A kind of temperature-sensitive polyoxometalate composite catalyst and its synthesis method
A technology of polyoxometalates and composite catalysts, applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., capable of solving two-phase The mass transfer and heat transfer of the system are hindered, and the catalytic effect is reduced, so as to achieve the effect of repeated utilization
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] A kind of synthetic method of temperature-sensitive polyoxometalate composite catalyst, comprises the following steps:
[0030] (1) Add N-isopropylacrylamide and diallyldimethylammonium chloride with a molar ratio of (2.5-3.5):1 into water, stir to dissolve, and pass non-reactive gas to remove oxygen for more than 30 minutes, so Said non-reactive gas is nitrogen or inert gas;
[0031] (2) Add an initiator, the initiator is potassium persulfate-FeCl 2 4H 2 O or 2-hydroxyl-4'-(2-hydroxyethoxy)-2-methylpropiophenone, the quality of the initiator is 1-2% of the N-isopropylacrylamide quality, stirred until the solution consists of Colorless and viscous, stop stirring, crystallize with saturated sodium chloride solution, and dry at 30-50°C to obtain a temperature-sensitive cationic polymer;
[0032] (3) The temperature-sensitive cationic polymer with a mass ratio of (3-5): 1 and K 8 [BW 11 o 39 H]·13H 2O is made into the temperature-sensitive cationic polymer aqueous s...
Embodiment 2
[0035] A kind of synthetic method of temperature-sensitive polyoxometalate composite catalyst, comprises the following steps:
[0036] (1) Weigh 2.1g of N-isopropylacrylamide (molecular weight 113.16) and 1.0g of diallyldimethylammonium chloride (molecular weight 161.67) into a 25mL round bottom flask, add 15mL of water, Stir to dissolve, and deoxygenate with nitrogen for 30 minutes;
[0037] (2) Weigh 0.016g of potassium persulfate and 0.016g of FeCl 2 4H 2 Dissolve O in 0.5mL water, pour it into a round bottom flask with a syringe, stir in an ice-water bath until the solution becomes viscous, stop stirring, add saturated sodium chloride solution to precipitate a white solid, and dry the white solid at 40°C Dry thermosensitive cationic polymer;
[0038] (3) Weigh 2g of temperature-sensitive cationic polymer and dissolve it in 38mL of water to make an aqueous solution of cationic polymer with a mass fraction of 5%, and weigh 0.5g of K 8 [BW 11 o 39 H]·13H 2 O was dissol...
Embodiment 3
[0041] A kind of synthetic method of temperature-sensitive polyoxometalate composite catalyst, comprises the following steps:
[0042] (1) Weigh 1.75g of N-isopropylacrylamide and 1.0g of diallyldimethylammonium chloride into a 25mL round-bottomed flask, add 15mL of water, stir to dissolve, and argon to remove oxygen 40min;
[0043] (2) Weigh 0.018g of 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone and dissolve it in 0.6mL of water, put it into a round bottom flask with a syringe, and put it under the irradiation of ultraviolet light Stir until the solution becomes viscous, stop stirring, add saturated sodium chloride solution to precipitate a white solid, and dry the white solid at 35°C to obtain a temperature-sensitive cationic polymer;
[0044] (3) Weigh 1.5g of temperature-sensitive cationic polymer and dissolve it in 23.5mL of water to make an aqueous solution of cationic polymer with a mass fraction of 6%, and weigh 0.5g of K 8 [BW 11 o 39 H]·13H 2 O was dis...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More