dc.contributor.author | Feng, Xiang | |
dc.contributor.author | Duan, Xuezhi | |
dc.contributor.author | Qian, Gang | |
dc.contributor.author | Zhou, Xinggui | |
dc.contributor.author | Chen, De | |
dc.contributor.author | Yuan, Weikang | |
dc.date.accessioned | 2019-04-25T08:22:49Z | |
dc.date.available | 2019-04-25T08:22:49Z | |
dc.date.created | 2018-11-22T14:43:24Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | Journal of Catalysis. 2014, 317 99-104. | nb_NO |
dc.identifier.issn | 0021-9517 | |
dc.identifier.uri | http://hdl.handle.net/11250/2595396 | |
dc.description.abstract | Propene epoxidation with H2/O2 is a typical structure-sensitive reaction. For a given support containing tetra-coordinated Ti species such as TS-1, the catalytic activity is greatly influenced by supported Au nanoparticle size. The identification of size-dependent activity of Au catalyst was achieved over a series of Au nanoparticles (2.6–5.1 nm) deposited on the exterior surface of TS-1 by employing uncalcined TS-1. Through this approach, we could obtain very stable Au catalysts with distinguishable and uniform-sized Au particles, which are critical for structure-sensitivity analysis. The PO formation rate (molPO s−1 molAu−1) over these catalysts was found to vary with average Au diameter (d) as d−2.7±0.3. Moreover, typical Au nanoparticles on uncalcined TS-1 appeared as truncated cuboctahedron with top facet of (1 1 1). Model calculations derived from the representative Au particle shape and the above size-dependent activity were then performed to show that corner sites of Au nanoparticles are dominant Au active sites for propene epoxidation. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Insights into size-dependent activity and active sites of Au nanoparticles supported on TS-1 for propene epoxidation with H2 and O2 | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 99-104 | nb_NO |
dc.source.volume | 317 | nb_NO |
dc.source.journal | Journal of Catalysis | nb_NO |
dc.identifier.doi | https://doi.org/10.1016/j.jcat.2014.05.006 | |
dc.identifier.cristin | 1633837 | |
dc.description.localcode | © 2014. This is the authors’ accepted and refereed manuscript to the article. Locked until 10 July 2016 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | nb_NO |
cristin.unitcode | 194,66,30,0 | |
cristin.unitname | Institutt for kjemisk prosessteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |