Modified carbon capable of efficiently removing formaldehyde at normal temperature and preparation method of modified carbon

A modified carbon, high-efficiency technology, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of small molecular weight of formaldehyde, can not meet application requirements, strong polarity, etc., and achieve a simple and easy preparation method. , long-term performance, and efficiency improvement

Inactive Publication Date: 2018-07-20
SHENZHEN CHINA TEXTILE FILTERS
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small molecular weight and strong polarity of formaldehyde, it is difficult to remove it by physical adsorption with ordinary activated carbon.
For this reason, some people carry out physical treatment on ordinary activated carbon, specifically to change the pore structure of activated carbon (such as: pore volume, pore size or pore distribution, etc.). Although the formaldehyde removal performa

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified carbon capable of efficiently removing formaldehyde at normal temperature and preparation method of modified carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment 1 provides a method for preparing modified carbon with high efficiency in removing formaldehyde at room temperature, comprising the following steps:

[0024] ① Prepare an organic amine solution with a mass concentration of 1%, and the organic amine is diethylamine;

[0025] ②Adjust the pH value of the above-mentioned organic amine solution to 10.0 with 1mol / L sulfuric acid solution to obtain an organic amine impregnation solution;

[0026] ③ Slowly add activated carbon into the above organic amine impregnation solution with a solid-to-liquid ratio of 1:1, mix well, and impregnate for 40 minutes;

[0027] ④Take out the impregnated activated carbon, and dry it at 110°C for 2 hours to obtain a modified carbon with high efficiency of removing formaldehyde at room temperature.

Embodiment 2

[0029] This Example 2 provides a method for preparing modified carbon with high-efficiency removal of formaldehyde at room temperature, comprising the following steps:

[0030] ① Prepare an organic amine solution with a mass concentration of 3%, and the organic amine is diethylenetriamine;

[0031] ②Adjust the pH value of the above-mentioned organic amine solution to 10.5 with 1mol / L sulfuric acid solution to obtain an organic amine impregnation solution;

[0032] ③ Slowly add activated carbon into the above organic amine impregnation solution with a solid-to-liquid ratio of 1:3, mix well, and impregnate for 35 minutes;

[0033] ④Take out the impregnated activated carbon, and dry it at 105°C for 2 hours to obtain a modified carbon with high efficiency of removing formaldehyde at room temperature.

Embodiment 3

[0035] This embodiment 3 provides a method for preparing modified carbon with high-efficiency removal of formaldehyde at room temperature, comprising the following steps:

[0036] ① Prepare an organic amine solution with a mass concentration of 5%, and the organic amine is triethylenetetramine;

[0037] ②Adjust the pH value of the above-mentioned organic amine solution to 11 with 1mol / L sulfuric acid solution to obtain an organic amine impregnation solution;

[0038] ③ Slowly add activated carbon into the above organic amine impregnation solution with a solid-to-liquid ratio of 1:5, mix well, and impregnate for 30 minutes;

[0039] ④Take out the impregnated activated carbon, and dry it at 95°C for 2 hours to obtain a modified carbon with high efficiency of removing formaldehyde at room temperature.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of modified carbon capable of efficiently removing formaldehyde at the normal temperature. The preparation method comprises the steps as follows: (1) preparing an organic amine solution with the mass concentration being 1%-10%; (2) adjusting the pH value of the organic amine solution to 10.0-11.5 with a sulfuric acid solution to obtain an organic amineimpregnation liquid; (3) adding activated carbon to the organic amine impregnation liquid, and performing uniform mixing and impregnation; (4) taking out and drying the impregnated activated carbon toobtain the modified carbon capable of efficiently removing formaldehyde at the normal temperature. The preparation method of the modified carbon is simple and easy to implement. Tests prove that themodified carbon prepared with the preparation method can quickly trap and efficiently adsorb formaldehyde gas, has good formaldehyde removal long-acting performance and can meet the requirement of long-term effective formaldehyde removal in the indoor environment.

Description

technical field [0001] The invention relates to a formaldehyde-removing material, in particular to a normal-temperature high-efficiency formaldehyde-removing modified carbon and a preparation method thereof. Background technique [0002] With the development of social economy and the improvement of human living standards, people's requirements for quality of life are getting higher and higher, and the decoration of living rooms is becoming more and more popular. However, while the decoration of the living room has brought us convenience, it has also brought pollution to our indoor air. [0003] Plywood, MDF, plywood, composite wood flooring and other artificial wood panels used for decoration are bonded by urea-formaldehyde resin glue or phenolic resin glue. These resin glues contain free formaldehyde, which can be slowly released under normal temperature and pressure. into the air. Formaldehyde released by decoration materials has become one of the main pollutants in indo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J20/22B01J20/30B01D53/02B01D53/81B01D53/72
CPCB01D53/02B01D53/72B01D53/81B01D2258/06B01J20/20B01J20/22
Inventor 闵书学杜靖瞿耀华程顺清徐桂成
Owner SHENZHEN CHINA TEXTILE FILTERS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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