Preparation method and use method of heterogeneous oxidation catalyst

Abstract

The invention discloses a preparation method and a use method of a heterogeneous oxidation catalyst, belonging to the field of catalyst preparation in a chemical technology. The heterogeneous oxidation catalyst is characterized in that a high molecular polymer processed by chemical medicine and containing a nitrile group (-CN) is used to fix at least one transition metal ion so as to form a stable metal complex, that is a catalytic activity center. Compared with the prior catalytic technology, the invention has the advantages that the application range is wider, thereby being suitable for oxidative degradation of various pollutants in water and air; the warming and pressure run cost can be saved; the catalyst can be recovered and reused; the stability of the catalyst is hardly influenced by the pH value, and the catalyst can be used under the condition with the pH value of 2-11 and can reduce the erosion to equipment when being used under a neutrality or alkaline condition; the occupation area is little, and the related fee can be reduced; the operation is simple, and only 1-2 workers are needed for the whole catalytic treatment flows; the secondary pollution of the catalyst to the environment is avoided, thus the environment is effectively protected.

Description

1. Technical field [0001] The invention belongs to the field of catalyst preparation in chemical technology, and in particular relates to a method for preparing and using a heterogeneous oxidation catalyst. 2. Background technology [0002] With the rapid development of China's economy and the development trend of economic globalization, the increase of industrial pollution has become an urgent problem to be solved. [0003] At present, the treatment of industrial wastewater is mostly solved by high temperature, high pressure, wastewater biochemical method, homogeneous catalytic oxidation method and other technologies, and there are problems such as high cost, low efficiency and secondary pollution. Taking the wastewater biochemical method as an example, its treatment efficiency is lower than that of chemical methods, and the activity of microorganisms is affected by temperature and the toxicity of pollutants. Although the efficiency of the homogeneous catalytic oxidation m...

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Problems solved by technology

The traditional Fenton reaction uses a homogeneous oxidation catalyst, which is only suitable for application in acidic environments (for example, pH ≤ 4), which will cause corrosion of equipment, and the solubility of transition metal ions will also decrease with the increase of pH value, thereby reducing Catalytic efficiency, and the used homogeneous oxidation catalyst is difficult to be recovered and reused, which will cause secondary pollution to the environment

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