Synthetic method of polyaniline

A synthesis method and polyaniline technology are applied in the field of inexpensive and environmentally friendly synthesis of polyaniline, can solve the problem of high synthesis cost, and achieve the effects of satisfying industrial production, shortening the initiation latency period, and reducing production costs.

CN109824891AInactive Publication Date: 2019-05-31扬州大学广陵学院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of polyaniline, in particular to a low-price environmental-friendly synthetic technique of polyaniline. The synthetic technique herein comprises mixing a mixed solution of aniline and hydrochloric acid and a saline solution with ferrous ions, and adding hydrogen peroxide solution to obtain a mixed system; introducing air to the mixed system, and allowing to react under stirring; washing with reacted solid with water, and drying to obtain polyaniline. The method herein can provide low-price green synthesis of polyaniline; filtrate and washing water are reused for synthesis of polyaniline during synthesis, no environmental pollution is caused, wastewater treatment cost is avoided, and polyaniline production cost is greatly reduced.
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Description

technical field

[0001] The invention relates to the production technical field of polyaniline, in particular to the cheap and environment-friendly synthesis technology of polyaniline. technical background

[0002] With the increasing demand for energy and the continuous improvement of social and economic sustainable development, green energy with high performance and low cost has attracted more and more attention.

[0003] Zinc-polyaniline (Zn-PANI) aqueous solution secondary batteries have been reported and have made major breakthroughs. However, one of the problems encountered with the Zn-PANI aqueous solution secondary battery is that the polyaniline used in the battery is very expensive. The high price of polyaniline is mainly due to the high price of persulfate (such as ammonium persulfate) used in the production process of the oxidant and the high cost of synthetic waste liquid treatment. Therefore, although the Zn-PANI aqueous solution secondary battery has many adv...

Examples

Embodiment 1

[0020] Mix hydrochloric acid, aniline and water, and prepare 1.0 L of a mixed aqueous solution of aniline and hydrochloric acid with a hydrochloric acid concentration of 1.5 mol / L and aniline concentration of 0.2 mol / L in a reactor.

[0021] Then add ferrous chloride aqueous solution to the reactor under stirring, then slowly add hydrogen peroxide to the reactor under stirring until the concentration of ferrous chloride in the mixed system reaches 10 -5 mol / L, the concentration of hydrogen peroxide reaches 3×10 -2 mol / L. Then, 1.0 L / min air was bubbled into the mixed aqueous solution of aniline and hydrochloric acid to carry out the polymerization reaction of aniline. Air was introduced to react for about 6 hours, and then the reaction solution was dried with a dryer to obtain the solid phase after the reaction, washed with a small amount of water, then dried, and dried at 80°C for 48 hours to obtain the polyaniline product.

Embodiment 2

[0023] Mix hydrochloric acid, aniline and water, and prepare 1.0L of a mixed aqueous solution of aniline and hydrochloric acid in a reactor with a hydrochloric acid concentration of 1.0 mol / L and an aniline concentration of 0.5 mol / L.

[0024] Then add ferrous sulfate aqueous solution to the reactor under stirring, then slowly add hydrogen peroxide to the reactor under stirring until the concentration of ferrous sulfate in the mixed system reaches 10 -5 mol / L, the concentration of hydrogen peroxide reaches 3×10 -2 mol / L. Then, 2.0 L / min air was bubbled into the mixed aqueous solution of aniline and hydrochloric acid to carry out the polymerization reaction of aniline. Air was introduced to react for about 8 hours, and then the reaction solution was dried with a dryer to obtain a solid phase after reaction, which was washed with a small amount of water, then dried, and dried at 80°C for 48 hours to obtain polyaniline products.

[0025] two, figure 1 For adopting the polyan...