Process for the carbonylation of dimethyl ether
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United States of America Patent
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Nov 22, 2016
Grant Date -
Jan 21, 2016
app pub date -
Mar 6, 2014
filing date -
Mar 8, 2013
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Abstract
Process for preparing methyl acetate by the carbonylation of dimethyl ether with carbon monoxide in the presence of hydrogen and a zeolite catalyst. In a first step, the carbonylation is conducted with a carbon monoxide to hydrogen molar ratio of at least 1 and, in a second and subsequent step, the carbonylation is conducted with a hydrogen to carbon monoxide molar ratio of greater than 1.
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