Preparation method and application of manganese oxide octahedral molecular sieve catalyst

An octahedral molecular sieve and catalyst technology, applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of harsh technical conditions for photoactivated persulfate and high energy consumption of thermally activated persulfate technology, Achieve good catalytic degradation effect, excellent catalytic effect, good application prospect
CN112264083APending Publication Date: 2021-01-26CHINA THREE GORGES UNIV
1 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA THREE GORGES UNIV
Publication Date
2021-01-26

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a preparation method of a manganese oxide octahedral molecular sieve and application of the manganese oxide octahedral molecular sieve in degradation of organic pollutants. Thecatalyst is prepared by calcining, refluxing, filtering, washing and drying a mixed solution of manganese carbonate, potassium oxalate, concentrated nitric acid and potassium nitrate. The catalyst isused for catalyzing and activating peroxydisulfate to generate sulfate free radicals, hydroxyl free radicals, superoxide free radicals and non-free radical singlet oxygen with strong oxidizing property, so that organic dyes and antibiotics are efficiently oxidized and degraded, and the catalyst can be recycled after reaction. The obtained catalyst can efficiently catalyze and activate hydrogen persulfate for multiple times at room temperature to generate sulfate free radicals, hydroxyl free radicals, superoxide free radicals and non-free-radical singlet oxygen to degrade organic pollutants, can be recycled and repeatedly used after reaction, has no obvious reduction in catalytic performance, can greatly reduce the industrial cost, accords with a green production principle and has a greatprospect in the field of organic wastewater degradation.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the preparation of a manganese oxide octahedral molecular sieve catalyst and its application in degrading organic pollutants, belonging to the technical field of organic wastewater treatment. Background technique

[0002] Manganese oxides are a class of potential heterogeneous catalysts, including MnO, Mn 2 o 3 , MnO 2 and Mn 3 o 4 etc., have been applied in a variety of oxidation–reduction reactions, and manganese oxides are generally considered as an abundant transition metal with low toxicity and low cost. Recent research results have shown that manganese oxides can be used to activate persulfate and hydrogen persulfate to generate strong oxidizing sulfate radicals to oxidize and degrade pollutants in industrial wastewater. However, the preparation process of the existing manganese catalyst is relatively complicated, the catalytic activity is not ideal, the amount of oxidant used is large, and the cost of wastewater tre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More