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
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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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