A monolithic mesoporous carbon-supported iron oxide catalyst and preparation method thereof
An iron oxide, mesoporous carbon technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. The nanostructure of the supported material is difficult to control and other problems, to achieve the effect of uniform size, good size dispersion and high stability
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Embodiment 1
[0060] This example provides a monolithic mesoporous carbon supported Fe 3 o 4 The preparation method of catalyst, it comprises the following steps:
[0061] Take 30mg of the monolithic mesoporous carbon material prepared in the laboratory, add dilute nitric acid with a mass fraction of 30% to ultrasonically disperse for 0.5h, and then stir and soak at 60°C for 3h for acidification;
[0062] The acidified monolithic mesoporous carbon material was centrifuged, washed to neutrality, and the sample was dried at 120°C for 12 hours to obtain a dried acidified monolithic mesoporous carbon material;
[0063] Take 30 mg of dried acidified monolithic mesoporous carbon material, add 30 ml of ultrapure water, and ultrasonicate for 30 minutes to prepare an aqueous solution with a mass concentration of 0.1%, and then add 20 mg of FeCl 2 4H 2 O and 30 mg anhydrous FeCl 3 , and then pass nitrogen gas through ventilation treatment, stir for 10 minutes, then add 0.5ml of 10% ammonia water ...
Embodiment 2
[0075] This embodiment provides a monolithic macroporous mesoporous carbon loaded Fe 3 o 4 The preparation method of catalyst, it comprises the following steps:
[0076] Take 30 mg of monolithic macroporous mesoporous carbon material prepared by using biomass templates as a carrier, add dilute nitric acid with a mass fraction of 20% for ultrasonic dispersion for 1 h, and then stir and soak at 60 ° C for 1 h for acidification treatment;
[0077] The acidified monolithic macroporous mesoporous carbon material was centrifuged, washed to neutrality, and the sample was dried at 120° C. for 12 hours to obtain a dried acidified monolithic macroporous mesoporous carbon material;
[0078] Take 30 mg of dried monolithic macroporous mesoporous carbon material after acidification treatment, add 30 ml of ultrapure water, and ultrasonicate for 30 min to prepare an aqueous solution with a mass concentration of 0.1%, and then add 20 mg of FeCl 2 4H 2 O and 30 mg anhydrous FeCl 3 , and the...
Embodiment 3
[0084] This example provides a monolithic mesoporous carbon supported Fe 2 o 3 The preparation method of catalyst, it comprises the following steps:
[0085] Take 30mg of the monolithic mesoporous carbon material prepared in the laboratory, add dilute nitric acid with a mass fraction of 30% to ultrasonically disperse for 0.5h, and then stir and soak at 60°C for 1h for acidification;
[0086] The acidified monolithic mesoporous carbon material was centrifuged, washed to neutrality, and the sample was dried at 120°C for 12 hours to obtain a dried acidified monolithic mesoporous carbon material;
[0087] Take 30 mg of dried acidified monolithic mesoporous carbon material, add 30 ml of ultrapure water, ultrasonicate for 30 min, and prepare an aqueous solution with a mass concentration of 0.1%, and then add 30 mg of FeCl 2 4H 2 O, then pass nitrogen gas through ventilation treatment, stir for 10min, then add 0.2ml volume concentration of 10% ammonia water, and react for 4h at no...
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Abstract
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