abstract |
A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture containing metachlorine, methanol, and oxygen with a heterogeneous catalyst containing a carrier and a noble metal, the catalyst having an average diameter of at least 200 microns and at least 90% by weight of the noble metal. Is 70% outside the catalyst volume, and the oxygen concentration at the reactor outlet is 0.5-7.5 mol%. [Selection diagram] None |