| Autor: |
Anna Malaika, Julia Gertig, Paulina Rechnia, Aleksandra Miklaszewska, Mieczysław Kozłowski |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Arabian Journal of Chemistry, Vol 12, Iss 8, Pp 4947-4956 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1878-5352 |
| DOI: |
10.1016/j.arabjc.2016.10.013 |
| Popis: |
Oxidative dehydrogenation of hydrocarbons has been gained much attention for years as the use of an oxidant allows overcoming the thermodynamic limitations of the classical dehydrogenation reaction. In this paper, the catalytic oxidative dehydrogenation of ethylbenzene in the presence of nitrobenzene was studied. In the process various metal catalysts (Fe, Co or V) supported on highly microporous activated carbon (AC) as well as unloaded AC prepared from waste material were tested. The coupled reaction was carried out at 400 °C for three hours. At the same conditions the process without nitrobenzene was also investigated. The results of catalytic tests revealed that the use of nitrobenzene allows obtaining significantly higher yield of styrene comparing with the reaction in the non-oxidative conditions. In each case, besides styrene also aniline was formed. Carbonaceous deposit was created as a by-product. For this reason, rapid decrease in catalytic activity with the time of reaction was observed. Unloaded activated carbon showed fairly good catalytic properties. Generally, the higher content of active phase supported on AC, the worse the catalytic activity of the system was noticed. It was suggested that the dispersion of metal particles can play an important role in the process. Keywords: Metal catalysts, Activated carbon, Ethylbenzene dehydrogenation, Nitrobenzene hydrogenation, Coupled reaction |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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