Catalyst system of hydrogen peroxide for redox cycloethane

Abstract

A copper polyphosphate catalyst used for oxidizing cyclohexane by hydrogen peroxide is disclosed, which features high catalytic activity and no loss of active components in its application.

Description

Technical field [0001] The invention belongs to a new catalyst system for oxidizing cyclohexane by hydrogen peroxide. Background technique [0002] The selective oxidation of cyclohexane to cyclohexanol and cyclohexanone has always been a hotspot in production and research, because its reaction not only has important research significance for the activation of hydrocarbon saturated bonds, but its products are also very important industrial raw materials. The main intermediate for the synthesis of guitolactam, adipic acid and fine chemicals such as pharmaceuticals and coatings. In the traditional process of producing cyclohexanol and cyclohexanone, due to the stability of cyclohexane and the much more active alcohol and ketone than the raw material cyclohexane, the conversion rate of cyclohexane and the selectivity of alcohol and ketone are both low and the process is complicated. The pollution is serious, so it is necessary to continuously improve it. Its commonly used oxidants a...

AI Technical Summary

Problems solved by technology

The conversion of cyclohexane in most of the reaction systems that have been reported is all low (≤20%), and most of the catalysts supported by molecular sieves have the phenomenon of active component loss, which makes the repeatability poor. The highest conversion rate of cyclohexane is the VPO-H of S.D.Endalkachew group (Chem Commun.2142-2143, 2002) 2 o 2 system, the conversion rate can be as high as 91%, but cyclohexane / H 2 o 2 (Molar ratio) ≈ 5, and the catalyst is dissolved in the solution and cannot be recovered by filtration for reuse