Catalyst composition for reaction of hydroformylation of propene,

Abstract

The invention relates to a catalyst combination used for propylene hydrogen formylation reaction, comprising the components: rhodium, bis-phosphite and single-phosphite. The effects that the activation of Rh / phosphite catalyst is kept and the normal / isomeric ratio of outcome butyraldehyde is suitably adjusted are achieved by adding single-phosphite or bis-phosphite in the propylene hydrogen formylation reaction system catalyzed by the phosphite / Rh; furthermore, highe normal / isomeric ratio and reaction rate are still remained on the basis that the dosage of bis-phosphite is reduced and sub-pressure CO: H2 is more than 1.

Description

Catalyst composition for propylene hydroformylation reaction technical field The invention belongs to the technical field of chemical industry, and in particular relates to a catalyst. Background technique Olefin hydroformylation can conveniently and effectively convert cheap and easy-to-obtain basic chemical raw materials such as propylene into many important chemical products such as butyraldehyde, and is the largest homogeneous catalytic process so far (J.Coord. Chem.Rev.1999, 190-192, 883-900), the reaction generates aldehydes by catalyzing the reaction of hydrogen, carbon monoxide and olefins. In the past few decades, the development of catalysts has undergone several replacement processes. In the catalytic system used, the choice of catalyst metal components is still cobalt and rhodium. Although rhodium is 2500 times more expensive than cobalt, the catalytic activity of rhodium agent is 102 to 103 orders of magnitude higher than that of cobalt, and it can be effecti...

AI Technical Summary

Problems solved by technology

The technical problem to be solved by the present invention is to provide a propylene hydroformylation catalyst composition and reaction method to overcome the defects of poor activity, poor selectivity, poor stability, poor economy and poor positive-to-difference ratio of existing catalyst compositions

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