Method of hydrodechlorinating nuclear-chlorinated ortho-xylenes
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United States of America Patent
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Aug 29, 2006
Grant Date -
Mar 18, 2004
app pub date -
Sep 10, 2003
filing date -
Sep 12, 2002
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Expired
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Abstract
Method of hydrodechlorinating nuclear-chlorinated o-xylenes and recovering o-xylene, forming hydrogen chloride, the nuclear-chlorinated o-xylenes being hydrogenated in the gas phase at a noble-metal-containing catalyst at a temperature in the range from 220 to 360.degree. C. The catalyst preferably comprises palladium or platinum, in particular supported palladium or platinum. The nuclear-chlorinated o-xylenes can be used individually or as mixtures.
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