Conversion of ethane on the Na+/CaO catalyst under reaction conditions suitable for oxidative coupling of methane

• Autorzy: Machocki A. , Denis A.
• Języki publikacji: EN

Abstrakty

EN

It was found that under the reaction conditions suitable for oxidative coupling of methane over a half of ethylene formed from the ethane-oxygen feedstock in the presence of Na+/CaO catalyst may derive from thermal transformations of ethane rather than from its oxidative dehydrogenation. The total selectivity of ethane conversion towards all hydrocarbons formed is high and at 1073 K is close to 99%. The selectivity of ethylene formation is about 86 - 88% at 873 K. An increase in the temperature to 923 K causes an approximately 10% decrease in the ethylene selectivity. However, at about 973 K ethylene selectivity returns to the level of 87 - 90% which is sustained until 1073 K. The minimum selectivity of ethylene formation is accompanied by the corresponding maxima in C3+ hydrocarbons and methane selectivities, which suggest that disproportionation of C2 species is favoured at 873 - 973 K.

Słowa kluczowe

EN

ethane; ethylene; Na/CaO catalyst; activity; selectivity; oxidative dehydrogenation; thermal dehydrogenation

PL

etan; etylen; katalizator Na/CaO; aktywność; selektywność; odwodornienie; odwodornienie utleniające

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2006
• Tom: Vol. 8, nr 2
• Strony: 54--58
• Opis fizyczny: Bibliogr. 45 poz., rys.

Twórcy

autor

Machocki A.

autor

Denis A.

• University of Maria Curie-Skłodowska, Faculty of Chemistry, Department of Chemical Technology, Plac Marii Curie-Skłodowskiej 3, 20-031 Lublin,

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