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CN-122006668-A - G66-NH2/CuCl2Composite material and preparation method and application thereof

CN122006668ACN 122006668 ACN122006668 ACN 122006668ACN-122006668-A

Abstract

The invention provides a G66-NH 2 /CuCl 2 composite material, a preparation method and application thereof, and the composite material is compounded by G66-NH 2 and CuCl 2 , SO that the composite material not only has good adsorption performance, but also has good stability and circularity, can obviously improve the adsorption performance of the composite material on inorganic micromolecular acid and alkaline harmful gases represented by SO 2 and NH 3 , and provides an efficient and economic solution for environmental management. As a typical Zr-MOF material, the G66-NH 2 has higher specific surface area and amino functional modification, can react with various gas molecules, and improves the adsorption capacity on acid gas pollutants. By compounding G66-NH 2 with CuCl 2 , the dual adsorption performance of the composite material on SO 2 and NH 3 can be remarkably enhanced by utilizing the chemical adsorption effect of CuCl 2 . The preparation method of the composite material is simple and economical, raw materials are easy to obtain, the production process has no high energy consumption, and the composite material has important economic benefit and social value in the field of air pollution treatment.

Inventors

  • ZHOU CHUAN
  • LIU FENG
  • YE PINGWEI
  • KANG JIAN
  • YANG BO
  • WU QIONG
  • ZHAI JIAYU
  • Chen Hantong
  • HAN ZAIGUANG

Assignees

  • 中国人民解放军军事科学院防化研究院

Dates

Publication Date
20260512
Application Date
20251228

Claims (7)

  1. 1. The preparation method of the G66-NH 2 /CuCl 2 composite material is characterized by comprising the following steps of: s1, zirconium oxychloride octahydrate Pyrolyzing the 2-amino terephthalic acid in N, N-dimethylformamide DMF, and performing ultrasonic dissolution to form a mixed solution; s2, adding HCl and glacial acetic acid into the mixed solution prepared in the step S1, and carrying out ultrasonic mixing; S3, placing the mixed solution prepared in the step S2 in an oven for heating and heat preservation, naturally cooling, and centrifuging to obtain light yellow gel; S4, washing the gel prepared in the step S3 by using ethanol, drying under the environment condition, and finally washing with acetone and methanol in sequence under the static condition, and drying again to obtain G66-NH 2 xerogel; S5, adding the G66-NH 2 xerogel into a solution of CuCl 2 dissolved in water, soaking and then drying to obtain a black product, namely the G66-NH 2 /CuCl 2 composite material.
  2. 2. The method for preparing a G66-NH 2 /CuCl 2 composite material according to claim 1, wherein in step S1, zirconium oxychloride octahydrate The mass ratio to 2-amino terephthalic acid was 1.25:1.
  3. 3. The method of claim 1, wherein in step S2, the volume ratio of HCl to glacial acetic acid is 4:6.
  4. 4. The method of claim 1, wherein in step S4, the environmental condition is that the drying temperature is kept at 30 to 40 ℃.
  5. 5. The method of preparing a G66-NH 2 /CuCl 2 composite material according to claim 1, wherein the method of preparing a G66-NH 2 /CuCl 2 composite material comprises the steps of: S1, 2.34g of zirconium oxychloride octahydrate And 0.94g of 2-amino terephthalic acid is pyrolyzed in 30ml of N, N-dimethylformamide DMF and is oscillated under ultrasonic conditions for 10min until complete dissolution, forming a mixed solution; s2, adding 4.8ml of HCl and 7.2ml of glacial acetic acid into the mixed solution prepared in the step S1, and uniformly mixing through ultrasonic oscillation; s3, placing the mixed solution prepared in the step S2 in an oven at 100 ℃ for heat preservation for 2 hours, naturally cooling, and centrifuging to obtain light yellow gel; S4, washing the gel prepared in the step S3 by using ethanol, drying under the environment condition, and finally washing with acetone and methanol in sequence under the static condition, and drying again to obtain G66-NH 2 xerogel; S5, adding 4G of G66-NH 2 xerogel into a solution of 32G of CuCl 2 dissolved in 80ml of water, soaking for 24 hours at 80 ℃, and drying to obtain a black product, namely the G66-NH 2 /CuCl 2 composite material.
  6. 6. A G66-NH 2 /CuCl 2 composite, characterized in that the G66-NH 2 /CuCl 2 composite is prepared by the method of any one of claims 1 to 5.
  7. 7. Use of a G66-NH 2 /CuCl 2 composite according to claim 6, wherein the G66-NH 2 /CuCl 2 composite is used for adsorbing SO 2 and NH 3 .

Description

G66-NH 2/CuCl2 composite material and preparation method and application thereof Technical Field The invention belongs to the technical field of toxic industrial gas adsorption and purification, and particularly relates to a G66-NH 2/CuCl2 composite material, a preparation method thereof and application of effective protection of toxic industrial gases represented by SO 2 and NH 3. Background With the increasing environmental pollution problem caused by industrialization, toxic industrial gases in the air become a main pollution source affecting human health and air quality. Sulfur dioxide (SO 2) and ammonia (NH 3) are typical of acidic and basic air pollutants, respectively, and emissions are increasing, especially in industrial and agricultural activities. On the one hand, the emission of SO 2 not only leads to the formation of acid rain, but also causes direct harm to human respiratory system, and long-term exposure to the condition containing a certain concentration of SO 2 can cause various respiratory diseases including pneumonia, chronic bronchitis, asthma and the like. On the other hand, NH 3 is a gas having a pungent taste, the emission of which is mainly derived from the processes of use of agrochemicals, wastewater treatment and the like, and ammonia gas of high concentration has a considerable harm to human health, and long-term exposure causes diseases of respiratory system and nervous system. Currently, many gas purification materials are available on the market that are capable of adsorbing and removing contaminants from air to some extent. However, most of these materials only have a better adsorption effect on a certain or a certain class of gas (SO 2 or NH 3), and in practical environments, SO 2 and NH 3 exist simultaneously, SO that the purification materials show poorer adsorption selectivity and pollution resistance, and practical application of the purification materials is limited. Therefore, developing a comprehensive protective material capable of removing two kinds of harmful gases simultaneously becomes a difficult problem to be solved in the current environmental treatment field. In recent years, metal organic framework Materials (MOFs) become a gas adsorption material with good prospect due to the unique pore structure and adjustable surface chemical property. Especially, G66-NH 2 is taken as a typical gel Zr-MOF, has rich pore structures, higher specific surface area, amino functional modification and other advantages, and has great potential in the aspects of gas adsorption, storage, purification and the like. Wherein, NH 2 functional group is helpful to the action of the functional group and various gas molecules, and improves the adsorption capacity of the functional group on acid gas pollutants. In addition, the three-dimensional framework structure of the G66-NH 2 enables the gas to have excellent stability and higher porosity, can provide more adsorption sites, and is beneficial to improving the adsorption effect of the gas to various gases. However, the single G66-NH 2 has poor adsorption effect on NH 3, and the high efficiency requirement on removing SO 2 and NH 3 in industrial and environmental treatment is difficult to meet only depending on G66-NH 2. To overcome this limitation, the adsorption capacity of the material to various gases can be enhanced to some extent by compounding the material with other materials having adsorption capacity. Among them, copper chloride (CuCl 2) has good performance in gas purification, and can react with gas molecules through chemisorption, thereby enhancing the removal of harmful gases by the material. By compounding the G66-NH 2 with CuCl 2, the double adsorption performance of the composite material on SO 2 and NH 3 can be effectively improved. Therefore, the composite material based on G66-NH 2 and CuCl 2 becomes a potential technology path. In summary, the G66-NH 2/CuCl2 composite material is developed and applied as a gas adsorption material, SO that the double adsorption performance of the gas adsorption material on SO 2 and NH 3 can be improved, and a more efficient and economic technical scheme is provided for atmospheric pollution treatment. Disclosure of Invention First, the technical problem to be solved The invention provides a G66-NH 2/CuCl2 composite material, a preparation method and application thereof, and aims to solve the technical problem of improving double adsorption performance on SO 2 and NH 3. (II) technical scheme In order to solve the technical problems, the invention provides a preparation method of a G66-NH 2/CuCl2 composite material, which comprises the following steps: s1, zirconium oxychloride octahydrate Pyrolyzing the 2-amino terephthalic acid in N, N-dimethylformamide DMF, and performing ultrasonic dissolution to form a mixed solution; s2, adding HCl and glacial acetic acid into the mixed solution prepared in the step S1, and carrying out ultrasonic mixing; S3, placing the mixed solution prepared in