Process for the preparation of vinylpyridine from picoline over modified zeolites

摘要

The present invention relates to an improved eco-friendly process for the preparation of vinylpyridine from corresponding picoline over modified zeolite catalyst in vapour phase which comprises reacting picoline with formaldehyde with a molar ratio of formaldehyde to picoline in the range of 1:1 to 4:1, at a temperature ranging between 200° C. to 450° C., at a weight hourly in the range of 0.25 hr<-1>-1.00 hr<-1 >over a modified commercial zeotlite catalyst to obtain a high yield and selectivity of the desired product.