阅读说明：本技术 一种吸附催化材料及其制备方法 (Adsorption catalysis material and preparation method thereof ) 是由 黄保帅 朱蕾 陈玲 叶伟强 于 2021-09-15 设计创作，主要内容包括：本发明公开了一种吸附催化材料及其制备方法,所述吸附催化材料由基体和活性组分,所述基体为玻璃纤维或陶瓷纤维,所述活性组分为分子筛浸渍负载特定的金属；所述制备方法包括：(1)基体制备：将玻璃纤维或陶瓷纤维浸胶、干燥、瓦楞辊热压、热压纸铺贴与切割,制备成波芯瓦楞型蜂窝载体；(2)浸渍液制备：依次将分子筛、可溶性锰盐与可溶性稀土盐、分散剂、粘结剂与水混合制备成浸渍液；(3)浸渍负载：将瓦楞型蜂窝载体置于浸渍液中浸渍、并对孔道内多余浸渍液吹扫,然后干燥、焙烧后得到蜂窝状吸附催化材料。本发明集吸附与催化于一体、利用两种协同效应,优化脱附再生工艺、降低能耗,提高了对VOC去除净化效率。(The invention discloses an adsorption catalysis material and a preparation method thereof, wherein the adsorption catalysis material comprises a matrix and an active component, the matrix is glass fiber or ceramic fiber, and the active component is a molecular sieve impregnated and loaded with specific metal; the preparation method comprises the following steps: (1) preparing a matrix: gumming glass fiber or ceramic fiber, drying, hot-pressing by a corrugated roller, paving and cutting hot-pressed paper, and preparing the corrugated honeycomb carrier with the corrugated core; (2) preparing an impregnation liquid: mixing a molecular sieve, soluble manganese salt, soluble rare earth salt, a dispersing agent, a binder and water in sequence to prepare a steeping liquor; (3) impregnation and loading: and (3) placing the corrugated honeycomb carrier into an impregnation liquid for impregnation, blowing redundant impregnation liquid in the pore channel, and then drying and roasting to obtain the honeycomb adsorption catalytic material. The invention integrates adsorption and catalysis, utilizes two synergistic effects, optimizes the desorption regeneration process, reduces energy consumption and improves the VOC removal and purification efficiency.)

1. The adsorption catalytic material is characterized by comprising a substrate and an active component, wherein the substrate is glass fiber or ceramic fiber, and the active component is a molecular sieve impregnated with a specific metal.

2. An adsorption catalysis material according to claim 1, wherein said metals are manganese and rare earth elements.

3. The adsorptive catalytic material of claim 2, wherein said rare earth element is one or more of yttrium, lanthanum, neodymium, cerium, europium.

4. A preparation method of an adsorption catalysis material is characterized by comprising the following steps:

(1) preparing a matrix: gumming glass fiber or ceramic fiber, drying, hot-pressing by a corrugated roller, paving and cutting hot-pressed paper, and preparing the corrugated honeycomb carrier with the corrugated core;

(2) preparing an impregnation liquid: mixing a molecular sieve, soluble manganese salt, soluble rare earth salt, a dispersing agent, a binder and water in sequence to prepare a steeping liquor;

(3) impregnation and loading: and (3) placing the corrugated honeycomb carrier into an impregnation liquid for impregnation, blowing redundant impregnation liquid in the pore channel, and then drying and roasting to obtain the honeycomb adsorption catalytic material.

5. The method for preparing the adsorption catalysis material according to the claim 4, wherein the wall thickness of the corrugated honeycomb carrier is 0.1-0.3mm, the corrugation height is 1.6-1.8mm, and the wavelength is 3-3.5 mm.

6. The method of claim 4, wherein the molecular sieve is one or more of ZSM-5, Y or beta.

7. The method for preparing an adsorptive catalytic material according to claim 4, wherein said soluble manganese salt is manganese acetate or manganese nitrate, and said soluble rare earth salt is acetate or nitrate of any one of yttrium, lanthanum, neodymium, cerium and europium.

8. The process for preparing an adsorptive catalytic material according to claim 4 or 7, wherein the molar ratio of manganese to rare earth element is 1.2-1.8: 1, the mass of the manganese and the rare earth elements is 3 to 15 percent of the mass of the molecular sieve.

9. The method for preparing an adsorptive catalytic material according to claim 4, wherein the dispersant is one of ammonium polyacrylate or polyethylene glycol, and the amount of the dispersant is 0.5-2% of the mass of the molecular sieve; the adhesive is one of silica sol and aluminum sol, the concentration is 30-40 wt%, and the dosage is 30-40% of the mass of the molecular sieve.

10. The method as claimed in claim 4, wherein the corrugated honeycomb carrier is dried at 120 ℃ and calcined at 500-550 ℃ after being soaked and purged.

Technical Field

The invention relates to an adsorption catalysis material and a preparation method thereof, belonging to the field of air purification treatment.

Background

The requirements of China on the environmental quality are gradually improved, the urban environmental pollution is aggravated at present, and the environmental management task is harder and harder. Volatile Organic Compounds (VOCs) are toxic pollutants (typically formaldehyde, toluene, for example), which may cause respiratory diseases, nervous system and cancer, etc. in long-term contact with nitrogen oxides, and which may cause photochemical smog and induce the generation of organic pollutant particles of PM2.5 particulate matter.

At present, the treatment methods of VOCs mainly include adsorption method, absorption method, condensation recovery method, biodegradation, combustion method, plasma oxidation method and the like. Aiming at the characteristics of actual VOCs, the method is complex in components, large in air volume, and many in variation factors such as humidity and temperature, and the effect of a single treatment method is limited. The adsorption method can be continuously used after timely desorption treatment is needed when the adsorption material is adsorbed to a certain degree, and the adsorption material needs to be taken out and regenerated or replaced after being saturated, so that time and labor are wasted. When the material is treated by a catalytic method, the VOC is easy to penetrate before being catalytically oxidized if the material has no adsorption property.

Therefore, it is necessary to develop a new technology or a new material. The adsorption and catalysis material can integrate adsorption and catalysis, utilizes two synergistic effects, optimizes the desorption regeneration process, reduces energy consumption and improves the VOC removal and purification efficiency.

Disclosure of Invention

The invention aims to provide an adsorption catalysis material and a preparation method thereof, which integrate adsorption and catalysis, utilize two synergistic effects, optimize a desorption regeneration process, reduce energy consumption and improve the VOC removal and purification efficiency.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

in one aspect, the invention provides an adsorption catalysis material, which comprises a substrate and an active component, wherein the substrate is glass fiber or ceramic fiber, and the active component is a molecular sieve impregnated with a specific metal.

As a further preference of this aspect, the metal is manganese and a rare earth element.

Furthermore, the rare earth element is one or more of yttrium, lanthanum, neodymium, cerium and europium.

In another aspect, the present invention further provides a preparation method of an adsorption catalysis material, wherein the preparation method comprises:

(1) preparing a matrix: gumming glass fiber or ceramic fiber, drying, hot-pressing by a corrugated roller, paving and cutting hot-pressed paper, and preparing the corrugated honeycomb carrier with the corrugated core;

(2) preparing an impregnation liquid: mixing a molecular sieve, soluble manganese salt, soluble rare earth salt, a dispersing agent, a binder and water in sequence to prepare a steeping liquor;

(3) impregnation and loading: and (3) placing the corrugated honeycomb carrier into an impregnation liquid for impregnation, blowing redundant impregnation liquid in the pore channel, and then drying and roasting to obtain the honeycomb adsorption catalytic material.

In a further preferred embodiment of the present invention, the corrugated honeycomb carrier has a wall thickness of 0.1 to 0.3mm, a corrugation height of 1.6 to 1.8mm, and a wavelength of 3 to 3.5 mm.

As a further preference of the scheme, the molecular sieve is one or more of ZSM-5, Y or beta.

In a further preferred embodiment of the present invention, the soluble manganese salt is manganese acetate or manganese nitrate, and the soluble rare earth salt is acetate or nitrate of any one of yttrium, lanthanum, neodymium, cerium and europium.

As a further preference of this embodiment, the molar ratio of manganese to rare earth elements is 1.2 to 1.8: 1, the mass of the manganese and the rare earth elements is 3 to 15 percent of the mass of the molecular sieve.

As a further optimization of the scheme, the dispersant is one of ammonium polyacrylate or polyethylene glycol, and the using amount of the dispersant is 0.5-2% of the mass of the molecular sieve; the adhesive is one of silica sol and aluminum sol, the concentration is 30-40 wt%, and the dosage is 30-40% of the mass of the molecular sieve.

As a further optimization of the scheme, the corrugated honeycomb carrier is dried at 120 ℃ and roasted at 500-550 ℃ after being soaked and blown.

The invention has the beneficial effects that:

the adsorption catalysis material takes corrugated inorganic fiber honeycombs as a carrier, loads a molecular sieve composite manganese-rare earth catalytic active component with high adsorption capacity and strong hydrophobicity, has small channel resistance, large contact area and high utilization rate of the adsorption and catalytic active component, and has good adsorption and catalytic regeneration effects on VOCs. The dynamic adsorption capacity of the adsorption catalysis material to toluene at normal temperature prepared by the method reaches 6.8%, and the conversion rate of toluene at 250 ℃ reaches 98%.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a graph of the performance of the present invention for the adsorption of p-toluene;

FIG. 2 is a graph of the conversion of p-toluene at various temperatures according to the present invention.

Detailed Description

The present invention will be described in detail with reference to specific examples.

The first embodiment.

An adsorption catalysis material, the preparation method comprises the following steps:

(1) preparing a matrix: the corrugated honeycomb carrier with the corrugated core is prepared by gumming glass fiber or ceramic fiber, drying, hot-pressing by a corrugated roller, paving and cutting hot-pressed paper, and the wall thickness of the corrugated honeycomb carrier is 0.1-0.3mm, the corrugation height is 1.6-1.8mm, and the wavelength is 3-3.5 mm.

(2) Preparing an impregnation liquid: mixing a molecular sieve, soluble manganese salt, soluble rare earth salt, a dispersing agent, a binder and water in sequence; wherein the molar ratio of manganese to rare earth elements is 1.2-1.8: 1, the mass of manganese and rare earth elements accounts for 3-15% of the mass of the molecular sieve; the molecular sieve is one or more of ZSM-5, Y or beta; the soluble manganese salt is manganese acetate or manganese nitrate, and the soluble rare earth salt is acetate or nitrate of yttrium, lanthanum, neodymium, cerium, europium and the like; the dispersant is one of ammonium polyacrylate or polyethylene glycol, and the dosage is 0.5-2% of the mass of the molecular sieve; the adhesive is one of silica sol and aluminum sol, the concentration is 30-40 wt%, and the dosage is 30-40% of the mass of the molecular sieve.

(3) Impregnation and loading: the corrugated honeycomb carrier is placed in an impregnating solution for impregnation, redundant impregnating solution in a pore channel is blown and swept, and then the honeycomb adsorption catalytic material is obtained after drying at 120 ℃ and roasting at 500-550 ℃.

Example two.

This example is an adsorptive catalytic material prepared by the method of example one, the catalytic material comprising a matrix and an active component, the matrix being glass fibers or ceramic fibers, the active component being a molecular sieve impregnated with a specific metal.

Specifically, the glass fiber is prepared into a corrugated honeycomb carrier with the wavelength of 3.2mm, the corrugation height of 1.8mm and the wall thickness of 0.15 mm. 100g of ZSM-5 molecular sieve with the silicon-aluminum ratio of 350 and the average particle size of 3 microns, 10.08g of manganese acetate, 15.4g of cerium acetate, 1g of ammonium polyacrylate and 35g of 40 wt% silica sol are added with water to prepare impregnation liquid. And then placing the corrugated honeycomb carrier into the impregnating solution slurry for impregnation loading, drying at 120 ℃ for 2 hours, and roasting at 500 ℃ for 3 hours to obtain the honeycomb adsorption catalytic material.

And (3) performance testing:

100g of the adsorption catalyst material prepared by the method of the embodiment is placed in a fixed bed reactor, and the reaction conditions are as follows: the toluene concentration is 100ppm, the relative humidity is 50%, the airspeed is 30000/h, and the room temperature is kept; the toluene adsorption performance test results are shown in fig. 1.

The honeycomb adsorption catalytic material prepared by the method of the embodiment is subjected to toluene catalytic oxidation under different temperature conditions, and the catalytic oxidation conversion rate test result is shown in fig. 2.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.