Process for the preparation of an alkylene carbonate and an alkylene glycol
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United States of America Patent
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Oct 14, 2014
Grant Date -
Dec 13, 2012
app pub date -
Aug 22, 2012
filing date -
May 15, 2008
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Abstract
The invention provides a reaction system for the production of an alkylene carbonate comprising: an epoxidation zone containing an epoxidation catalyst located within an epoxidation reactor; a carboxylation zone containing an bromide-containing carboxylation catalyst located within an alkylene oxide absorber; and one or more purification zones containing a purification absorbent capable of reducing the quantity of bromide-containing impurities in a feed comprising a recycle gas, which purification zones are located upstream from the epoxidation zone; and a process for the production of an alkylene carbonate and an alkylene glycol.
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