Process for the cleavage of alkyl tert-alkyl ethers into isoolefins and alkanols over acid catalysts
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United States of America Patent
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Apr 22, 2003
Grant Date -
Jan 24, 2002
app pub date -
Apr 25, 2001
filing date -
Apr 28, 2000
priority date (Note) -
Expired
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Abstract
Alkyl tert-alkyl ethers are cleaved into the corresponding isoolefins and alkanols by a process comprising acid-catalyzed reactive distilling an alkyl tert-alkyl ether fed into the reaction zone of a reactive distillation apparatus as an azeotrope of the alkyl tert-alkyl ether and the corresponding alkanol, wherein the reactive distillation apparatus is configured from bottom to top as a bottom zone, at least one distillation zone and a reaction zone. The process is suitable for the cleavage of primary, secondary and tertiary alkyl tert-alkyl ethers, in particular MTBE.
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