Method for removing phenol in aqueous solution with magnetic mesoporous carbon material
An aqueous solution, mesoporous carbon technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of small specific surface area and pore volume of activated carbon, small pore size of activated carbon, and limited adsorption capacity of adsorbate, etc. Achieving good recycling effect, good adsorption performance and strong dispersibility
Inactive Publication Date: 2011-12-21
SHANGHAI UNIV
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Problems solved by technology
First of all, the pore size of activated carbon is small, mostly in the range of micropores, it is difficult to load macromolecular catalysts and adsorb macromolecular catalysts.
Secondly, the specific surface area and pore volume of traditional activated carbon are small, and the adsorption capacity of adsorbate is limited.
At the same time, in some cases, the small pore size and pore volume of activated carbon are not conducive to the mass transfer of liquids and gases to a certain extent, thus hindering the progress of catalytic reactions.
In addition, because carbon powder is not easy to separate in water, it will increase additional costs when it is used in wastewater treatment
Method used
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Embodiment 1
[0015] Embodiment one: Fe 3 o 4 The loading is achieved by using the metal precursor Fe(NO 3 ) 3 It is achieved by impregnating CMK-3 in an aqueous solution, drying it with ethylene glycol as a reducing agent, and roasting it in an inert atmosphere at a certain temperature. Dissolve 5g with 1.44g Fe(NO 3 ) 3 9H 2 The aqueous solution of O and 1g CMK-3 are fully mixed, first baked at 350K for 15h, then baked at 520K in an inert atmosphere (nitrogen) for 2h, and cooled naturally to obtain the magnetic mesoporous material Fe 3 o 4 / CMK-3. In terms of mass fraction of Fe, Fe 3 o 4 / CMK-3 has a loading of catalyst of 20%.
[0016] load Fe 3 o 4 later, by the attached figure 1 It can be seen that Fe 3 o 4 In the XRD curve of / CMK-3, the diffraction peaks belonging to the (100) plane broaden and their intensity decreases, indicating that the magnetic particles have entered the pores of CMK-3. Nitrogen adsorption tests showed that Fe 3 o 4 / The specific surface area...
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Abstract
The invention relates to a method for absorbing and catalyzing phenol in aqueous solution with mesoporous carbon CMK-3 of load magnetic Fe3O4 particles, which belongs to the technical field of catalyst loading and application. The method takes the mesoporous carbon material CMK-3 as a carrier, takes magnetic active metal oxide Fe3O4 as a load object and takes glycol as reducer, loads the Fe3O4 particles into a mesoporous channel of the mesoporous carbon CMK-3, and synchronizes Fe3O4 / CMK-3 which has absorption, catalysis and oxidation functions to the phenol in aqueous solution. The Fe3O4 / CMK-3 is characterized by easy separation from water, has good absorption, catalysis and oxidation effect to the phenol in aqueous solution, has better reusability, and has the absorption capability to the phenol in the water still up to 52mg / g after being reused for 15 times. The method has potential actual application prospect.
Description
technical field [0001] The invention relates to a method for removing phenol in an aqueous solution by using a magnetic mesoporous carbon material, and belongs to the field of catalyst loading and application. Background technique [0002] In 1999, Ryoo et al first synthesized the ordered mesoporous carbon material CMK-1 using the mesoporous silica material MCM-48 as the template and sucrose as the carbon source. This is an important breakthrough in the history of the development of porous carbon materials. Ordered mesoporous carbon materials usually have high specific surface area, adjustable pore size, interconnected channels and modifiable surface properties. , magnetism and many other fields have broad application prospects. In the traditional field of catalyst application, it is a hot topic to use activated carbon to immobilize discrete catalysts, use the adsorption properties of activated carbon to enrich the catalytic substance, and then achieve the purpose of catal...
Claims
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IPC IPC(8): B01J20/20C02F1/28C02F1/72C02F1/58C02F101/34
Inventor 胡龙兴党松涛
Owner SHANGHAI UNIV