Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 18994-19001 |
| Seitenumfang | 8 |
| Fachzeitschrift | New Journal of Chemistry |
| Jahrgang | 44 |
| Ausgabenummer | 44 |
| Frühes Online-Datum | 15 Okt. 2020 |
| Publikationsstatus | Veröffentlicht - 28 Nov. 2020 |
Abstract
The effect of reduction temperature on the structure of mesoporous Ni-Fe-Al2O3 catalysts and their catalytic activity for the oxidative dehydrogenation of ethane (ODH) have been investigated. Low reduction temperature at 400 °C leads to the reduction of Fe3+-based oxides to lower valence FeOx species, but nickel ions in the [-Ni-O-Al-] framework cannot be reduced at this temperature. These highly dispersed Ni2+-based oxide and FeOx species with close proximity contribute to ethane dehydrogenation and N2O decomposition, respectively. When the reduction temperature is increased to 600 °C, a continuous reduction and migration of Ni2+ from the bulk phase to the surface took place, forming 5-6 nm isolated metallic Ni nanoparticles, which resulted in a decrease in catalyst activity under this condition. Thus, highly dispersed Ni2+-based oxide and FeOx species with close proximity effectively contribute to the selective conversion of ethane to ethylene. This journal is
ASJC Scopus Sachgebiete
- Chemische Verfahrenstechnik (insg.)
- Katalyse
- Chemie (insg.)
- Allgemeine Chemie
- Werkstoffwissenschaften (insg.)
- Werkstoffchemie
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in: New Journal of Chemistry, Jahrgang 44, Nr. 44, 28.11.2020, S. 18994-19001.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Effect of reduction temperature on the structure and catalytic performance of mesoporous Ni-Fe-Al2O3in oxidative dehydrogenation of ethane
AU - Xu, Xia
AU - Kumar Megarajan, Suresh
AU - Xia, Xuefa
AU - Toghan, Arafat
AU - Feldhoff, Armin
AU - Zhang, Yan
AU - Jiang, Heqing
N1 - Funding Information: This research was financially supported by the Natural Science Foundation of China (21676284 and 21536005), the Director Innovation Fund of Key Laboratory of Biofuels, Chinese Academy of Sciences (grant Y57201190V), and the Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia (project number 510).
PY - 2020/11/28
Y1 - 2020/11/28
N2 - The effect of reduction temperature on the structure of mesoporous Ni-Fe-Al2O3 catalysts and their catalytic activity for the oxidative dehydrogenation of ethane (ODH) have been investigated. Low reduction temperature at 400 °C leads to the reduction of Fe3+-based oxides to lower valence FeOx species, but nickel ions in the [-Ni-O-Al-] framework cannot be reduced at this temperature. These highly dispersed Ni2+-based oxide and FeOx species with close proximity contribute to ethane dehydrogenation and N2O decomposition, respectively. When the reduction temperature is increased to 600 °C, a continuous reduction and migration of Ni2+ from the bulk phase to the surface took place, forming 5-6 nm isolated metallic Ni nanoparticles, which resulted in a decrease in catalyst activity under this condition. Thus, highly dispersed Ni2+-based oxide and FeOx species with close proximity effectively contribute to the selective conversion of ethane to ethylene. This journal is
AB - The effect of reduction temperature on the structure of mesoporous Ni-Fe-Al2O3 catalysts and their catalytic activity for the oxidative dehydrogenation of ethane (ODH) have been investigated. Low reduction temperature at 400 °C leads to the reduction of Fe3+-based oxides to lower valence FeOx species, but nickel ions in the [-Ni-O-Al-] framework cannot be reduced at this temperature. These highly dispersed Ni2+-based oxide and FeOx species with close proximity contribute to ethane dehydrogenation and N2O decomposition, respectively. When the reduction temperature is increased to 600 °C, a continuous reduction and migration of Ni2+ from the bulk phase to the surface took place, forming 5-6 nm isolated metallic Ni nanoparticles, which resulted in a decrease in catalyst activity under this condition. Thus, highly dispersed Ni2+-based oxide and FeOx species with close proximity effectively contribute to the selective conversion of ethane to ethylene. This journal is
UR - http://www.scopus.com/inward/record.url?scp=85096311988&partnerID=8YFLogxK
U2 - 10.1039/d0nj02618b
DO - 10.1039/d0nj02618b
M3 - Article
AN - SCOPUS:85096311988
VL - 44
SP - 18994
EP - 19001
JO - New Journal of Chemistry
JF - New Journal of Chemistry
SN - 1144-0546
IS - 44
ER -