| abstract |
The invention provides a nano-copper-manganese catalyst, a preparation method and a method for preparing 4-dimethylaminopyridine. The nano-copper-manganese catalyst adopts carbon nanofibers of 200-600 nm as a carrier, and supports copper nitrate and manganese nitrate as composite active components , obtained after roasting and ball milling. The application of the nano-copper-manganese catalyst of the invention to the preparation of 4-dimethylaminopyridine by methylation of 4-aminopyridine in a loop reactor can effectively cause a local high-efficiency gas-liquid mass transfer rate, and the reaction process can realize continuous operation, automatic control, and operation. Simple, it is a green and environmentally friendly process suitable for industrial production. |