These experiments were carried out to find the possibility of use of carbonized chaff as catalyst carrier for the vapour phase synthesis of vinyl acetate from acetylene and acetic acid, catalysed by zinc acetate.
These carbonized chaffs treated with 0.1 N sodium hydroxide, 0.1 N hydrochloric acid, ether and warm water, and a commercial active carbon "Edo-Coal" were compared for their activity by the specific reaction rate, and under the conditions such as reaction temperature : 220 ℃, particle size of catalytic carrier : 20-60 mesh, percentage of zinc acetate to catalytic carrier : 15 %, it was found that the rate of the reaction of the carbonized chaff treated with ether is most preferable and the reactivity is observed to be about one third of "Edo-Coal".