Dimethyl ether synthesis on clinoptilolite zeolite and HZSM5-based hybrid catalysts in a fixed-bed reactor

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dc.authoridYasar, Muzaffer/0000-0001-5877-8008
dc.contributor.authorGurdal, Savas
dc.contributor.authorYasar, Muzaffer
dc.date.accessioned2025-01-27T20:25:10Z
dc.date.available2025-01-27T20:25:10Z
dc.date.issued2023
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this study 4 different acid catalysts were prepared and mixed with commercial CZA catalysts and investigated in direct DME synthesis. Some of the used acid catalysts were not investigated in the literature therefore the work involves novelty. In a fixed-bed reactor, dimethyl ether (DME) was synthesized from the synthesis gas on two catalysts from, natural clinoptilolite and zeolite catalysts. The clinoptilolite (HK and DK) and two (HZSM5(117) and HZSM5(360)) catalysts mixed with commercial CuO/ZnO/Al2O3 (CZN) catalysts. The catalysts were also characterized by analytical chemistry techniques such as XRD, BET, TGA, and FTIR. Four different catalysts (HK, DK, HZSM5(117) and HZSM5(360)) and CZA catalysts were mixed at a ratio of 3/1, respectively, and studies were carried out in a fixed-bed reactor. Four different catalyst composition activity tests were made at tem-peratures 250, 275, and 300 & DEG;C. At the same time, the pressure was 30 and 40 bar and four different times (30, 60, 90, and 120 min). The composition of the gases fed to the system for DME was adjusted to N2/CO2/CO/H2 = 36/10/18/36 by volume. DME selectivity (SDME) and total carbon (XC) conversion were calculated for each condition. The experimental results showed that the highest DME selectivity of 96.50% was observed in the reaction of the DK + CZA catalyst mixture at 250 & DEG;C and 30 min at 40 bar. In addition, high DME selectivity was obtained in all reactions of DK + CZA and HK + CZA catalyst compositions at three different temperatures. The highest DME selectivity obtained is 89.69% for the reaction of the HK + CZA catalyst mixture at 300 & DEG;C and 60 min at 30 bar. Experimental results gave insights into Dimethyl ether synthesis from syngas on clinoptilolite zeolite and HZSM5-based hybrid catalysts in a fixed-bed reactor.& COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey 2211-C Program [1649B03150346]; Istanbul University-Cerrahpasa Scientific Research Projects [FDK-2017-24933]
dc.description.sponsorshipThis publication was created within the scope of Savas Gurdal's doctoral thesis. This study was supported by The Scientific and Technological Research Council of Turkey 2211-C Program with number 1649B03150346 and Istanbul University-Cerrahpasa Scientific Research Projects project number FDK-2017-24933.
dc.identifier.doi10.1016/j.ijhydene.2023.01.188
dc.identifier.endpage22987
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.issue60
dc.identifier.scopus2-s2.0-85150789637
dc.identifier.scopusqualityQ1
dc.identifier.startpage22978
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2023.01.188
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22450
dc.identifier.volume48
dc.identifier.wosWOS:001028144300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectDimethyl ether
dc.subjectClinoptilolite
dc.subjectSynthesis gas
dc.subjectCatalysts
dc.subjectFixed-bed reactor
dc.titleDimethyl ether synthesis on clinoptilolite zeolite and HZSM5-based hybrid catalysts in a fixed-bed reactor
dc.typeArticle

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