Amino resin modified nitrogen-doped activated carbon catalyst as well as preparation method and application thereof
Amino resin modification, amino resin technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, hydrogen halide addition preparation, etc., can solve the problems of complicated procedures, unsuitable for industrial production, and high cost, and achieve environmental friendliness, Conducive to industrial promotion and application, the effect of high decomposition temperature
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Embodiment 1
[0026] A nitrogen-doped activated carbon catalyst modified by amino resin is prepared by loading amino resin on activated carbon, drying and carbonizing. Its preparation method is:
[0027] 1) Preparation of amino resin impregnation solution: Dilute 0.9mL formaldehyde solution (commercially available, 37-40% mass fraction, the same below) to 10mL, adjust the pH to 9.6 with triethanolamine, add 0.5g melamine, heat to 65°C in a water bath, and react 1h to obtain amino resin impregnation solution; the molar ratio of the aldehyde compound to the amino compound is 3:1.
[0028] 2) Equal-volume impregnation: Add the amino resin impregnating solution in step 1) to 10 g of coconut shell activated carbon and mix, stir evenly, heat at 60°C for 12 hours, and dry at 125°C to obtain a catalyst precursor.
[0029] 3) Carbonization: the catalyst precursor is heated to 550°C at a heating rate of 2-5°C / min under the protection of nitrogen in an atmosphere furnace, and kept for 4 hours.
[00...
Embodiment 2
[0032] An amino resin-modified nitrogen-doped activated carbon catalyst is prepared by loading amino resin on activated carbon, drying and carbonizing. Its preparation method is:
[0033] 1) Preparation of amino resin impregnation solution: dilute 1.8mL formaldehyde solution to 10mL, adjust pH to 9.6 with triethanolamine, add 0.5g melamine, heat to 65°C in water bath and stir to dissolve to obtain amino resin impregnation solution; the aldehyde compound and amino compound The molar ratio is 6:1.
[0034] 2) Equal-volume impregnation: Add the impregnating solution in step 1) dropwise to 10 g of coconut shell activated carbon, stir evenly, heat at 60° C. for 12 hours, and dry at 125° C. to obtain a catalyst precursor.
[0035] 3) Carbonization: the catalyst precursor is heated to 550°C at a heating rate of 2-5°C / min under the protection of nitrogen in an atmosphere furnace, and kept for 4 hours.
[0036]The amino resin modified nitrogen-doped activated carbon catalyst is used ...
Embodiment 3
[0038] An amino resin-modified nitrogen-doped activated carbon catalyst is prepared by loading amino resin on activated carbon, drying and carbonizing. Its preparation method is:
[0039] 1) Preparation of amino resin impregnation solution: dilute 1.8mL formaldehyde solution to 10mL, adjust pH to 9.5 with triethanolamine, add 1g of melamine, heat in water bath to 65-70°C and stir to dissolve to obtain impregnation solution; the mole ratio of the aldehyde compound and amino compound The ratio is 3:1.
[0040] 2) Equal-volume impregnation: Add the impregnating solution in step 1) dropwise to 10 g of coconut shell activated carbon, stir evenly, keep warm at 60° C. for 16 hours, and dry at 125° C. to obtain a catalyst precursor.
[0041] 3) Carbonization: the catalyst precursor is heated to 550°C at a heating rate of 2-5°C / min under the protection of nitrogen in an atmosphere furnace, and kept for 4 hours.
[0042] The amino resin modified nitrogen-doped activated carbon catalys...
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