, starting to deactivate onlyat temperatures above 400ºC.
YR 2018
FD 2018-07-12
LK https://hdl.handle.net/10630/16209
UL https://hdl.handle.net/10630/16209
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.MINECO (CTQ2015-68654-R).MINECO (BES-2016-079237).MECD (FPU13/02413).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 24 ene 2026