Catalytic performance of sucrose-derived CMK-3 in oxidative dehydrogenation of propane to propene

doi:10.1016/j.apcata.2012.08.044

Catalytic performance of sucrose-derived CMK-3 in oxidative dehydrogenation of propane to propene

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Catalytic performance of sucrose-derived CMK-3 in oxidative dehydrogenation of propane to propene

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Bibliographic description

punktacja MNiSW [2012 A]: 35

title:	Catalytic performance of sucrose-derived CMK-3 in oxidative dehydrogenation of propane to propene
author:	Michorczyk Piotr, Kuśtrowski Piotr , Janus Paula , Wach Anna
journal title:	Applied Catalysis. A, General
volume:	445-446
date of publication :	2012
pages:	321-328
ISSN:	0926-860X
eISSN:	1873-3875
DOI:	10.1016/j.apcata.2012.08.044
notes:	Na publikacji autorka Janus Paula podpisana jako Niebrzydowska Paula.
language:	English
journal language:	English
abstract in English:	CMK-3 carbon replica was synthesized by carbonization of sucrose introduced to the pore system of a SBA- 15 hard template followed by dissolving SiO 2 with HF. The material with a stable hexagonal structure and an expanded surface area ( S BET = 1287 m 2 /g) was obtained. TG measurements showed that CMK-3 type mesoporous carbon started to be intensively oxidized by molecular O 2 above 723 K. This carbon sample was tested as a catalyst of dehydrogenation of propane to propene under oxidative (O 2 :C 3 H 8 = 0.25, 0.50 and 1.00) and non-oxidative (O 2 :C 3 H 8 = 0.00) conditions in the temperature range from 573 to 873 K. The propene yield increased with rise in the reaction temperature, however above 573 K the formation of side- products (C 2 H 6 , C 2 H 4 , CH 4 and H 2 ) was observed. Moreover, coke was deposited on the catalyst surface. A decrease in the mass of a catalyst bed after the catalytic runs suggested the participation of oxygen in burning of deposited and bulk coke. The surface composition of a spent catalyst was investigated by XPS and TPD analysis. The changes in the concentration of oxygen functional groups, caused by the catalytic reaction, were observed regardless of a reaction temperature and feed composition.
keywords in English:	oxidative dehydrogenation, carbon replica, propene, CMK-3
departmental parameterization:	35
affiliation:	Wydział Chemii : Zakład Technologii Chemicznej
type:	journal article
subtype:	academic paper

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