Unlock instant, AI-driven research and patent intelligence for your innovation.

one for absorbing so 2 Supported ionic liquid color-changing material, preparation method and application thereof

An ionic liquid and color-changing material technology, which is applied in the field of supported ionic liquid color-changing materials and their preparation, can solve the problems of inability to intuitively judge the absorption effect, no color indicating function, and high processing cost, and achieves extended use temperature range and easy identification. , the effect of simple preparation process

Active Publication Date: 2021-02-26
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, currently supported ionic liquids have high selectivity to the ionic liquids used, and not all ionic liquids can completely retain their absorption properties after being loaded on the carrier. expensive, thus making SO 2 higher processing costs
In addition, the current absorbent materials generally do not have the function of color indication, so it is impossible to intuitively judge the absorption effect

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
  • one for absorbing so <sub>2</sub> Supported ionic liquid color-changing material, preparation method and application thereof
  • one for absorbing so <sub>2</sub> Supported ionic liquid color-changing material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 Preparation of supported ionic liquid color-changing material

[0023] (1) Preparation of acetamide / sodium thiocyanate ionic liquid

[0024] Under the protection of nitrogen, uniformly mix acetamide and sodium thiocyanate with a molar ratio of 3:1 in a closed two-necked bottle, heat to melt, and stir for 15 to 30 minutes until the mixture becomes clear and viscous liquid is formed. Cool to room temperature in a vacuum oven to obtain the deep eutectic ionic liquid acetamide / sodium thiocyanate with a yield of 100%. The decomposition temperature of the ionic liquid obtained through thermogravimetric analysis is 153°C.

[0025] (2) Pretreatment of silica gel

[0026] Take commercially available industrial grade silica gel, place it in a muffle furnace at 200°C, and calcinate for 12 hours to remove impurities and moisture contained in the silica gel, and place it in a vacuum desiccator after cooling for later use.

[0027] (3) Loading of ionic liquids

[002...

Embodiment 2

[0035] Embodiment 2 Loaded ionic liquid color-changing material absorption experiment

[0036] At 30°C and normal pressure, the SO 2 Gas is passed into the loaded ionic liquid color-changing material that embodiment 1 and comparative example 1 and 2 make with the flow rate of 30mL / min, calculate SO 2 The results are shown in Table 1.

[0037] Table 1 SO of three kinds of ionic liquid support materials 2 Absorption

[0038]

[0039] It can be seen from Table 1 that after the two ionic liquids of acetamide / potassium thiocyanate and acetamide / ammonium thiocyanate were loaded on silica gel, the SO 2 The absorptions are significantly lower than the loading material of the present invention.

[0040] SO 2 The absorption effect is equivalent.

Embodiment 3

[0041] The discoloration performance of embodiment 3 supported ionic liquid discoloration material

[0042] With the material that embodiment 1 makes absorbs the SO of different quality 2 , observing its color, SO per gram of material 2 When the absorption amount is 0g, the material is white, and the SO per gram of material 2 When the absorption amount is 0.1g, the material is reddish, and the SO per gram of material 2 When the absorption amount is 0.2g, the material is light red, and the SO per gram of material 2 When the absorption amount is 0.3g and above, the material is brick red.

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

PropertyMeasurementUnit
decomposition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of new material application, and specifically discloses a 2 The supported ionic liquid color-changing material is prepared by loading acetamide / sodium thiocyanate ionic liquid onto silica gel. The invention also discloses the preparation method and application of the material. The preparation method is simple, and the loading material with a high loading rate can be obtained by the impregnation method, which can be used for efficiently absorbing SO 2 , and can be recycled after desorption by heating. The material of the present invention can also change color according to the absorption amount, and can achieve semi-quantitative determination of SO in the environment. 2 The role of content.

Description

technical field [0001] The invention relates to the technical field of new material application, in particular to a 2 The supported ionic liquid color-changing material and its preparation method and application. Background technique [0002] SO 2 It is one of the main air pollutants, which mainly comes from the combustion of fossil fuels and vehicle exhaust emissions. Excessive SO 2 Emissions cause acid rain, photochemical smog and other environmental problems that seriously affect people's health and daily life. for SO 2 pollution problems, countries are also conducting research on new treatment technologies to reduce SO 2 Harm to the ecological environment and health. At present, the industrial desulfurization methods mainly include alkali solution absorption method, activated carbon adsorption method, catalytic oxidation method and so on. With the continuous development of science and technology, the newly developed process requires that while achieving a good abso...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
CPCB01D53/1481B01D53/1493B01D2252/30
Inventor 刘宝友张佩文李凤王辉胡华吕帆
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY