Lead ion adsorption material for automobile tail gas, and preparation method and application thereof

A technology for automobile exhaust and adsorption materials, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of long infiltration time, complicated operation, expensive equipment, etc., achieve a wide linear range, avoid secondary pollution, and operate easy effect

Inactive Publication Date: 2019-01-11
河北地质大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the disadvantages of long penetration time, expensive equipment, complicated operation and low permeability in the existing lead ion penetration method, the purpose of the present invention is to provide a lead ion adsorption material in automobile exhaust, a preparation method and its application

Method used

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  • Lead ion adsorption material for automobile tail gas, and preparation method and application thereof
  • Lead ion adsorption material for automobile tail gas, and preparation method and application thereof
  • Lead ion adsorption material for automobile tail gas, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 22 parts of ionic liquid [BPy]NO with a mass fraction of 23% 3 and 58 parts with a mass fraction of 10% (NH 4 ) 3 C 6 h 5 o 7 Mix well to obtain a two-phase aqueous extraction system, then add 20 parts by mass fraction of 40% DTZ-PAM-Gel to obtain a gel-like mixture, and burn the above-mentioned gel-like mixture under nitrogen protection for two hours to form powdery particles , and then stored in a vacuum oven at 40° C. for 48 hours to obtain an active adsorption material for ionic liquids.

[0033] The adsorbent material was taken out and used to capture lead ions in automobile exhaust, and the permeability of the target before and after capture was recorded in Table 1.

Embodiment 2

[0035] The preparation method of this example is the same as that of Example 1, the only difference is that the type of ionic liquid in the preparation process is different. In this example, the ionic liquid is changed to [2-aemim][PF6](1-aminoethyl-3- Methylimidazole hexafluorophosphate), and the rest of the conditions were unchanged, and the permeability of the target before and after capture was recorded in Table 1.

Embodiment 3

[0037] The preparation method of this example is the same as Example 1, the only difference is that the type of ionic liquid in the preparation process is different, in this example, the ionic liquid is changed to [cmmim][PF6](1-acetoxy-3-methylimidazole hexafluorophosphate), and the rest of the conditions were unchanged, and the permeability of the target before and after capture was recorded in Table 1.

[0038] It can be seen from the above examples and Table 1 that the permeability of lead ions in the separation of automobile exhaust is respectively 99.6%, 74.3%, and 59.3% by changing the composition of the ionic liquid in the adsorbent material, so [BPy]NO 3 When used as an ionic liquid, the permeability of lead ions in automobile exhaust is the largest, and the penetration effect is the best.

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Abstract

The invention discloses a lead ion adsorption material for automobile tail gas, and a preparation method and an application thereof; nitrobutyl pyridine nitrate, ammonium citrate and polyacrylamide-dithizone grafted chelate gel are mixed and burned to obtain a product, wherein the burning temperature is 150-170 DEG C, and the mass ratio of nitrobutyl pyridine nitrate to ammonium citrate to the polyacrylamide dithizone grafted chelate gel is 2:5:3. The ionic liquid active adsorption material is prepared. The preparation method of the adsorption material is fast and convenient, a special ionic liquid, salt and grafted chelate gel are used during preparation, and the prepared filamentous ionic liquid active adsorption material has high targeting property and trapping efficiency; according tothe method, the permeability rate of lead ions in automobile tail gas can reach 99.6%. The method has the advantages of wide linear range, low detection limit and small relative standard deviation, and can meet the national requirements for detection of the lead ions in the automobile tail gas.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a lead ion adsorption material in automobile tail gas, a preparation method and an application thereof. Background technique [0002] Lead is a common heavy metal environmental pollutant, and the main sources of lead pollution include automobile exhaust. Lead poisoning mainly manifests as mental retardation, unresponsiveness, anemia and other symptoms. High concentrations of lead can also cause damage to children's spinal cord motor cells, resulting in impaired motor function. Therefore, it is extremely important to establish a trace and ultra-trace lead ion analysis technology, which has practical value for the analysis, determination and recovery of lead ion content in automobile exhaust. [0003] The main detection methods of lead include atomic absorption spectrometry, X-ray fluorescence spectrometry, oscillographic polarography, inductively coupled plasma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/28B01D53/02
CPCB01D53/02B01D2257/60B01D2258/0283B01J20/28016B01J20/3028
Inventor 卢昶雨邓月华高翔李娅妮袁婧李慧玲刘一靖张诗萌
Owner 河北地质大学
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