still for framstellning of methyl acrylate or a mixture of methyl acrylate and acrylic acid by omsettning of acrolein, methanol and oxygen in nervaro of a catalyst in a fluidized asked

摘要

Methyl acrylate or a mixture of methyl acrylate with acrylic acid are prepared by passing through a fluidized bed of catalyst a gaseous mixture comprising acrolein, methanol and oxygen fed at the bottom of the catalytic bed. A further amount of methanol is fed at one intermediate point at least, between the top and bottom of the catalytic bed. The catalyst is defined by one of the general formulae: