A kind of phenylhydroxy anion functionalized ionic liquid antioxidant and preparation method thereof
An ionic liquid and antioxidant technology, which is applied in the preparation of amino hydroxyl compounds, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of general antioxidant effect and poor oil solubility of antioxidants, and achieve great development significance and Value, the effect of improving oil solubility
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Embodiment 1
[0024] The phenylhydroxy anion functionalized ionic liquid antioxidant comprises an alkylimidazole gallate ionic liquid antioxidant composed of an alkylimidazolium cation and a gallic acid anion. Wherein the alkylimidazolium cation is 1-ethylimidazolium cation.
[0025] The phenylhydroxy anion functionalized ionic liquid antioxidant comprises the following steps:
[0026] Step 1. Preparation of alkylimidazolium cation chlorine salt aqueous solution: add hydrochloric acid aqueous solution (add 20mL deionized water to 10g, 0.1mol concentrated hydrochloric acid) into 0.1mol alkylimidazole (1-ethylimidazolium cation), and heat Stirring under the bath for 6h, the mol ratio of hydrochloric acid in alkylimidazole and hydrochloric acid aqueous solution is 1:1, obtains alkylimidazole cation chloride salt solution;
[0027] Step 2. Preparation of potassium gallate aqueous solution: add 0.1mol gallic acid monohydrate to 100mL deionized water, heat and stir in an oil bath at 80°C until c...
Embodiment 2
[0033] The phenylhydroxy anion functionalized ionic liquid antioxidant comprises an alkylimidazole gallate ionic liquid antioxidant composed of an alkylimidazolium cation and a gallic acid anion. Wherein the alkylimidazolium cation is 1-methylimidazolium cation.
[0034] The phenylhydroxy anion functionalized ionic liquid antioxidant comprises the following steps:
[0035] Step 1. Preparation of alkylimidazolium cation chlorine salt aqueous solution: add hydrochloric acid aqueous solution to 0.1mol alkylimidazole (1-methylimidazolium cation) (add 20mL deionized water to 10g, 0.1mol concentrated hydrochloric acid), and heat Stir in the bath for 6h, the molar ratio of hydrochloric acid in the alkylimidazole and hydrochloric acid aqueous solution is 1:1, obtain the alkylimidazole cation chloride salt solution;
[0036] Step 2. Preparation of potassium gallate aqueous solution: add 0.1mol gallic acid monohydrate to 100mL deionized water, heat and stir in an oil bath at 80°C until...
Embodiment 3
[0041] The phenylhydroxy anion functionalized ionic liquid antioxidant comprises choline gallate ionic liquid antioxidant composed of choline cation and gallic acid anion.
[0042] The phenylhydroxy anion functionalized ionic liquid antioxidant comprises the following steps:
[0043] Step 1. Add 18.8g of gallic acid monohydrate (0.1mol) into 100mL of deionized water, heat and stir in an oil bath at 80°C until completely dissolved, and obtain an aqueous solution of gallic acid;
[0044] Step 2. Add 10 mL of choline aqueous solution (concentration of choline aqueous solution is 0.01mol / mL) to the aqueous solution of gallic acid obtained in step 1 and mix, heat and stir in an oil bath at 80°C for 24 hours, wherein gallic acid monohydrate in the aqueous solution of gallic acid With the choline molar ratio in the choline aqueous solution is 1:1, obtains the mixed product;
[0045] Step 3. Rotary evaporation of the mixed product obtained in step 2 to remove water to obtain choline ...
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