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A low-temperature three-way catalytic functional filter material and preparation method thereof

A filter material and low-temperature technology, applied in the field of low-temperature three-way catalytic functional filter material and its preparation

Active Publication Date: 2021-09-10
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the reported catalytic filter materials are only for dust and NO x The removal of dust, VOCs and Hg 0 Three-way catalytic filter media with synergistic removal is rarely reported

Method used

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  • A low-temperature three-way catalytic functional filter material and preparation method thereof
  • A low-temperature three-way catalytic functional filter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of the low-temperature three-way catalytic function filter material of the present invention, concrete process is as follows:

[0042] 1. Preparation of catalyst powder

[0043] ① Preparation of carrier

[0044] According to the molar ratio of Mg / Al / Si element is 1:1:2, take appropriate amount of MgO2, pseudo-boehmite, SiO 2 Mixed, stirred and ball milled for 2h to make embryo body. The embryo body was prepared into spherical particles with a diameter of 1 cm through an extrusion molding machine. The particles are dried at 100°C for 6 hours, then fired at 1000°C for 10 hours, and MAS composite functional ceramics can be obtained after cooling.

[0045] ② Preparation of precursor solution

[0046]With (Mn-Sn-Nb-Mo) composite oxide as the active component, firstly weigh the appropriate amount of manganese sulfate and tin tetrachloride according to the molar ratio of Mn / Sn / Nb / Mo element of 1:0.1:0.1:0.1 , niobium oxalate, molybdenum nitrate; wit...

Embodiment 2

[0072] The preparation method of the low-temperature three-way catalytic function filter material of the present invention, concrete process is as follows:

[0073] 1. Preparation of catalyst powder

[0074] ① Preparation of carrier

[0075] According to the molar ratio of Mg / Al / Si element is 1:1:2, take an appropriate amount of MgO 2 , Pseudoboehmite, SiO 2 Mixed, stirred and ball milled for 7h to make embryo body. The embryo body was prepared into spherical particles with a diameter of 1 cm through an extrusion molding machine. The particles are dried at 180°C for 5 hours, and then fired at 1300°C for 6 hours to obtain MAS composite functional ceramics.

[0076] ② Preparation of precursor solution

[0077] First, the molar ratio of Mn / Sn / Nb / Mo in the active component is 1:0.5:0.3:0.6, and the molar ratio of Ce / Fe / Co / Ni in the additive is 1:0.2:0.2:0.3, and weigh an appropriate amount Manganese sulfate, tin nitrate, molybdenum trichloride, and niobium oxalate are used a...

Embodiment 3

[0092] The preparation method of the low-temperature three-way catalytic function filter material of the present invention, concrete process is as follows:

[0093] 1. Preparation of catalyst powder

[0094] ① Preparation of carrier

[0095] According to the molar ratio of Mg / Al / Si element is 1:1:2, take an appropriate amount of MgO 2 , Pseudoboehmite, SiO2 Mixed, stirred and ball milled for 5h to make embryo body. The embryo body was prepared into spherical particles with a diameter of 1 cm through an extrusion molding machine. The particles are dried at 150°C for 5 hours, and then fired at 1200°C for 7 hours to obtain MAS composite functional ceramics.

[0096] ② Preparation of precursor solution

[0097] First, the molar ratio of Mn / Sn / Nb / Mo in the active component is 1:0.4:0.25:0.75, and the molar ratio of Ce / Fe / Co / Ni in the additive is 1:0.2:0.1:0.25, and weigh an appropriate amount The active components of manganese nitrate, molybdenum nitrate, tin nitrate, and niob...

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Abstract

The invention discloses a low-temperature three-effect catalytic functional filter material and a preparation method thereof. The three-effect filter material is composed of a filter material base cloth and a catalytic filter membrane; Any one of PE filter material and glass fiber filter material. The preparation method includes: step 1, preparation of catalyst powder; step 2, preparation of catalytic filter membrane; step 3, pretreatment of filter material base cloth; step 4, preparation of low-temperature three-way catalytic functional filter material. The invention realizes the simultaneous removal of dust, VOCs and Hg in the dust removal 0 , without adding organic waste gas and mercury removal equipment, which greatly reduces the cost of flue gas treatment.

Description

technical field [0001] The invention belongs to the technical field of air pollution control and functional filter material, and in particular relates to a low-temperature three-way catalytic functional filter material and a preparation method thereof. Background technique [0002] With the continuous development of industry, a series of atmospheric environmental problems have appeared correspondingly. Among them, the emission of VOCs is mainly caused by man-made emission sources, most of which are caused by the production process of petrochemical-related industries, product consumption behavior and motor vehicle exhaust. When VOCs exceed a certain concentration, people will feel headache, nausea, vomiting, limb weakness in a short period of time, and in severe cases, they will convulse and coma, resulting in memory loss. VOCs damage the liver, kidneys, brain and nervous system, and even cause blood problems in the human body, causing leukemia and other serious diseases. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/48B01D67/00B01D53/86B01D46/54B01J31/36B01J35/06B01D53/44B01D53/64
CPCB01D46/543B01D53/8665B01D53/8687B01D67/0079B01D71/48B01D2257/602B01D2257/708B01J31/36B01J35/065
Inventor 杨波陈子伦黄琼蔡炜
Owner NANJING UNIV OF INFORMATION SCI & TECH
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