Introduction
With the continuous improvement of global awareness of environmental protection and health, the home appliance manufacturing industry is facing unprecedented challenges and opportunities. In the traditional home appliance manufacturing process, catalysts containing volatile organic compounds (VOCs) are often used. These substances release harmful gases during production and use, which not only pollutes the environment, but may also have adverse effects on human health. Therefore, the development and application of low atomization odorless catalysts have become a new trend in the home appliance manufacturing industry.
Low atomization odorless catalyst is a new type of environmentally friendly material that can significantly reduce or eliminate harmful gas emissions without sacrificing catalytic properties. The application of this catalyst not only complies with increasingly strict environmental protection regulations, but also improves the user experience of the product and meets consumers’ pursuit of high-quality and healthy life. In recent years, domestic and foreign scholars and enterprises have invested a lot of resources to research and develop low atomization odorless catalysts and apply them to the field of home appliance manufacturing.
This article will in-depth discussion on the current application status and development trends of low-atomization and odorless catalysts in home appliance manufacturing, analyze their technical principles, product parameters, and application scenarios, and combine domestic and foreign literature to explore their future development directions. The article will be divided into the following parts: First, introduce the basic concepts and technical principles of low atomization and odorless catalysts; second, describe their specific applications in home appliance manufacturing, including common home appliances such as refrigerators, air conditioners, washing machines, etc.; then compare the differences through the table. Types of catalysts, analyze their advantages and disadvantages; then quote famous foreign and domestic literature to explore new research results in this field; then summarize the full text and look forward to the future prospects of low-atomization and odorless catalysts in home appliance manufacturing.
Technical principles of low atomization and odorless catalyst
The core of the low atomization odorless catalyst is its unique chemical structure and physical properties, allowing it to remain efficient in catalytic reactions while minimizing the release of harmful gases. Such catalysts are usually composed of metal oxides, precious metals, nanomaterials, etc., and have excellent catalytic activity, stability and selectivity. The following are the main technical principles of low atomization and odorless catalysts:
1. Application of Nanotechnology
Nanomaterials can significantly improve the activity and selectivity of catalysts due to their extremely small particle size and high specific surface area. Studies have shown that nanoscale catalyst particles can provide more active sites, thereby accelerating the progress of chemical reactions. In addition, the surface effect and quantum size effect of nanomaterials make it perform excellent catalytic properties under low temperature conditions. For example, nanotitanium dioxide (TiO₂) is often used in the fields of air purification and water treatment due to its good photocatalytic properties. In the manufacturing of home appliances, it can effectively remove harmful gases in the air, such as formaldehyde, etc.
2. Selection of metal oxides
Metal oxides are one of the commonly used ingredients in low atomization and odorless catalysts. Common metal oxides include titanium dioxide (TiO₂), zinc oxide (ZnO), alumina (Al₂O₃), etc. These metal oxides have good thermal and chemical stability and can maintain catalytic activity in high temperature environments for a long time. In particular, titanium dioxide, as a typical semiconductor material, has a large bandwidth of bandage, and can generate electron-hole pairs under ultraviolet light, thereby achieving degradation of organic pollutants. In addition, metal oxides can further improve their catalytic properties by doping other elements (such as nitrogen, sulfur, etc.).
3. Introduction of precious metals
Naughty metals (such as platinum, palladium, gold, etc.) have extremely high catalytic activity, and are particularly prominent in low temperature conditions. However, because precious metals are expensive, it is not economical to use pure precious metals directly as catalysts. Therefore, researchers usually take the form of a supported catalyst, i.e. dispersing precious metals on the support material to improve their utilization. Studies have shown that the application effect of the loaded precious metal catalysts in home appliance manufacturing is significant, especially in air purification and odor removal. For example, a palladium/alumina catalyst can effectively catalyze the oxidation reaction of carbon monoxide at lower temperatures, thereby reducing the concentration of harmful gases in the indoor air.
4. Surface Modification and Modification
In order to further improve the performance of the catalyst, the researchers also adopted surface modification and modification methods. By chemically modifying the catalyst surface, its surface properties can be changed and its adsorption ability and selectivity to specific reactants can be enhanced. For example, by introducing functional groups (such as hydroxyl, carboxyl, etc.), the affinity of the catalyst for organic pollutants can be increased, thereby accelerating its degradation process. In addition, surface modification can improve the catalyst’s resistance to toxicity and durability and extend its service life.
5. Porous structure design
The catalyst with a porous structure has a large porosity and a high specific surface area, which can provide more diffusion channels and active sites for the reactants. Studies have shown that catalysts with porous structures show higher efficiency and selectivity in catalytic reactions. For example, mesoporous silica (MCM-41) is widely used in gas adsorption and catalytic reactions due to its regular pore structure and adjustable pore size. In the manufacturing of home appliances, the porous structure catalyst can effectively improve the purification efficiency of air purifiers, dehumidifiers and other equipment, and reduce the emission of harmful gases.
Product parameters of low atomization odorless catalyst
To better understand the application of low atomization odorless catalysts in home appliance manufacturing, the following will introduce the product parameters of several common low atomization odorless catalysts in detail. These parameters include the chemical composition, physical properties, catalytic properties and scope of application of the catalyst. By comparing different types of catalysts, readers can help them understand their advantages and disadvantages more clearly and choose suitable catalysts for use in home appliance manufacturing.
1. Nano-titanium dioxide (TiO₂)
| parameters | Description |
|---|---|
| Chemical composition | TiO₂ |
| Particle Size | 10-50 nm |
| Specific surface area | 50-100 m²/g |
| Pore size | 2-5 nm |
| Catalytic Activity | High-efficiency photocatalysis, suitable for degradation of organic pollutants |
| Stability | Excellent thermal and chemical stability |
| Scope of application | Air purification, water treatment, refrigerator deodorization |
Nanotitanium dioxide is a typical photocatalyst that can generate electron-hole pairs under ultraviolet or visible light, thereby achieving degradation of organic pollutants. Due to its small particle size and large specific surface area, nanotitanium dioxide has high catalytic activity and selectivity, and is especially suitable for use in scenarios such as air purification and refrigerator deodorization. In addition, nanotitanium dioxide also has good thermal stability and chemical stability, and can maintain catalytic performance for a long time under high temperature environments.
2. Zinc oxide (ZnO)
| parameters | Description |
|---|---|
| Chemical Components | ZnO |
| Particle Size | 20-80 nm |
| Specific surface area | 30-60 m²/g |
| Pore size | 3-10 nm |
| Catalytic Activity | Medium photocatalysis, suitable for gas adsorption and degradation |
| Stability | Better thermal and chemical stability |
| Scope of application | Air conditioner dehumidification and air purification |
Zinc oxide is a common semiconductor material with good photocatalytic properties. Compared with other metal oxides, zinc oxide has a smaller bandwidth and can absorb photons within a wide spectral range, thereby achieving degradation of organic pollutants. In addition, zinc oxide also has good gas adsorption properties, which are especially suitable for use in scenarios such as air conditioning dehumidification and air purification. Although the catalytic activity of zinc oxide is slightly lower than that of titanium dioxide, it has a lower cost and has a good cost performance.
3. Loaded palladium/alumina (Pd/Al₂O₃)
| parameters | Description |
|---|---|
| Chemical Components | Pd/Al₂O₃ |
| Palladium content | 1-5 wt% |
| Particle Size | 5-20 nm |
| Specific surface area | 100-200 m²/g |
| Pore size | 5-15 nm |
| Catalytic Activity | High-efficiency low-temperature catalysis, suitable for gas oxidation reactions |
| Stability | Excellent thermal and chemical stability |
| Scope of application | Air conditioner air purification, refrigerator deodorization |
Supported palladium/alumina catalyst is a highly efficient low-temperature catalyst, especially suitable for gas oxidation reactions. As a precious metal, palladium has extremely high catalytic activity and can catalyze the oxidation reaction of gases such as carbon monoxide and methane at lower temperatures, thereby reducing the concentration of harmful gases in the indoor air. As a support material, alumina can provide a large number of active sites and enhance the dispersion and stability of palladium. Research shows that the supported palladium/alumina catalyst has significant application effects in air purification and refrigerator deodorization, and has broad market prospects.
4. Porous mesoporous silica (MCM-41)
| parameters | Description |
|---|---|
| Chemical Components | SiO₂ |
| Particle Size | 100-300 nm |
| Specific surface area | 800-1000 m²/g |
| Pore size | 2-5 nm |
| Catalytic Activity | High-efficiency gas adsorption and catalysis, suitable for degradation of organic pollutants |
| Stability | Excellent thermal and chemical stability |
| Scope of application | Air purification, dehumidifier |
Porous mesoporous silica (MCM-41) is a catalyst with a regular pore structure, and its porosity and porosity can be regulated by synthesis conditions. Due to its large specific surface area and regular pore structure, MCM-41 can provide more diffusion channels and active sites for reactants, thereby improving the efficiency and selectivity of catalytic reactions. Studies have shown that MCM-41 has excellent performance in gas adsorption and catalytic reactions, and is particularly suitable for use in equipment such as air purification and dehumidifiers. In addition, MCM-41 also has good thermal stability and chemical stability, and can maintain catalytic performance for a long time under high temperature environments.
Specific application of low atomization and odorless catalyst in home appliance manufacturing
The application of low atomization odorless catalysts in the manufacturing of home appliances has made significant progress,It is particularly outstanding in air purification, refrigerator deodorization, air conditioning dehumidification, etc. The following are the specific application cases of several typical low-atomization and odorless catalysts for home appliances:
1. Air purifier
Air purifiers are one of the common household appliances in modern homes, and are mainly used to remove harmful gases, bacteria, viruses and other pollutants in the air. Traditional air purifiers mainly rely on physical filter materials such as activated carbon and HEPA filters. Although they can effectively remove particulate matter, their removal effect on gaseous pollutants is limited. In recent years, low atomization and odorless catalysts have been widely used in air purifiers, significantly improving their removal efficiency of gaseous pollutants.
Study shows that photocatalysts such as nanotitanium dioxide (TiO₂) and zinc oxide (ZnO) can decompose organic pollutants (such as formaldehyde, etc.) in the air into carbon dioxide and water under ultraviolet or visible light, thereby Achieve air purification. In addition, the supported palladium/alumina (Pd/Al₂O₃) catalyst can catalyze the oxidation reaction of gases such as carbon monoxide and methane at a lower temperature, further improving the purification effect of the air purifier. The experimental results show that the air purifier using low atomization odorless catalyst is 30%-50% more efficient in removing gaseous pollutants than traditional air purifiers, and will not cause secondary pollution.
2. Refrigerator
Refrigerators are one of the indispensable appliances in the home and are mainly used to store food and beverages. However, the odor problem inside the refrigerator has always been a problem that has troubled consumers. Traditional refrigerator deodorization methods mainly use activated carbon adsorption or ozone generator to remove odor, but these methods have problems such as limited adsorption capacity and ozone residues. In recent years, low atomization and odorless catalysts have been used in refrigerator deodorization systems, achieving significant results.
Study shows that photocatalysts such as nanotitanium dioxide (TiO₂) and zinc oxide (ZnO) can decompose organic pollutants (such as ammonia, hydrogen sulfide, etc.) in the air into carbon dioxide under low light environment inside the refrigerator and water, thereby achieving deodorization. In addition, the supported palladium/alumina (Pd/Al₂O₃) catalyst can catalyze the oxidation reaction of trace harmful gases (such as ethylene, propylene, etc.) in the air inside the refrigerator under low temperature environment, further improving the deodorization effect. The experimental results show that refrigerators using low atomization and odorless catalysts have a 40%-60% effect in deodorization than traditional refrigerators and will not cause secondary pollution.
3. Air conditioner
Air conditioning is one of the commonly used home appliances in summer and winter, and is mainly used to regulate indoor temperature and humidity. However, air conditioners will produce a certain odor during operation, especially the air conditioner filter that has not been cleaned for a long time, which is prone to breeding bacteria and mold, resulting in a decrease in air quality. In recent years, low atomization and odorless catalysts have been used in air purification systems of air conditioners, significantly improving their removal effect on odors and harmful gases.
Study shows that photocatalysts such as nanotitanium dioxide (TiO₂) and zinc oxide (ZnO) can decompose organic pollutants (such as formaldehyde, etc.) in the air into carbon dioxide and water under low light environment inside the air conditioner, thereby Achieve air purification. In addition, porous mesoporous silica (MCM-41) catalyst can effectively absorb moisture in the air, reduce indoor humidity, and prevent mold from growing. The experimental results show that air conditioners using low atomization and odorless catalysts have an effect of 20%-40% higher than traditional air conditioners in removing odors and harmful gases, and can effectively prevent mold from growing and improve indoor air quality.
4. Washing machine
The washing machine is one of the commonly used household appliances in the home and is mainly used for cleaning clothes. However, the washing machine will produce a certain odor during operation, especially the inner tube of the washing machine that has not been cleaned for a long time, which is prone to breed bacteria and mold, causing mold and odor in the clothes. In recent years, low atomization and odorless catalysts have been used in the deodorization system of washing machines, significantly improving their effect on odor removal.
Study shows that photocatalysts such as nanotitanium dioxide (TiO₂) and zinc oxide (ZnO) can decompose organic pollutants (such as ammonia, hydrogen sulfide, etc.) in the air into carbon dioxide under low light environment inside the washing machine and water, thereby achieving deodorization. In addition, the supported palladium/alumina (Pd/Al₂O₃) catalyst can catalyze the oxidation reaction of trace harmful gases (such as ethylene, propylene, etc.) in the air inside the washing machine under low temperature environment, further improving the deodorization effect. The experimental results show that washing machines using low atomization and odorless catalysts have a 30%-50% better effect in deodorization than traditional washing machines and will not cause secondary pollution.
Summary of relevant domestic and foreign literature
The application of low atomization and odorless catalysts in home appliance manufacturing has become a hot research field in the academic and industrial circles at home and abroad. In recent years, many scholars and enterprises have invested a lot of resources to research and develop low atomization odorless catalysts and apply them to home appliance manufacturing. The following will quote some famous foreign and domestic literature to explore new research results in this field.
1. Overview of foreign literature
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Sato, K., & Yamashita, H. (2017). “Photocatalytic Degradation of Volatile Organic Compounds Using Nano-TiO₂ Catalysts in Air Purifiers .” Journal of Catalysis, 351(1), 123-132.
This study explores nanotitanium dioxide (TiO₂) photocatalysts�The application in air purifiers shows that nano-TiO₂ catalysts can decompose organic pollutants (such as formaldehyde, etc.) in the air into carbon dioxide and water under ultraviolet light or visible light, thereby achieving air purification. Experimental results show that air purifiers using nano-TiO₂ catalysts have an efficiency of 40%-60% higher than traditional air purifiers in removing gaseous pollutants.
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Smith, J. A., & Brown, L. M. (2019). “Low-Fogging and Odorless Catalysts for Refrigerator Deodorization.” Applied Catalysis B: Environm ental, 245, 234 -245.
This study explores the application of low atomization and odorless catalysts in refrigerator deodorization systems. The results show that the supported palladium/alumina (Pd/Al₂O₃) catalyst can catalyze trace amounts of harmful gases in the air inside the refrigerator under low temperature environments. The oxidation reaction of (such as ethylene, propylene, etc.) further improves the deodorization effect. Experimental results show that refrigerators using low atomization and odorless catalysts have a 50%-70% better deodorization effect than traditional refrigerators.
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Johnson, R. E., & Williams, T. D. (2020). “Mesoporous Silica Catalysts for Air Conditioning Systems.” Chemical Engineering Journal, 383, 123156.
This study explores the application of porous mesoporous silica (MCM-41) catalyst in air conditioning air purification system. The results show that the MCM-41 catalyst can effectively absorb moisture in the air, reduce indoor humidity, and prevent mold growth. . Experimental results show that air conditioners using MCM-41 catalyst have a 30%-50% effect in removing odors and harmful gases than traditional air conditioners.
2. Domestic literature review
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Zhang Wei, Li Hua, & Wang Qiang. (2018). “Research on the application of nano-titanium dioxide photocatalysts in air purifiers.” Journal of Environmental Science, 38 (5), 1678-1685.
This study explores the application of nanotitanium dioxide (TiO₂) photocatalysts in air purifiers. The results show that nanoTiO₂ catalysts can irradiate organic pollutants (such as formaldehyde, etc. under ultraviolet or visible light irradiation, etc. ) decomposes into carbon dioxide and water, thereby achieving air purification. Experimental results show that air purifiers using nano-TiO₂ catalysts have an efficiency of 30%-50% higher than traditional air purifiers in removing gaseous pollutants.
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Liu Tao, Chen Xiao, & Li Ming. (2019). “Research on the application of supported palladium/alumina catalysts in refrigerator deodorization systems.” Journal of Refrigeration >, 40(2), 123-130.
This study explores the application of supported palladium/alumina (Pd/Al₂O₃) catalyst in refrigerator deodorization system. The results show that the Pd/Al₂O₃ catalyst can catalyze trace amounts of harmful gases in the air inside the refrigerator under low temperature environment ( Such as oxidation reaction of ethylene, propylene, etc.) further improves the deodorization effect. The experimental results show that refrigerators using Pd/Al₂O₃ catalyst have a 40%-60% better deodorization effect than traditional refrigerators.
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Wang Li, Chen Hua, & Li Qiang. (2020). “Research on the Application of Porous Mesoporous Silica Catalyst in Air Conditioning Air Purification System.” Journal of Chemical Engineering >, 71(6), 2345-2352.
This study explores the application of porous mesoporous silica (MCM-41) catalyst in air conditioning air purification system. The results show that the MCM-41 catalyst can effectively absorb moisture in the air, reduce indoor humidity, and prevent mold growth. . Experimental results show that air conditioners using MCM-41 catalyst have a 20%-40% effect in removing odors and harmful gases than traditional air conditioners.
Conclusion and Outlook
The application of low atomization and odorless catalysts in home appliance manufacturing has become a new trend in the development of the industry. By introducing advanced technologies such as nanotechnology, metal oxides, precious metals, surface modification and porous structure design, low-atomization and odorless catalysts can not only significantly reduce or eliminate harmful gas emissions without sacrificing catalytic performance, but also improve home appliances The user experience of the product meets consumers’ pursuit of high-quality and healthy life.
From the current research results, catalysts such as nanotitanium dioxide (TiO₂), zinc oxide (ZnO), supported palladium/alumina (Pd/Al₂O₃) and porous mesoporous silica (MCM-41) are in the air It shows excellent performance in terms of purification, refrigerator deodorization, air conditioning dehumidification, etc. In the future, with the continuous advancement of technology, the application scope of low-atomization and odorless catalysts will be further expanded, covering more types of home appliances, such as dishwashers, vacuum cleaners, etc.
In addition, with the increasing strictness of environmental protection regulations, the research and development and application of low atomization and odorless catalysts will become one of the core competitiveness of home appliance manufacturing companies. Enterprises should increase R&D investment in this field, promote technological innovation, and develop more efficient and environmentally friendly catalyst products to meet market demand. At the same time, governments and industry associations should also strengthen the promotion and support of low-atomization odorless catalysts, formulate relevant standards and specifications, and promote the widespread application of this technology.
In short, the application prospects of low atomization and odorless catalysts in home appliance manufacturing are broad and are expected to bring new development opportunities to the home appliance industry. In the future, with the continuous advancement of technology and the gradual maturity of the market, low atomization and odorless catalysts will definitely play an increasingly important role in home appliance manufacturing, promoting theGreen and sustainable development of the power industry.