abstract |
The present invention relates to a method for the production of N-vinyl-2-pyrrolidone by gas-phase reaction at atmospheric pressure. The method is characterized in that a gas-phase reaction is conducted by using N- beta -Hydroxyethyl-2-Pyrrolidones serving as raw materials, at a temperature of 300 DEG -450 DEG C., a space velocity of 500-4500 hr-1 in the presence of a mixed oxide of group IV elements, or an oxide of group IV elements, which has been modified by group I or group II elements. |