Yang, Q;
Li, X;
Tang, J;
(2022)
Tuning selectivity among acetalization, pinacol coupling, and hydrogenation reactions of benzaldehyde by catalytic and photochemical pathways at room temperature.
Materials Today Energy
, 23
, Article 100890. 10.1016/j.mtener.2021.100890.
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Abstract
Benzaldehyde is one of the industrially most useful feedstocks, and its transformation to high-value chemicals is very attractive. Different transformations of benzaldehyde, such as acetalization, pinacol coupling, and hydrogenation, have been achieved herein by adjusting pH, light source, and selection of a catalyst. Consequently, the corresponding products have been obtained with excellent yields (e.g. 92% yield for acetalization, 96% yield for pinacol coupling, and 85% yield for hydrogenation). The mechanisms behind each transformation were studied, and it revealed that pinacol coupling reaction was achieved through a photochemical process under 365 nm irradiation at pH 12, where the introduction of the TiO2 (P25) catalyst would completely shift the selectivity toward benzyl alcohol through a photocatalytic pathway and to benzaldehyde dimethyl acetal via low-temperature thermal catalysis.
| Type: | Article |
|---|---|
| Title: | Tuning selectivity among acetalization, pinacol coupling, and hydrogenation reactions of benzaldehyde by catalytic and photochemical pathways at room temperature |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.mtener.2021.100890 |
| Publisher version: | https://doi.org/10.1016/j.mtener.2021.100890 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10142930 |
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