Supported nano-silver catalyst capable of eliminating formaldehyde at room temperature and preparation method thereof
A technology for eliminating formaldehyde and nano-silver, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems that formaldehyde cannot be eliminated and the required temperature is high, and achieve low cost, no secondary pollution, The effect of good water vapor resistance and longevity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0021] Weigh 0.0514 g of manganese nitrate and dissolve it in 0.5 ml of deionized water to form a solution, place 0.5 g of ZSM-5 molecular sieve carrier in it, soak in equal volume at 25 °C for 2 h, dry at 120 °C for 6 h, and then roast at 600 °C 2 h, making manganese oxide modified ZSM-5 molecular sieve carrier;
[0022] Weighed 0.0157 g of silver nitrate to make 0.5 ml solution, placed the manganese oxide modified ZSM-5 molecular sieve carrier in it, soaked it at 25 °C for 1 h, dried at 120 °C for 4 h, and calcined at 450 °C for 3 h to obtain the finished catalyst. Where Ag: MnO 2 : ZSM-5 molecular sieve=2:5:100.
[0023] The formaldehyde purification performance of the finished catalyst was evaluated according to the aforementioned test conditions. The initial formaldehyde conversion rate at 20°C was 91.6%, and the formaldehyde conversion rate decreased to 85.2% after 2 hours.
Embodiment 2
[0025] Weigh 0.063 g of cerium nitrate and dissolve it in 0.5 ml of deionized water to form a solution, place 0.5 g of ZSM-5 molecular sieve carrier in it, soak in equal volume at 25 °C for 2 h, dry at 120 °C for 6 h, and then bake at 600 °C 2 h, making cerium oxide modified ZSM-5 molecular sieve carrier;
[0026] Weighed 0.0157 g of silver nitrate to make 0.5 ml solution, placed the ceria-modified ZSM-5 molecular sieve carrier in it, soaked it at 25 °C for 1 h, dried at 120 °C for 4 h, and calcined at 450 °C for 3 h to obtain the finished catalyst. where Ag: CeO 2 : ZSM-5 molecular sieve=2:5:100.
[0027] The formaldehyde purification performance of the finished catalyst was evaluated according to the aforementioned test conditions. The initial formaldehyde conversion rate at 20°C was 92.4%, and the formaldehyde conversion rate decreased to 76.8% after 2 hours.
Embodiment 3
[0029] Weigh 0.076 g of copper nitrate and dissolve it in 0.5 ml of deionized water to form a solution, place 0.5 g of ZSM-5 molecular sieve carrier in it, impregnate in equal volume at 25 °C for 2 h, dry at 120 °C for 6 h, and then bake at 600 °C 2 h, make copper oxide modified ZSM-5 molecular sieve carrier;
[0030] Weighed 0.0157 g silver nitrate to make 0.5 ml solution, put the copper oxide modified ZSM-5 molecular sieve carrier in it, soaked it at 25 °C for 1 h, dried at 120 °C for 4 h, and calcined at 450 °C for 3 h to obtain the finished catalyst. Among them, Ag: CuO: ZSM-5 molecular sieve=2:5:100.
[0031] The formaldehyde purification performance of the finished catalyst was evaluated according to the aforementioned test conditions. The initial formaldehyde conversion rate was 92.9% at 20°C, and the formaldehyde conversion rate decreased to 61.4% after 2 hours.
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to view more - R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap