Ethylene heterogeneous hydroformylation and its hydrogenation to n-propanol industrial plant put into production

Recently, the ethylene heterogeneous hydroformylation and its hydrogenation technology to produce n-propanol industrial equipment was successfully put into operation at one time in Ningbo Juhua New Materials Co.

Recently, the ethylene heterogeneous hydroformylation and its hydrogenation technology to produce n-propanol industrial equipment was successfully put into operation at one time in Ningbo Juhua New Materials Co.

The concept of single-atom catalysis was proposed in 2011 by a Chinese scientist and Academician Zhang Tao of the Dalian Institute of Physics .

In the process of homogeneous olefin hydroformylation catalysis, there are problems such as difficulty in separating catalyst from product, loss of precious metals and ligands, failure to effectively utilize a large amount of low-grade reaction heat, and extensive use of solvents.

The research team of Ding Yunjie and Yan Li has been committed to the research of heterogeneous catalysis of hydroformylation for many years, and successfully developed the in-situ generation of homogeneous catalytic active sites on the supported metal nanocrystals through the modification of organic ligands.

The device adopts heterogeneous catalysis technology, which solves the problems of loss of ligands and active metal components that have not been solved in homogeneous catalysis for more than 80 years.

The olefin hydroformylation reaction is a reaction that converts olefins, hydrogen and carbon monoxide into aldehyde compounds.

At present, the industrialized ethylene hydroformylation technology is mainly developed by DP (Davy Power) , Dow Chemical (Dow Chemical) and JM (Johnson Matthey) .

Compared with the existing olefin hydroformylation technology at home and abroad, the heterogeneous olefin hydroformylation technology adopts a new type of catalyst, and the utilization rate of precious metals on the catalyst is close to 100% , that is, all precious metals on the catalyst play a catalytic role, and The loss of catalyst active components can be ignored.
The technology also has better economics, the catalyst and the reaction system do not need to be separated, which greatly reduces the reaction cost ; through the ingenious energy-saving design in the engineering process, a large amount of low-grade heat in the hydroformylation reaction and the hydrogenation reaction can be used.
It is efficiently utilized, and the repetitive utilization rate of reaction heat reaches more than 90% .
In addition, the reaction system adopts a solvent-free green environmental protection process without adding additional solvents, so it is more environmentally friendly.