Method for preparing aldehydes or ketones compounds by selective catalytic oxidation of alcohols compounds

Abstract

The invention relates to a method for selectively catalyzing and oxidating the alcohol compounds to prepare the aldehyde or ketone compounds, which comprises the steps that the highly active supported nanometer gold catalysts, water or water and cosolvent and alcohol compounds are put in an autoclave, the oxygen or air is pumped in the autoclave so as to carry out the reaction among the mixtures for 6 to 8 hours on the conditions of a reaction pressure ranging from 0.2 to 1.2MPa and a reaction temperature ranging from 100 to 130 DEG C; then the organic phase is separated and the aldehyde or ketone compounds is obtained. The conversion rate of the alcohol compounds ranges from 80 per cent to 83 per cent and the selectivity of the aldehyde or ketone products reaches 90 per cent to 100 per cent. The invention has the advantages of simple process, low production cost, environmental friendliness, easy separation and cycling use of the catalysts, etc.

Description

technical field

[0001] The invention relates to a method for preparing aldehyde or ketone compounds by selective catalytic oxidation of alcohol compounds. Background technique

[0002] Liquid-phase oxidation of alcohols to aldehydes or ketones is an important and challenging reaction. Traditional oxidation methods mainly use stoichiometric oxidants such as dichromate and permanganate to oxidize alcohol compounds, and this process produces a large amount of heavy metal salt pollutants. In recent years, the green catalytic process using hydrogen peroxide and oxygen as oxidants has attracted people's attention, and the oxidation process using oxygen or air as the oxygen source has attracted much attention due to its high atom economy. In the field of oxygen or air oxidation of alcohol compounds, currently used catalytic systems include homogeneous catalytic reaction systems and heterogeneous catalytic reaction systems. However, most homogeneous catalytic reaction systems need...

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