Process for the selective hydrogenation of aromatic acetylene compounds
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United States of America Patent
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Apr 2, 1996
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N/A
app pub date -
Apr 8, 1994
filing date -
Oct 10, 1991
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Expired
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Abstract
A process for the selective hydrogenation of aromatic acetylene compounds present as impurities in vinyl-aromatic compounds without substantial loss of vinyl-aromatic compound comprises adding hydrogen and an inert gas to a liquid phase vinyl-aromatic compound containing aromatic acetylene compounds and contacting the aromatic acetylene compound with hydrogen in the presence of a selective hydrogenation catalyst, wherein the partial hydrogen pressure is from about 0.001 to about 0.05 bar.
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