Catalysts for the production of styrene from ethylbenzene: Redox and deactivation study

Overview

Title: 

Catalysts for the production of styrene from ethylbenzene: Redox and deactivation study

Abstract: 

In this work, a pulse plant has been used to study the redox properties, activity and coke generation of four catalysts in ethylbenzene dehydrogenation to produce styrene. CO2 was used as weak oxidant. A physicochemical and structural characterization was carried out in order to verify possible changes in the catalysts after the tests. The experiments consisted of a reduction test with H-2, oxidation with CO2, reaction with ethylbenzene, regeneration with CO2 and coke combustion and reoxidation with O-2. These experiments were carried out at three temperatures (450, 500 and 550 degrees C). With the catalyst that exhibited the best results, MnO2-ZrO2, additional experiments with different oxidation states were carried out in order to determine the influence on its activity and redox properties to assess the feasibility of using CO2 as a regenerating agent during the ethylbenzene dehydrogenation reaction. (C) 2012 Elsevier B. V. All rights reserved.

Authors: 

O. Irún, S.-A. Sadosche, J. Lasobras, J. Soler, E. Francés, J. Herguido, M. Menéndez

DOI: 

Journal: 

Catalysis Today

Year: 

2013

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