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

Machocki, A.; Denis, A.

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Tytuł artykułu

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

Autorzy

Machocki A. , Denis A.

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Abstrakty

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

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

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, machocki@hermes.umcs.lublin.pl

Bibliografia

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Bibliografia

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