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A kind of composite catalyst for catalyzing the decomposition of formaldehyde and preparation method thereof

A composite catalyst and formaldehyde decomposition technology, which is applied in the field of composite catalysts that catalyze the decomposition of formaldehyde and its preparation, can solve the problems of difficult catalytic decomposition efficiency, low catalytic efficiency, and few active sites, and achieve low cost, high catalytic activity, The effect of the simple preparation process

Active Publication Date: 2018-10-16
NINGBO TAIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, during the use of the catalyst material, its contact surface with the air directly affects the catalytic decomposition effect of formaldehyde, even if it is loaded on the framework material, it is difficult to greatly improve its catalytic decomposition efficiency; The catalyst material prepared by this method has a tight microstructure, severe agglomeration between particles, few active sites, and generally low catalytic efficiency, which is difficult to apply in actual production and life.

Method used

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  • A kind of composite catalyst for catalyzing the decomposition of formaldehyde and preparation method thereof
  • A kind of composite catalyst for catalyzing the decomposition of formaldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 113.31g of potassium permanganate, 56.37g of manganese sulfate monohydrate, 2.0g of copper nitrate trihydrate, 13.51g of ferric chloride hexahydrate and 2.1g of cerium sulfate tetrahydrate into 200mL of pure water, and stir until fully dispersed and dissolved , Add 12.44g potassium chloride until fully dissolved. The above mixed solution was transferred to a high-pressure reactor, set to react at 150°C for 10 hours, then taken out, washed and filtered, and then dried at 120°C for 25 hours to obtain the product.

[0033] SEM tested (see figure 2 ), indicating that the synthesized ultra-dispersed catalytic formaldehyde decomposition composite catalyst material is a nano-rod material, and the diameter of the nano-rod is about 10nm.

[0034]Take 1.00 g of the above-prepared dispersed catalytic formaldehyde decomposition composite catalyst material and place it on a sand core in a glass tube with a diameter of 2 mm to test its catalytic performance. The air pump is re...

Embodiment 2

[0036] Add 126.48g of potassium permanganate, 95.73g of manganese nitrate hexahydrate, 8.34g of copper sulfate pentahydrate, 6.74g of ferric nitrate nonahydrate and 23.6g of cerium chloride hexahydrate in 200mL of pure water, and stir until fully dispersed and dissolved , Add 13.49g potassium nitrate until fully dissolved. Transfer the above mixed solution to a high-pressure reactor, set it to react at 120°C for 30 hours, take it out, wash and filter it, and then dry it at 180°C for 15 hours to obtain the product.

[0037] The catalytic performance test is the same as in Example 1, and the test results show that the composite catalyst material prepared in this example has an efficiency of 98% at room temperature for catalytically decomposing 1000 ppm of formaldehyde once.

Embodiment 3

[0039] Add 118.26g of potassium permanganate, 56.37g of manganese sulfate monohydrate, 28.43g of copper chloride dihydrate, 0.88g of ferric sulfate heptahydrate and 18.1g of cerium nitrate hexahydrate in 200mL of pure water, and stir until fully dispersed and dissolved , Add 11.62g of potassium sulfate until fully dissolved. The above mixed solution was transferred to a high-pressure reactor, set to react at 200°C for 1 hour, then taken out, washed and filtered, and then dried at 110°C for 30 hours to obtain the product.

[0040] The catalytic performance test is the same as in Example 1. The test results show that the efficiency of the composite catalyst material prepared in this example to catalyze and decompose 1000 ppm of formaldehyde once at room temperature is 98.2%.

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Abstract

A composite catalyst for catalyzing formaldehyde decomposition and a preparation method thereof are disclosed. The preparation method comprises the following steps: successively dissolving permanganate, MnII salt, CuII salt, FeIII salt and CeIII salt in a solvent to obtain a primary mixed liquor, adding a proper amount of an auxiliary agent to obtain a secondary mixed liquor, letting the secondary mixed liquor react at high temperature and at high pressure, cleaning, filtering, and drying. The composite catalyst for catalyzing formaldehyde decomposition is nano-scale rodlike, and diameter is 10 nm. The preparation process of the composite catalyst is simple; and cost is low. The prepared composite catalyst has advantages of full doping of materials and high catalytic decomposition efficacy, and can spontaneously catalyze formaldehyde decomposition under the condition of room temperature.

Description

technical field [0001] The invention relates to a catalyst, in particular to a composite catalyst for catalyzing the decomposition of formaldehyde and a preparation method thereof. Background technique [0002] With the improvement of people's requirements for the quality of life, the decoration and layout of the indoor environment have gradually received attention. In the process of decorating and arranging the indoor environment, one of the main pollutants produced is formaldehyde (HCHO). The main sources of formaldehyde are the binders in decorative and furniture wood-based panels, other various decorative materials containing formaldehyde, such as white latex, foam plastics, paints and coatings, and formaldehyde additives in interior decorative textiles. Caused the formaldehyde content in the indoor air to seriously exceed the national standard. Formaldehyde is a highly toxic substance. Inhalation of high concentrations of formaldehyde can induce bronchial asthma, seve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01D53/86
CPCB01D53/8668B01J23/002B01J23/8892B01J2523/00B01J2523/3712B01J2523/72B01J2523/842B01J2523/17
Inventor 黄建国肖鸽王伟
Owner NINGBO TAIAN NEW MATERIAL TECH CO LTD
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