A catalyst for the preparation of benzaldehyde by oxygen oxidation of benzyl alcohol under solvent-free conditions, its preparation method and application

Abstract

This invention discloses a catalyst for the oxidation of benzyl alcohol to benzaldehyde under solvent-free conditions, its preparation method, and its application. The steps of this invention are as follows: 1. Dissolve Fe(NO)3·9H2O, Co(OAc)2, Ni(OAc)2·4H2O, Cr(OAc)3, and Mn(OAc)2·4H2O in deionized water, stir thoroughly, add a certain amount of Ce(OAc)3 and a surfactant, and stir at 60°C for 12 hours; 2. Add ammonia water, continue stirring for 12 hours, collect the solid product, and dry it in an oven; 3. Place the solid in a muffle furnace and calcine it at a certain temperature for a certain time to obtain the catalyst. This invention uses non-precious metals as precursors to prepare a composite metal oxide catalyst through co-precipitation and high-temperature calcination. The preparation method disclosed in this patent is simple and low-cost. Furthermore, the obtained catalyst exhibits excellent catalytic activity when applied to the oxidation of benzyl alcohol to benzaldehyde under solvent-free conditions. The catalyst can be recycled after centrifugation, washing, drying, and regeneration, demonstrating good potential for industrial application.

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