Catalytic dehydrogenation of 4-ethylpyridine
A study is made of the dehydrogenation of 4-ethylpyridine over a mixed oxide catalyst, at atmospheric pressure, using dilution with steam, carbon dioxide, and nitrogen. Maximum yields of 4-vinylpyridine are obtained when the dehydrogenation is carried out at 620° C, feed rate 500 ml/l catalyst/hr, and CO2 dilution of the 4-ethylpyridine at a mass ratio of 1∶2–1∶3.