The effect of addition of a third component on the behaviour of the lithium doped magnesium catalysts for the oxidative dehydrogenation of ethane

H.M. Swaan, A. Toebes, K. Seshan, J.G. van Ommen, J.R.H. Ross

Research output: Contribution to journalArticleAcademicpeer-review

45 Citations (Scopus)
157 Downloads (Pure)

Abstract

The oxidative dehydrogenation of ethane was studied with the use of promoted Li/MgO catalysts at temperatures of 600¿650°C. The addition of known promoters, cobalt and tin, gave a slight Increase In activity but a strong decrease in selectivity to ethylene under the conditions used. The addition of sodium improved the selectivity to ethylene and suppressed the formation of carbon monoxide. Using a feed of 12 vol% ethane and 6 vol% oxygen, the U/Na/MgO catalyst with 3.2wt% sodium showed a selectivity of 86 % to ethylene at 38 % conversion of ethane; the Li/MgO catalyst showed a selectivity of 80 % at similar conversions Thermal Investigations of the Li/Na/MgO catalyst showed that an eutectic melt of LINaCO3 is formed at 490°C; the existence of this molten phase is probably the cause of the Increased selectivity.
Original languageEnglish
Pages (from-to)629-634
Number of pages6
JournalCatalysis today
Volume13
Issue number4
DOIs
Publication statusPublished - 1992

Fingerprint

Dive into the research topics of 'The effect of addition of a third component on the behaviour of the lithium doped magnesium catalysts for the oxidative dehydrogenation of ethane'. Together they form a unique fingerprint.

Cite this