Waffel, Daniel; Alkan, Baris; Fu, Qi; Chen, Yen-Ting; Schmidt, Stefan; Schulz, Christof; Wiggers, Hartmut; Muhler, Martin; Peng, Baoxiang:
Towards Mechanistic Understanding of Liquid-Phase Cinnamyl Alcohol Oxidation with tert-Butyl Hydroperoxide over Noble-Metal-Free LaCo₁–ₓFeₓO₃ Perovskites
In: ChemPlusChem, Vol. 84 (2019), No. 8, pp. 1155 - 1163
2019article/chapter in journalOA Hybrid
Mechanical EngineeringScientific institutes » Center for Nanointegration Duisburg-Essen (CENIDE)Faculty of Engineering » Maschinenbau und Verfahrenstechnik » Institute for Energy and Materials Processes (EMPI) » Reactive Fluids
Related: 1 publication(s)
Title in English:
Towards Mechanistic Understanding of Liquid-Phase Cinnamyl Alcohol Oxidation with tert-Butyl Hydroperoxide over Noble-Metal-Free LaCo₁–ₓFeₓO₃ Perovskites
Author:
Waffel, Daniel
;Alkan, BarisUDE
LSF ID
57961
Other
connected with university
;Fu, Qi
;Chen, Yen-Ting
;Schmidt, Stefan
;Schulz, ChristofUDE
GND
1148037985
LSF ID
48807
ORCID
0000-0002-6879-4826ORCID iD
Other
connected with university
;Wiggers, HartmutUDE
GND
172637171
LSF ID
1643
ORCID
0000-0001-8487-9937ORCID iD
Other
connected with university
;Muhler, Martin
;Peng, Baoxiang
Year of publication:
2019
Open Access?:
OA Hybrid
DOI
10.1002/cplu.201900429
Scopus ID
85071574236
Language of text:
English
Appears in
ChemPlusChem
Place of publication:
Weinheim
Publisher:
Wiley
in:
Vol. 84 (2019), No. 8, pp. 1155 - 1163
ISSN
2192-6506 Show availability online & print
ZDB ID
2646595-4
Keyword, Topic:
heterogeneous catalysis ; oxidation ; perovskite phases ; reactive intermediates ; spray-flame synthesis

Abstract in English:

Noble-metal-free perovskite oxides are promising and well-known catalysts for high-temperature gas-phase oxidation reactions, but their application in selective oxidation reactions in the liquid phase has rarely been studied. We report the liquid-phase oxidation of cinnamyl alcohol over spray-flame synthesized LaCo₁–ₓFeₓO₃ perovskite nanoparticles with tert-butyl hydroperoxide (TBHP) as the oxidizing agent under mild reaction conditions. The catalysts were characterized by XRD, BET, EDS and elemental analysis. LaCo₀.₈Fe₀.₂O₃ showed the best catalytic properties indicating a synergistic effect between cobalt and iron. The catalysts were found to be stable against metal leaching as proven by hot filtration, and the observed slight deactivation is presumably due to segregation as determined by EDS. Kinetic studies revealed an apparent activation energy of 63.6 kJ mol−¹. Combining kinetic findings with TBHP decomposition as well as control experiments revealed a complex reaction network.