dc.contributor.author | Ateka Bilbao, Ainara | |
dc.contributor.author | Ereña Loizaga, Javier | |
dc.contributor.author | Bilbao Elorriaga, Javier | |
dc.contributor.author | Aguayo Urquijo, Andrés Tomás | |
dc.date.accessioned | 2024-05-08T17:01:22Z | |
dc.date.available | 2024-05-08T17:01:22Z | |
dc.date.issued | 2019-12-16 | |
dc.identifier.citation | Industrial & Engineering Chemistry Research 59(2) : 713-722 (2020) | es_ES |
dc.identifier.issn | 0888-5885 | |
dc.identifier.issn | 1520-5045 | |
dc.identifier.uri | http://hdl.handle.net/10810/67784 | |
dc.description.abstract | The intensification of CO2 valorization has been theoretically studied in the direct synthesis of dimethyl ether (DME) carried out in a packed-bed reactor by means of two strategies pursuing the attenuation of the thermodynamic limitations of the process. Thus, the recycling of the nonconverted reactants, and the use of H2O perm-selective membranes, with different sweeping strategies has been studied. Special attention has been paid to improving the yield of DME and the conversion of CO2, seeking for a good
balance between both objectives. The study has been conducted using the kinetic model previously established for a CuO−ZnO−MnO/SAPO-18 catalyst. Quantifying the deactivation kinetics in the kinetic model has allowed us to ascertain that both strategies contribute to attenuating deactivation. With a recirculation factor of 0.97, for a CO2/COx ratio in the feed of 0.25, at 275 °C and 30 bar, a CO2 conversion of 70% and a DME yield of 60% are achieved. Using in the simulation a membrane with a H2O permeability of 1 × 10−7 mol s−1 m2 Pa−1 and a H2O/H2 selectivity of 4, feasible with H-SOD type zeolite membranes, increases CO2 conversion up to 3.5−5% with regard to that obtained in a packed-bed reactor, and the upgrade in DME yield stands out, reaching an improvement of 25% for the hydrogenation of pure CO2, regardless of the sweeping strategy used (parallel or countercurrent mode, or the use of pure H2 or H2 + CO + CO2). | es_ES |
dc.description.sponsorship | This work has been carried out with the financial support of the Ministry of Economy and Competitiveness of the Spanish Government (CTQ2016-77812-R), the Basque Government (Project IT1218-19), the ERDF funds, and the European Commission (HORIZON H2020-MSCA RISE-2018. Contract No. 823745). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | ACS | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/823745 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/CTQ2016-77812-R | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | CO2 | es_ES |
dc.subject | dimethyl ether | es_ES |
dc.subject | recirculation | es_ES |
dc.subject | membrane | es_ES |
dc.subject | bifunctional catalyst | es_ES |
dc.subject | syngas | es_ES |
dc.subject | valorization | es_ES |
dc.title | Strategies for the intensification of CO2 valorization in the one-step dimethyl ether synthesis process | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2019 American Chemical Society | es_ES |
dc.relation.publisherversion | https://pubs.acs.org/doi/10.1021/acs.iecr.9b05749 | es_ES |
dc.identifier.doi | 10.1021/acs.iecr.9b05749 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Ingeniería química | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa | es_ES |