Process for preparation of 2,3,5-trimethylhydroquinone
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United States of America Patent
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Sep 6, 1988
Grant Date -
N/A
app pub date -
Sep 24, 1987
filing date -
Oct 16, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparation of 2,3,5-trimethylhydroquinone (TMHQ) from 2,3,5-trimethylbenzoquinone (TMBQ) is disclosed, comprising reducing TMBQ with hydrogen in the presence of a platinum group metal catalyst with a silica alumina support containing an alkali metal component. This process permits preparation of TMHQ of purity as high as more than 99%.
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