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Coking deactivation and regeneration of Cs2O–P2O5/SiO2 for aziridine synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
49962 46775 2012 4 PDF Available
Title
Coking deactivation and regeneration of Cs2O–P2O5/SiO2 for aziridine synthesis
Abstract

To improve the catalytic performance of Cs2O–P2O5/SiO2 used for aziridine synthesis, deactivation behavior of the catalysts were investigated by nitrogen adsorption, transmission electron microscope, X-ray diffraction, Fourier transformed infrared spectroscopy and temperature-gravity. These results revealed that coking was a main element responsible for deactivation of the catalyst. Some coke deposits were found in the pores of the deactivated catalyst, carbon and nitrogen containing components were identified as nature of the coke. Based on the above analysis, the deactivated catalyst was activated by on-line coke combustion under a stream of air,it was found that catalytic activity of the deactivated catalyst could be restored and the regenerated catalyst was employed for the reaction in 100 h without obvious deactivation. Thus a promising regeneration method for the deactivated catalyst was established.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Deactivation of Cs2O–P2O5/SiO2 used for aziridine synthesis was caused by coking ► Carbon and nitrogen containing components were identified as nature of the cokes ► Catalytic activity of deactivated catalyst could be restored by on-line activation ► The regenerated catalyst was performed for 100 h without obvious deactivation. ► A feasible on-line catalyst regeneration method is established

Keywords
Aziridine; Deactivation behavior; Coking; Regeneration; Cs2O–P2O5/SiO2
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Coking deactivation and regeneration of Cs2O–P2O5/SiO2 for aziridine synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 27, 5 October 2012, Pages 26–29
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us