Partial oxidation of α-olefins over iron antimony oxide catalysts

 

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dc.contributor.advisor Van Steen, Eric en_ZA
dc.contributor.author Schnobel, Michael en_ZA
dc.date.accessioned 2016-11-07T17:52:49Z
dc.date.available 2016-11-07T17:52:49Z
dc.date.issued 1997 en_ZA
dc.identifier.citation Schnobel, M. 1997. Partial oxidation of α-olefins over iron antimony oxide catalysts. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/22449
dc.description Bibliography: p. 179-188. en_ZA
dc.description.abstract Iron antimony oxide has been known to be an active and selective catalyst for the partial oxidation of propene to acrolein and the oxidative dehydrogenation of 1-butene to 1,3- butadiene. It has become the preferred catalyst for the industrial acrolein formation from propene. The main purpose of this work was to investigate the influence of catalyst parameters such as calcination temperature, Sb:Fe ratio, type of pre-treatment, absence or presence of gaseous oxygen on the activity and selectivity in the partial oxidation of propene. Furthermore the influence of the reaction parameters temperature, space time, partial pressure, time on stream and the carbon chain length of the olefin have been studied in partial oxidation reactions using a fixed bed U-tube glass reactor. Various models have been tested for the rate of formation of products in the range of C₂ to C₆ α-olefins. Increasing the calcination temperature from 500°C to 900°C resulted in an increase of the crystallite diameter and a simultaneous decrease of the surface area which might be ascribed to high temperature sintering of the catalyst. The activity decreased proportional to the decrease of surface area. At the same time the selectivity to acrolein increased with increasing calcination temperature. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Chemical Engineering en_ZA
dc.subject.other Catalysis Research en_ZA
dc.title Partial oxidation of α-olefins over iron antimony oxide catalysts en_ZA
dc.type Doctoral Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Centre for Catalysis Research en_ZA
dc.type.qualificationlevel Doctoral
dc.type.qualificationname PhD en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Schnobel, M. (1997). <i>Partial oxidation of α-olefins over iron antimony oxide catalysts</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Catalysis Research. Retrieved from http://hdl.handle.net/11427/22449 en_ZA
dc.identifier.chicagocitation Schnobel, Michael. <i>"Partial oxidation of α-olefins over iron antimony oxide catalysts."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Catalysis Research, 1997. http://hdl.handle.net/11427/22449 en_ZA
dc.identifier.vancouvercitation Schnobel M. Partial oxidation of α-olefins over iron antimony oxide catalysts. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Catalysis Research, 1997 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/22449 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Schnobel, Michael AB - Iron antimony oxide has been known to be an active and selective catalyst for the partial oxidation of propene to acrolein and the oxidative dehydrogenation of 1-butene to 1,3- butadiene. It has become the preferred catalyst for the industrial acrolein formation from propene. The main purpose of this work was to investigate the influence of catalyst parameters such as calcination temperature, Sb:Fe ratio, type of pre-treatment, absence or presence of gaseous oxygen on the activity and selectivity in the partial oxidation of propene. Furthermore the influence of the reaction parameters temperature, space time, partial pressure, time on stream and the carbon chain length of the olefin have been studied in partial oxidation reactions using a fixed bed U-tube glass reactor. Various models have been tested for the rate of formation of products in the range of C₂ to C₆ α-olefins. Increasing the calcination temperature from 500°C to 900°C resulted in an increase of the crystallite diameter and a simultaneous decrease of the surface area which might be ascribed to high temperature sintering of the catalyst. The activity decreased proportional to the decrease of surface area. At the same time the selectivity to acrolein increased with increasing calcination temperature. DA - 1997 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1997 T1 - Partial oxidation of α-olefins over iron antimony oxide catalysts TI - Partial oxidation of α-olefins over iron antimony oxide catalysts UR - http://hdl.handle.net/11427/22449 ER - en_ZA


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