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Non-precious metal vocs catalyst and preparation method thereof

A non-precious metal and catalyst technology, applied in the field of non-precious metal VOCs catalyst and its preparation, can solve the problems of poor low temperature reducibility and the like

Active Publication Date: 2021-09-14
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The main purpose of the present invention is to provide non-noble metal VOCs catalyst and preparation method thereof, to solve the problem of poor low-temperature reducibility of VOCs catalyst in the prior art

Method used

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  • Non-precious metal vocs catalyst and preparation method thereof
  • Non-precious metal vocs catalyst and preparation method thereof
  • Non-precious metal vocs catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Preparation of A solution: dissolve 6.32g potassium permanganate and 48g sodium hydroxide in 100ml distilled water; (2) Preparation of B solution: dissolve 7.56g manganese chloride in 100ml distilled water; (3) Preparation of C solution : 4.275g cupric chloride is dissolved in 100ml distilled water; (4) solution B is slowly added in the solution A, mixes with stirring simultaneously, treats that the mixed solution temperature of both is down to room temperature again and then adds solution C and mixes with stirring; (5) The mixed solution obtained in the step (4) was magnetically stirred at a constant temperature for 30 minutes and left to stand at room temperature for 24 hours to obtain a mixed suspension; (6) adding hydrochloric acid to adjust the pH of the mixed suspension in the step (5) to 4; (7) place the mixed suspension in step (6) in an autoclave for hydrothermal treatment at 210°C for 48h, and the temperature rise rate of the autoclave is 10°C / min; (8) mix the ...

Embodiment 2

[0074]Preparation of A solution: 6.32g potassium permanganate and 48g sodium hydroxide were dissolved in 100ml distilled water; (2) Preparation of B solution: 15.06g manganese nitrate was dissolved in 100ml distilled water; (3) Preparation of C solution: 6.05g of copper nitrate was dissolved in 100ml of distilled water; (4) solution B was slowly added to solution A, while stirring with stirring, and after the temperature of the mixture of the two was down to room temperature, solution C was added and stirred; (5 ) The mixed solution obtained in the step (4) was magnetically stirred at a constant temperature for 30 minutes and left to stand at room temperature for 12 hours; (6) adding nitric acid to adjust the pH of the mixed solution in the step (5) to 3 to obtain a mixed suspension; (7) The mixed suspension in step (6) is placed in an autoclave for hydrothermal treatment at 180°C for 32h, and the temperature rise rate of the autoclave is 10°C / min; (8) the mixed suspension in s...

Embodiment 3

[0076] (1) Preparation of A solution: dissolve 6.32g potassium permanganate and 48g sodium hydroxide in 100ml distilled water; (2) Preparation of B solution: dissolve 13.38g manganese sulfate in 100ml distilled water; (3) C solution Preparation: Dissolve 6.25g of copper sulfate in 100ml of distilled water; (4) Slowly add solution B to solution A and stir at the same time. After the temperature of the mixture of the two drops to room temperature, add solution C and stir. (5) the mixed solution obtained in the step (4) was magnetically stirred at a constant temperature for 30min and left to stand at room temperature for 6h to mix the suspension; (6) adding hydrochloric acid to regulate the pH of the mixed suspension in the step (5) to 5 (7) placing the mixed solution in step (6) in an autoclave for hydrothermal treatment at 160° C. for 24 hours, and the heating rate of the autoclave is 10° C. / min; (8) filtering the mixed solution in step (7), After washing with distilled water s...

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Abstract

The invention discloses a non-noble metal VOCs catalyst. The non-noble metal VOCs catalyst comprises a crystal phase structure composed of a manganese oxide crystal phase or a crystal phase structure composed of a manganese oxide crystal phase and a copper-manganese composite oxide crystal phase, and has a nanofibrous surface morphology. In addition, the invention also discloses a preparation method for preparing the non-noble metal VOCs catalyst. The non-precious metal VOCs catalyst prepared by the present invention can exhibit excellent low-temperature reducibility. In the actual use process, the complete conversion temperature of the catalyst is lower, the operating space velocity is higher, the loading amount of the catalyst is less, and the system resistance is smaller. , greatly improving the economical practicability of the catalyst. The invention is applied in the technical field of chemical catalysis, and is especially suitable for catalytic oxidation of volatile organic gases.

Description

technical field [0001] The invention relates to the technical field of industrial catalysis, in particular to a non-noble metal VOCs catalyst and a preparation method thereof. Background technique [0002] Since the reform and opening up, China's economy has developed rapidly, and the urbanization process has been rapid and high-level, and the atmospheric environmental problems brought about by it have become more and more serious. VOCs are considered to be the main cause of compound air pollution, which will cause photochemical smog, ozone depletion, smog and other problems, seriously threatening the survival and development of human beings. Therefore, controlling the emission of VOCs and controlling VOCs pollution has become an urgent task to solve the problem of air pollution. [0003] There are many kinds of VOCs treatment technologies. Compared with other existing VOCs removal technologies, catalytic combustion technology has the advantages of low ignition temperature,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34B01J23/889F23G7/07
CPCB01J23/34B01J23/8892F23G7/07F23G2209/14
Inventor 程琰罗萌萌
Owner SOUTHWEST JIAOTONG UNIV