Method for improving adsorption of activated carbon to low-concentration formaldehyde
A kind of activated carbon adsorption and activated carbon technology, applied in the field of air purification, can solve the problems of easy desorption, poor stability, high cost, etc., and achieve the effect of high removal rate
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0035] Take 8g of activated carbon, soak the activated carbon with ultrasonic vibration of 10% hydrogen peroxide solution for 1.5h, filter and dry for later use; add the oxidized activated carbon to CuCl with a molar concentration of 1.5mol / L 2 and CuSO 4 Soak in the mixed solution for 9h at 36°C with ultrasonic vibration, in which CuCl 2 with CuSO 4 The molar ratio is 1:1; filtered, air-dried; in N 2 Under protection, calcined at 350°C for 2.0h to obtain primary activated carbon; 2 Under protection, the primary activated carbon was calcined at 400°C for 2 hours to obtain secondary activated carbon; 2 Under protection, the secondary activated carbon was calcined at 500 °C for 1 h.
[0036] Put the above-mentioned activated carbon in a volume of 1m with a formaldehyde concentration of 10ppm 3 In a closed device, its removal rate of formaldehyde is 93.4%.
Embodiment 2
[0038] Take 8g of activated carbon, soak the activated carbon with ultrasonic vibration of 13% hydrogen peroxide solution for 1.5h, filter and dry for later use; add the oxidized activated carbon to CuCl with a molar concentration of 2.0mol / L 2 and CuSO 4 In the mixed solution, soak for 8h at 37°C with ultrasonic vibration, in which, CuCl 2 with CuSO 4 The molar ratio is 1:1; filtered, air-dried; in N 2 Under protection, calcined at 340°C for 2.0h to obtain primary activated carbon; 2 Under protection, the primary activated carbon was calcined at 450°C for 1.5h to obtain secondary activated carbon; 2 Under protection, the secondary activated carbon was calcined at 550°C for 0.8h.
[0039] Place the above-mentioned activated carbon in a volume of 1m with a formaldehyde concentration of 10ppm 3 In a closed device, the removal rate of formaldehyde is 95.1%.
Embodiment 3
[0041] Take 8g of activated carbon, soak the activated carbon with ultrasonic vibration of 15% hydrogen peroxide solution for 1h, filter and dry for later use; add the oxidized activated carbon to CuCl with a molar concentration of 2.5mol / L 2 and CuSO 4 Soak in the mixed solution for 7h at 37°C with ultrasonic vibration, in which CuCl 2 with CuSO 4 The molar ratio is 1:1; filtered, air-dried; in N 2 Under protection, calcined at 390°C for 1.5h to obtain primary activated carbon; 2 Under protection, the primary activated carbon was calcined at 480°C for 1 h to obtain secondary activated carbon; 2 Under protection, the secondary activated carbon was calcined at 600°C for 0.5h.
[0042] Place the above-mentioned activated carbon in a volume of 1m with a formaldehyde concentration of 8ppm 3 In a closed device, the removal rate of formaldehyde is 95.6%.
PUM

Abstract
Description
Claims
Application Information

- Generate Ideas
- Intellectual Property
- Life Sciences
- Materials
- Tech Scout
- Unparalleled Data Quality
- Higher Quality Content
- 60% Fewer Hallucinations
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com