Influence of preparation method of hematite catalyst precursors on their catalytic activity in dehydrogenation of ethylbenzene to styrene

• Autorzy: Kuśtrowski P. , Surman J. , Chmielarz L. , Dziembaj R.
• Języki publikacji: EN

Abstrakty

EN

A series of iron oxide based catalysts modified by introduction of chromium Cr, cerium Ce and potassium (KOH or K2CO3) promoters were prepared by coprecipitation method. KOH or K2C03were used as precipitating agents. Calcined catalyst precursors were characterised by XRD (structure) and low temperature Ar-sorption (specific surface area). Activity and selectivity of modified iron oxides were tested in dehydrogenation of ethylbenzene to styrene in fixed-bed microreactor system. Catalytic activity was influenced not only by introduced promoter (Cr, Ce, K) but also by kind of precipitating agent (KOH, K2CO3). The highest styrene yield was observed for iron oxide catalyst modified with cerium and potassium. All studied catalysts showed high selectivity towards styrene (>94%).

Słowa kluczowe

EN

ethylbenzene dehydrogenation; styrene; iron-based catalysts; potassium promoter; BET; XRD

PL

etylobenzen; odwodornienie; styrene; katalizator; żelazo; aktywator potasu

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2000
• Tom: Vol. 2, nr 2
• Strony: 27--30
• Opis fizyczny: Bibliogr. 25 poz., tab., wykr.

Twórcy

autor

Kuśtrowski P.

• Department of Chemical Technology, Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, ul. Ingardena 3, Poland

autor

Surman J.

• Department of Chemical Technology, Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, ul. Ingardena 3, Poland

autor

Chmielarz L.

• Department of Chemical Technology, Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, ul. Ingardena 3, Poland

autor

Dziembaj R.

• Department of Chemical Technology, Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, ul. Ingardena 3, Poland

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