Preparation method of acrylic fiber immobilized DABCO catalyst and application thereof
A technology of acrylic fiber and catalyst, which is applied in the field of preparation of acrylic fiber immobilized DABCO catalyst, can solve problems such as unsatisfactory catalytic activity, complicated preparation process, and loss of catalytic sites, and achieve potential industrial application value, simple preparation process and low cost. low effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] The preparation method of the acrylic fiber immobilized DABCO catalyst of the present embodiment is as follows:
[0028] (1) Dissolve triethylenediamine (11.22g, 0.1mol) in ethyl acetate (200mL) with stirring at room temperature, then add methyl bromoacetate (8.68g, 0.08mol) dropwise, and stir the reaction at room temperature 24h. The reacted mixture was suction-filtered to obtain a white solid, which was then washed with anhydrous ether and dried overnight to obtain a bromide-containing DABCO derivative. The reaction process is as follows:
[0029]
[0030] (2) A total of 30 mL of ethylenediamine and water (volume ratio 1:2) were added to a 50 mL flask, and 1.0 g of dried acrylic fiber was added, and refluxed for 3 h under electromagnetic stirring. Then the fibers were taken out, filtered with suction, and washed with deionized water at 50-60° C. until the pH of the filtrate=7. After vacuum drying (60° C.) overnight, light yellow ethylenediamine functionalized acr...
Embodiment 2
[0038] The preparation method of the acrylic fiber immobilized DABCO catalyst of the present embodiment is as follows:
[0039] (1) Dissolve triethylenediamine (11.22g, 0.1mol) in ethyl acetate (200mL) with stirring at room temperature, then add methyl chloroacetate (8.68g, 0.08mol) dropwise, and stir the reaction at room temperature 24h. The reacted mixture was suction filtered to obtain a white solid, which was then washed with anhydrous ether and dried overnight to obtain a chloride ion-containing DABCO derivative. The reaction process is as follows:
[0040]
[0041] (2) Ethylenediamine functionalized acrylic fiber PANF-E is synthesized according to the method of Example 1;
[0042] (3) Add 0.5g (1.48mmol / g) dry ethylenediamine aminated fiber, DABCO derivative DABCO-Cl (15eq.), 0.5g anhydrous sodium carbonate, 30ml deionized water into a 50mL flask , reflux reaction for 3h under electromagnetic stirring. Then the fibers are taken out, filtered with suction, and washe...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More