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Integral mesoporous carbon supported iron oxide catalyst and preparation method thereof

A technology of iron oxide and mesoporous carbon, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. The nanostructure of the loaded material is difficult to control, etc., to achieve the effect of uniform size, good size dispersion and high stability

Active Publication Date: 2018-01-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the pore structure of the carrier material in the above-mentioned prior art is relatively complex, so it is difficult to control the nanostructure of the loaded substance, especially the problem that the size is difficult to control

Method used

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  • Integral mesoporous carbon supported iron oxide catalyst and preparation method thereof
  • Integral mesoporous carbon supported iron oxide catalyst and preparation method thereof
  • Integral mesoporous carbon supported iron oxide catalyst and preparation method thereof

Examples

Experimental program
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Effect test

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

The invention provides an integral mesoporous carbon supported iron oxide catalyst and a preparation method thereof. The preparation method comprises the following steps: acidizing an integral mesoporous carbon material, then, carrying out purification and drying to obtain an acidized integral mesoporous carbon material; after preparing a water solution from the acidized integral mesoporous carbonmaterial, mixing the water solution with an iron precursor, then, adding a precipitant, and carrying out a reaction in shielding gas at 10-40 DEG C for 2-10h to obtain a crude product; and after washing the crude product, carrying out vacuum drying to obtain the integral mesoporous carbon supported iron oxide catalyst, wherein the usage amount of the iron precursor is measured by iron substancescontained in the iron precursor, and the molar ratio of the iron precursor to the integral mesoporous carbon material is (0.01-1):1. The invention further provides the integral mesoporous carbon supported iron oxide catalyst prepared by using the preparation method.

Description

technical field [0001] The invention belongs to the technical field of nanometer catalysts, and relates to a monolithic mesoporous carbon-supported iron oxide catalyst and a preparation method thereof. Background technique [0002] Iron oxides, such as ferroferric oxide, are low in cost and have excellent physical and chemical properties, so they have important applications in magnetic storage materials, microwave absorption, special coatings, drug targeting guidance, catalysts, and bioengineering. Currently, methods for preparing nano-iron oxides mainly include physical methods and chemical methods (Chem. Eur. J., 2006, 12, 6341). The physical method generally uses ball milling to pulverize the whole material into nanoparticles. The method is simple and easy to operate; however, the prepared nanoparticles generally have low purity and uneven particle distribution, and sometimes the requirements for the preparation equipment are particularly high. The important thing is that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J35/10
Inventor 李鑫恒吴丽琼
Owner PETROCHINA CO LTD