Method for producing carbonyl compound

摘要

To provide a production method for suppressing the reduction in production rate of a carbonyl compound due to transferring a noble metal component into liquid phase. A method for producing a carbonyl compound, including: a reaction step of reacting a carbonylation raw material with CO in liquid phase including a solid catalyst having noble metal complex on a resin carrier containing quaternized nitrogen to produce a carbonyl compound; a distillation step of distilling a reaction product liquid to recover gas phase distillate including the carbonyl compound; and a circulation step of circulating a bottom product from the distillation to reaction step. After part of the bottom product contacts with an acidic cation-exchange resin to remove nitrogen compound, liquid having higher moisture concentration than the bottom product contacts with the resin to extract noble metal complex captured by oligomer adsorbing the resin, and the complex is returned to the reaction step.

主权项

1. A method for producing a carbonyl compound, comprising:
a reaction step of reacting a carbonylation raw material with carbon monoxide in a liquid phase including a solid catalyst having a noble metal complex supported on a resin carrier containing quaternized nitrogen to produce a carbonyl compound; a distillation step of distilling a reaction product liquid from the reaction step to recover a gas phase distillate including the carbonyl compound; and a circulation step of circulating a bottom product from the distillation step to the reaction step, wherein, after at least a part of the bottom product is brought into contact with an acidic cation-exchange resin to remove a nitrogen compound included in the bottom product, a liquid having a higher moisture concentration than the bottom product is brought into contact with the acidic cation-exchange resin to extract a noble metal complex captured by an oligomer adsorbed to the acidic cation-exchange resin, and the extracted noble metal complex is returned to the reaction step.