![](/jspui/image/default/superior_home.png)
Please use this identifier to cite or link to this item:
http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/1565
Title: | Experimental study of the deactivation of Ni/AlMCM-41 catalyst in the direct conversion of ethene to propene |
Authors: | Alvarado Perea, Leo Wolff, Tanya Hamel, Christof Seidel-Morgenstern, Andreas |
Issue Date: | 31-Dec-2016 |
Publisher: | Elsevier |
Abstract: | In this work, an experimental study of the deactivation and regarding a possible regeneration procedure in the ETP-reaction using Ni/AlMCM-41 (Si/Al = 60) was carried out. ETP experiments at different temperatures and long time on-stream were carried out. Characterization of the catalyst after experiments was performed using powder-XRD, N2-physisorption, NH3-TPD, TPO and TEM. At 250 and 350 ◦C the catalyst did not suffer significant deactivation after 107 h on-stream. Nevertheless, the yield of propene was low. A severe deactivation of the catalyst was observed at 450 ◦C where propene was the main reaction product. Regeneration of the catalyst after 30 h on-stream at temperatures lower than 350 ◦C could be performed using a mixture of 5 vol.% oxygen in N2. The regeneration of the catalyst was not possible after 30 h on-stream at 450 ◦C. Filamentous carbon and Ni reduction are considered responsible of the deactivation of the catalyst at 450 ◦C. The analysis of the obtained results suggests that a conjunct polymerization process takes place and is the precursor of the reaction products and the carbon species. However, a detailed study of the mechanism of the ETP-reaction should be done for a better understanding of the deactivation of Ni/AlMCM-41. |
URI: | http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/1565 |
ISSN: | 0926-860X |
Other Identifiers: | info:eu-repo/semantics/publishedVersion |
Appears in Collections: | *Documentos Académicos*-- M. en Ciencias de la Ing. |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2017-Articulo-LAP.pdf | Deactivation of Ni catalysts in the ETP reaction | 143,67 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License