A kind of catalyst containing cu(i) and method for catalyzing furfural hydrogenation therewith

Abstract

The invention relates to a non-noble metal catalyst and application thereof in catalysis of high-selectivity furfural hydrogenation to synthesize 1,2-pentanediol. Copper (I or II) salts and copper (I) oxides, nickel (II) salts and aluminum (III) salts and / or oxides thereof are taken as raw materials, glucose or sodium sulfite or sodium thiosulfate is taken as a reducing agent, the raw materials and the reducing agent are subjected to a co-precipitation reaction with sodium hydroxide and sodium carbonate, and precipitates are roasted to obtain the Cu (I)-Ni (II)-Al (III) ternary inorganic composite catalyst. The invention further discloses a method for synthesizing 1,2-pentanediol by selectively catalyzing furfural hydrogenation and reduction through the ternary composite catalyst. The catalyst is a non-noble metal inorganic compound and is low in raw material cost, simple in preparation process and low in cost; the raw material for synthesizing 1,2-pentanediol is furfural which comes from wood fiber waste materials, belongs to a natural product derivative and is low in cost, easy to obtain, sustainable and beneficial for high-added-value development and utilization of a large amount of waste wood fiber; the obtained product is high in selectivity and easy to separate and purify.

Description

technical field [0001] The invention relates to a catalyst containing Cu(I) and a method for catalyzing the hydrogenation of furfural by using it, which is a Cu(I)-Ni(II)-Al(III) catalyst and using it to catalyze the hydrogenation of furfural to synthesize 1,2 -The method of pentanediol belongs to the field of catalyst preparation and heterogeneous catalysis organic compound synthesis reaction. Background technique [0002] 1,2-Pentanediol is an important intermediate in the synthesis of propiconazole (Propiconazole) fungicides, mainly used to construct the ketal structure in the molecule 1 . Propiconazole has the advantages of high efficiency, low toxicity and wide active spectrum. It was originally developed by the Belgian Janssen Pharmaceutical Group 2 It has been developed and has been registered in many countries and regions. It is one of the varieties with the largest sales volume at present. The polyhydroxy building block in 1,2-pentanediol has the ability to form ...

AI Technical Summary

Problems solved by technology

The high price of sodium borohydride and the difficulty of obtaining hydroxy-n-valeric acid make it difficult to realize industrial production of this process

[0007] To sum up, it has been seen that the routes reported in the literature to synthesize 1,2-pentanediol by epoxidation of n-pentene and ring-opening reaction of epoxides are dependent on expensive imported raw materials for n-pentene, low boiling point and volatilization of raw materials. strong, the process produces a lot of liquid waste, product separation and post-processing difficulties and other deficiencies; the route to synthesize 1,2-pentanediol with furfuryl alcohol or furfural hydrogenation reduction reaction that has been reported in the literature has solved the source of raw materials However, there are still deficiencies such as high price of noble metal catalysts, low conversion rate of raw materials, poor product selectivity and low product purity; other methods reported may have expensive raw materials, or insufficient sources of raw materials, or use severe Toxic chemicals, or long routes, or difficult reactions, or difficult product purification, etc.

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