Oxidative dehydrogenation of ethane with CO2 over CrOx catalysts supported on Al2O3, ZrO2, CeO2 and CexZr1-xO2
2
Institute of Catalysis and Petroleumchemistry, CSIC, 2 Marie Curie Str., Madrid, 28049, Spain
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Publication type: Journal Article
Publication date: 2019-08-01
scimago Q1
wos Q1
SJR: 1.050
CiteScore: 11.2
Impact factor: 5.3
ISSN: 09205861, 18734308
General Chemistry
Catalysis
Abstract
The effect of the support nature on the catalytic activity and stability of CrOx-containing catalysts supported on γ-Al2O3, ZrO2, CeO2 and CexZr(1-x)O2 has been investigated in the oxidative dehydrogenation of ethane with CO2 as a mild oxidant (ODH-CO2). The catalysts were prepared by wetness impregnation and characterized as-prepared and after catalytic tests using N2 adsorption, XRD, UV-Vis diffuse reflectance (DR) and Raman spectroscopies, TPR-H2 and TPO-CO2. The catalysts CrOx/γ-Al2O3 and CrOx/ZrO2 exhibited the highest ethylene formation rates, but the reaction followed different pathways on each: on CrOx/γ-Al2O3 catalyst ethylene is formed by a direct dehydrogenation (DDH) of ethane accompanied by RWGS, while on CrOx/ZrO2 ethylene is formed by selective oxidative dehydrogenation. The nature of the support influences the oxidation state of chromium species. The reaction pathway, catalytic activity and stability of the catalyst depend on both chromium state and support properties, in particular, on its acid-base and red-ox properties.
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Bugrova T. A. et al. Oxidative dehydrogenation of ethane with CO2 over CrOx catalysts supported on Al2O3, ZrO2, CeO2 and CexZr1-xO2 // Catalysis Today. 2019. Vol. 333. pp. 71-80.
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Bugrova T. A., Dutov V. V., Svetlichnyi V., Cortés Corberán V., Mamontov G. Oxidative dehydrogenation of ethane with CO2 over CrOx catalysts supported on Al2O3, ZrO2, CeO2 and CexZr1-xO2 // Catalysis Today. 2019. Vol. 333. pp. 71-80.
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TY - JOUR
DO - 10.1016/j.cattod.2018.04.047
UR - https://doi.org/10.1016/j.cattod.2018.04.047
TI - Oxidative dehydrogenation of ethane with CO2 over CrOx catalysts supported on Al2O3, ZrO2, CeO2 and CexZr1-xO2
T2 - Catalysis Today
AU - Bugrova, Tatiana A
AU - Dutov, Valerii V
AU - Svetlichnyi, Valery
AU - Cortés Corberán, Vicente
AU - Mamontov, Grigory
PY - 2019
DA - 2019/08/01
PB - Elsevier
SP - 71-80
VL - 333
SN - 0920-5861
SN - 1873-4308
ER -
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@article{2019_Bugrova,
author = {Tatiana A Bugrova and Valerii V Dutov and Valery Svetlichnyi and Vicente Cortés Corberán and Grigory Mamontov},
title = {Oxidative dehydrogenation of ethane with CO2 over CrOx catalysts supported on Al2O3, ZrO2, CeO2 and CexZr1-xO2},
journal = {Catalysis Today},
year = {2019},
volume = {333},
publisher = {Elsevier},
month = {aug},
url = {https://doi.org/10.1016/j.cattod.2018.04.047},
pages = {71--80},
doi = {10.1016/j.cattod.2018.04.047}
}