Copper catalyst for preparation of acetone from isopropanol through gas phase photocatalytic oxidation and reaction process

Abstract

The invention relates to a copper catalyst for preparation of acetone from isopropanol through gas phase photocatalytic oxidation and a reaction process and provides a preparation method of titanium dioxide loaded copper-based compound photocatalyst as well as a process for preparing acetone through photocatalytic oxidation of a part of isopropanol under a gas phase condition. With titanium dioxide as a carrier (containing anatase or a mixed phase of anatase and a little rutile), soluble copper salt as a precursor of copper species (metal copper, copper oxide and cuprous oxide) and sodium borohydride as a reducing agent, the titanium dioxide loaded nanocopper compound catalyst is prepared. The catalyst can oxidize a part of isopropanol in atmosphere containing oxygen for preparation of acetone. The prepared catalyst has the characteristics of good stability, high conversion rate and high principal product selectivity.

Description

technical field [0001] The invention relates to the preparation and application of a photocatalyst, which belongs to the fields of energy chemical industry and fine chemical industry, and is mainly suitable for the reaction of gas-phase photocatalytic partial oxidation of isopropanol to acetone at low temperature, and provides a preparation method of the catalyst and catalytic reaction conditions. Background technique [0002] Acetone, also known as dimethyl ketone, is the simplest saturated ketone. It is mainly used as a solvent in industries such as explosives, plastics, rubber, fiber, leather, oil, and spray paint. It can also be used as a synthetic ketene, acetic anhydride , iodoform, polyisoprene rubber, methyl methacrylate, chloroform, epoxy resin and other important raw materials. The industrial production of acetone is mainly based on the cumene method. The production of acetone from ethanol generally requires zinc chromate as a catalyst, and the reaction temperatur...

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Problems solved by technology

However, the prepared catalyst is unstable and has poor reproducibility

[Molnar, A et al. Jouranl of molecular Catalysis.1991,64(1),41-51], the catalysts such as AMoOx (A=Ba, Sr) prepared by Jun Kubo et al. have the highest conversion rate of isopropanol up to 99%, the selectivity of acetone can also reach 98%, but the temperature required for the experiment is high, which will cause great damage to the equipment

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