Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/104065
Author(s): Miguel, C.
Soria, M.
Adélio Mendes
Luis Madeira
Title: A sorptive reactor for CO2 capture and conversion to renewable methane
Issue Date: 2017
Abstract: The aim of this work is to contribute for the scientific advancement of carbon capture and utilization technologies (CCU), while exploring the integration of intermittent renewable electricity production and substitute natural gas (SNG) production, the so-called Power-to-Gas concept. In this regard, a sorptive reactor for carrying in the same unit both CO2 capture and conversion to SNG using renewable H2 was studied, in a perspective of process intensification. The sorptive reactor containing a layered bed of a K-promoted hydrotalcite to capture CO2 by sorption (step 1) and a nickel-based catalyst for CO2 hydrogenation (step 2) is operated at 300350 °C and low pressure (2.5 bar). Integration of CO2 capture and conversion in the same unit leads to enhanced sorption capacities and desorption kinetics promoted by the steam produced in situ during the reactive regeneration stage (methanation reaction). The sorptive reactor working under continuous operation mode allows to: i) capture ca. 0.30 mol of CO2 per kilogram of sorbent and per sorption cycle, at 350 °C and pCO2 = 0.2 bar; ii) completely convert the captured CO2 into CH4; iii) reach a productivity of ca. 2.36molCH4·kgcat -1·h-1; iv) avoid CO formation at 300 °C and 1.34 bar and v) reach a CH4 purity of 35% at 350 °C after N2 purge. © 2017 Elsevier B.V.
URI: https://repositorio-aberto.up.pt/handle/10216/104065
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
info:eu-repo/grantAgreement/Comissão de Coordenação e Desenvolvimento Regional do Norte/P2020|Norte2020-Projetos Integrados ICDT/NORTE-01-0145-FEDER-000005/LEPABE-2-ECO-INNOVATION/LEPABE-2-ECO-INNOVATION
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

Files in This Item:
File Description SizeFormat 
190522.pdf
  Restricted Access
Artigo original publicado1.49 MBAdobe PDF    Request a copy from the Author(s)


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.