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The catalytic dehydration of methyl α-hydroxyisobutyrate over various zeolites in a flow reactor is described. Both NaY and NaX are effective catalysts for the selective conversion of MOB to methyl methacrylate. Modification with K + and Cs + enhances the activity and selectivity of NaY but renders NaX a less effective catalyst. Acidic zeolites (HY, Beta, GdNaX, SmNaY, fluorinated...
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