dc.contributor.author | Dyballa, Michael Martin | |
dc.contributor.author | Pappas, Dimitrios | |
dc.contributor.author | Borfecchia, Elisa | |
dc.contributor.author | Beato, Pablo | |
dc.contributor.author | Olsbye, Unni | |
dc.contributor.author | Lillerud, Karl Petter | |
dc.contributor.author | Arstad, Bjørnar | |
dc.contributor.author | Svelle, Stian | |
dc.date.accessioned | 2020-12-17T13:00:28Z | |
dc.date.available | 2020-12-17T13:00:28Z | |
dc.date.created | 2018-07-10T14:43:49Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Microporous and Mesoporous Materials. 2018, 265 112-122. | en_US |
dc.identifier.issn | 1387-1811 | |
dc.identifier.uri | https://hdl.handle.net/11250/2720062 | |
dc.description.abstract | This work describes the synthesis and investigation of improved SUZ-4 catalysts (SZR framework) and their application in methanol-to-olefins and methane-to-methanol conversion. We report boron containing, dealuminated and desilicated SUZ-4 catalysts. Ammonia and pyridine probe molecules enabled the assignment of acid site densities to the 10-MR and 8-MR pores, respectively. The difference in between the theoretically expected and the for the probes accessible acid site density is a good descriptor for the accessibility of pores and acid sites. The access to the 8-MR SUZ-4 pores is sterically hindered by counter ions as well as extra framework aluminum (EFAl) species that account for up to 15% of the aluminum. Dealumination and desilication were successfully applied to optimize the diffusion properties and resulted in outstandingly high BET surface area, nSi/nAl-ratios and potassium exchange degrees. The improved accessibility led to an up to 2-fold increased MTO conversion capacity of the catalysts. Cu-exchanged SUZ-4 was applied in the selective oxidation of methane to methanol. By operando X-ray absorption spectroscopy (XAS) we showed that CuII ions are mainly coordinated in 2Al sites of 6-MR motifs and inhibited for redox-reactions. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.subject | Probe molecules | en_US |
dc.subject | Desilication | en_US |
dc.subject | Methane-to-methanol conversion | en_US |
dc.subject | Methanol-to-olefin conversion (MTO) | en_US |
dc.subject | SUZ-4 improve | en_US |
dc.title | Tuning the material and catalytic properties of SUZ-4 zeolites for the conversion of methanol or methane | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | This is the accepted manuscript of the article available at ScienceDirect: https://www.sciencedirect.com/science/article/pii/S1387181118300635?via%3Dihub | en_US |
dc.source.pagenumber | 112-122 | en_US |
dc.source.volume | 265 | en_US |
dc.source.journal | Microporous and Mesoporous Materials | en_US |
dc.identifier.doi | 10.1016/j.micromeso.2018.02.004 | |
dc.identifier.cristin | 1596578 | |
dc.relation.project | Norges forskningsråd: 237922 | en_US |
cristin.unitcode | 7401,80,0,0 | |
cristin.unitcode | 7401,80,40,0 | |
cristin.unitname | SINTEF Industri | |
cristin.unitname | Prosessteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |