Details
| Original language | English |
|---|---|
| Pages (from-to) | 354-364 |
| Number of pages | 11 |
| Journal | Catalysis today |
| Volume | 335 |
| Early online date | 26 Dec 2018 |
| Publication status | Published - 1 Sept 2019 |
Abstract
Sacrificial electron donors are frequently used in photocatalytic reactions to enhance the performance of the reaction, typically short-chain alcohols as well as their respective aldehydes and acids are used. This study focuses on the differences between the individual electron donors regarding their oxidation rates, mechanistic pathways, the influence of the intermediates and their direct impact on the H 2O 2 generation. The individual H 2O 2 formation rates of 16 different electron donors, photonic and faradaic efficiencies for H 2O 2 production are carefully discussed. Furthermore, a new multi-reaction pathway for t-butanol oxidation is postulated and critically examined.
Keywords
- Alcohol oxidation, Hydrogen peroxide, Photocatalysis, Reaction kinetics, Reaction pathway, Sacrificial electron donors
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
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In: Catalysis today, Vol. 335, 01.09.2019, p. 354-364.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Kinetic effects and oxidation pathways of sacrificial electron donors on the example of the photocatalytic reduction of molecular oxygen to hydrogen peroxide over illuminated titanium dioxide
AU - Burek, Bastien O.
AU - Timm, Jana
AU - Bahnemann, Detlef
AU - Bloh, Jonathan Z.
N1 - Funding information: The authors B. O. B. and J. Z. B. gratefully thank German Research Foundation (DFG) for funding (grant number BL 1425/1-1 ). All authors thank Ina Huth for LCMS measurements, Martin Eckert, Nicky Bogolowski and Julia Patzsch, DECHEMA Forschungsinstitut, for their support with the analytical methods and Heinrich Kopietz, Jano Bender and Yvonne Hohmann, DECHEMA Forschungsinstitut machine work shop, for help with technical drawings and building of the set-ups.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Sacrificial electron donors are frequently used in photocatalytic reactions to enhance the performance of the reaction, typically short-chain alcohols as well as their respective aldehydes and acids are used. This study focuses on the differences between the individual electron donors regarding their oxidation rates, mechanistic pathways, the influence of the intermediates and their direct impact on the H 2O 2 generation. The individual H 2O 2 formation rates of 16 different electron donors, photonic and faradaic efficiencies for H 2O 2 production are carefully discussed. Furthermore, a new multi-reaction pathway for t-butanol oxidation is postulated and critically examined.
AB - Sacrificial electron donors are frequently used in photocatalytic reactions to enhance the performance of the reaction, typically short-chain alcohols as well as their respective aldehydes and acids are used. This study focuses on the differences between the individual electron donors regarding their oxidation rates, mechanistic pathways, the influence of the intermediates and their direct impact on the H 2O 2 generation. The individual H 2O 2 formation rates of 16 different electron donors, photonic and faradaic efficiencies for H 2O 2 production are carefully discussed. Furthermore, a new multi-reaction pathway for t-butanol oxidation is postulated and critically examined.
KW - Alcohol oxidation
KW - Hydrogen peroxide
KW - Photocatalysis
KW - Reaction kinetics
KW - Reaction pathway
KW - Sacrificial electron donors
UR - http://www.scopus.com/inward/record.url?scp=85059225808&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2018.12.044
DO - 10.1016/j.cattod.2018.12.044
M3 - Article
VL - 335
SP - 354
EP - 364
JO - Catalysis today
JF - Catalysis today
SN - 0920-5861
ER -