Photocatalytic hydrogenation of acetophenone on a titanium dioxide cellulose film

dc.contributor.authorThiel, Tabea A.
dc.contributor.authorObata, Keisuke
dc.contributor.authorAbdi, Fatwa F.
dc.contributor.authorvan de Krol, Roel
dc.contributor.authorSchomäcker, Reinhard
dc.contributor.authorSchwarze, Michael
dc.date.accessioned2022-05-05T14:34:56Z
dc.date.available2022-05-05T14:34:56Z
dc.date.issued2022
dc.description.abstractA previously developed sustainable immobilization concept for photocatalysts based on cellulose as a renewable support material was applied for the photocatalytic hydrogenation of acetophenone (ACP) to 1-phenyl ethanol (PE). Four different TiO2 modifications (P25, P90, PC105, and PC500) were screened for the reaction showing good performance for PC25 and PC500. PC500 was selected for a detailed kinetic study to find the optimal operating conditions, and to obtain a better understanding of the photocatalytic pathway in relation to conventional and transfer hydrogenation. The kinetic data were analyzed using the pseudo-first-order reaction rate law. A complete conversion was obtained for ACP concentrations below 1 mM using a 360 nm filter and argon as the purge gas within 2–3 hours. High oxygen concentrations slow down or prevent the reaction, and wavelengths below 300 nm lead to side-products. By investigating the temperature dependency, an activation energy of 22 kJ mol−1 was determined which is lower than the activation energies for conventional and transfer hydrogenation, because the light activation of the photocatalyst turns the endothermic to an exothermic reaction. PC500 was immobilized onto the cellulose film showing a 37% lower activity that remains almost constant after multiple use.en
dc.description.sponsorshipDFG, 414044773, Open Access Publizieren 2021 - 2022 / Technische Universität Berlinen
dc.description.sponsorshipDFG, 390540038, EXC 2008: Unifying Systems in Catalysis "UniSysCat"en
dc.identifier.eissn2046-2069
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/16801
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-15579
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by-nc/3.0/en
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.subject.otherphotocatalytic hydrogenationen
dc.subject.otheracetophenoneen
dc.subject.othertitanium dioxideen
dc.subject.othercellulose filmen
dc.subject.otherphotocatalystsen
dc.titlePhotocatalytic hydrogenation of acetophenone on a titanium dioxide cellulose filmen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1039/D1RA09294Den
dcterms.bibliographicCitation.issue12en
dcterms.bibliographicCitation.journaltitleRSC Advancesen
dcterms.bibliographicCitation.originalpublishernameRoyal Society of Chemistryen
dcterms.bibliographicCitation.originalpublisherplaceLondonen
dcterms.bibliographicCitation.pageend7065en
dcterms.bibliographicCitation.pagestart7055en
dcterms.bibliographicCitation.volume12en
tub.accessrights.dnbfreeen
tub.affiliationFak. 2 Mathematik und Naturwissenschaften>Inst. Chemie>FG Technische Chemiede
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.groupFG Technische Chemiede
tub.affiliation.instituteInst. Chemiede
tub.publisher.universityorinstitutionTechnische Universität Berlinen
Files
Original bundle
Now showing 1 - 1 of 1
Loading…
Thumbnail Image
Name:
d1ra09294d.pdf
Size:
1.44 MB
Format:
Adobe Portable Document Format
Description:
Collections