Download : Download high-res image (144KB)Download : Download full-size image. Working off-campus? ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Oxidative dehydrogenation of ethylbenzene to styrene over carbonaceous catalysts. 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. and you may need to create a new Wiley Online Library account. Styrene Production from Ethylbenzene Objective: • A “Mini-plant” which represents the main parts of the entire in-dustrial process, including recycle streams, has to be operated: • isothermally operated reactor for dehydrogenation of ethylbenzene to styrene (catalyst bed … 1a). Number of times cited according to CrossRef: Catalytic conversions of CO2 to help mitigate climate change: Recent process developments. Styrene has been produced by ethylbenzene dehydrogenation over iron oxide catalyst with a large excess of superheated steam. Together with the characterization results of XRD, TGA, and DR UV–Vis spectroscopy, the deep reduction of V5+ into V3+ during CO2‐ODEB is the main reason for the deactivation of the supported vanadia catalyst, while the coke deposition has a less important impact on the catalyst stability. Process Safety and Environmental Protection. Catalytic performance of Al‐MCM‐41‐supported vanadia catalysts (V/Al‐MCM‐41) with different V loading was investigated for oxidative dehydrogenation of ethylbenzene to styrene (ST) with CO 2 (CO 2 ‐ODEB).
The superior catalytic performance of the present V/Al‐MCM‐41 catalyst can be attributed to the Al‐MCM‐41 support being more favorable for the high dispersion of V species and the stabilization of active V5+ species. The inlet molar flow rate of Ethylbenzene is 13.5 lbmol/hr. Oxidative dehydrogenation of ethylbenzene to styrene over the CoFe 2 O 4 –MCM-41 catalyst: preferential adsorption on the O 2− Fe 3+ O 2− sites located at octahedral positions M. da Costa Borges Soares, F. F. Barbosa, M. A. M. Torres, A. Valentini, A. dos Reis Albuquerque, J. R. Sambrano, S. B. C. Pergher, N. Essayem and T. P. Braga, Catal.
► MnO2–ZrO2 catalyst exhibited the best performance and stability. Highlights Pulse plant has been designed to carry out transient experiments of four catalysts. Copyright © 2020 Elsevier B.V. or its licensors or contributors. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Catalysts for the production of styrene from ethylbenzene: Redox and deactivation study. CO2 was used as weak oxidant.
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