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Preparation method of catalytic composite material Mn3O4/ZIF-8 (Zeolite Imidazate Framework-8) for activating PMS (Potassium Monopersulfate)

A technology of ZIF-8, zinc nitrate hexahydrate, used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc.

Active Publication Date: 2017-02-22
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] After searching, it was not found that potassium permanganate, ethanol and ZIF-8 were used as raw materials to prepare the catalytic composite material Mn 3 o 4 Patent applications and literature reports on the method of ZIF-8

Method used

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  • Preparation method of catalytic composite material Mn3O4/ZIF-8 (Zeolite Imidazate Framework-8) for activating PMS (Potassium Monopersulfate)
  • Preparation method of catalytic composite material Mn3O4/ZIF-8 (Zeolite Imidazate Framework-8) for activating PMS (Potassium Monopersulfate)
  • Preparation method of catalytic composite material Mn3O4/ZIF-8 (Zeolite Imidazate Framework-8) for activating PMS (Potassium Monopersulfate)

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Embodiment 1

[0027] The concrete steps of this embodiment are as follows:

[0028] The catalytic composite material Mn of novel activation PMS of the present invention 3 o 4 The preparation method of / ZIF-8, this method is to be raw material with zinc nitrate hexahydrate, MIM, sodium formate dihydrate, DMF, potassium permanganate, adopts colloid chemical synthesis method and solvothermal method to prepare Mn 3 o 4 / ZIF-8 composite. Its technological process is: the Zn(NO of weighing 29.5 mmol 3 ) 2 •6H 2 Dissolve O in 50 mL of DMF and magnetically stir at room temperature until completely dissolved; weigh 88.4 mmol of HCOONa 2H 2 O and 117.9 mmol of MIM were dissolved in 25 mL of DMF, stirred magnetically at room temperature until uniformly dispersed; the two mixtures were mixed, stirred magnetically at room temperature for 4 hours until the reaction was complete, and washed by centrifugation, secondary water and anhydrous methanol After 5-6 times of drying at 60°C for 10 hours, the...

Embodiment 2

[0031] The concrete steps of this embodiment are as follows:

[0032] The catalytic composite material Mn of novel activation PMS of the present invention 3 o 4 The preparation method of / ZIF-8, this method is to be raw material with zinc nitrate hexahydrate, MIM, sodium formate dihydrate, DMF, potassium permanganate, adopts colloid chemical synthesis method and solvothermal method to prepare Mn 3 o 4 / ZIF-8 composite. Its technological process is: the Zn(NO of weighing 29.5 mmol 3 ) 2 •6H 2 Dissolve O in 50 mL of DMF and magnetically stir at room temperature until completely dissolved; weigh 88.4 mmol of HCOONa 2H 2 O and 117.9 mmol of MIM were dissolved in 25 mL of DMF, stirred magnetically at room temperature until uniformly dispersed; the two mixtures were mixed, stirred magnetically at room temperature for 4 hours until the reaction was complete, and centrifuged, secondary water and anhydrous methanol The product ZIF-8 was obtained after washing 5-6 times and dryin...

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Abstract

The invention relates to a preparation method of a catalytic composite material Mn3O4 / ZIF-8 (Zeolite Imidazolate Framework-8) for activating PMS (Potassium Monopersulfate). The method comprises the following steps of first, preparing a ZIF-8 according to the mole ratio, which is 1 to 4 to 3 to 33 of zinc nitrate hexahydrate to 2-methylimidazole to sodium formate dihydrate to N,N-dimethyl formamide; afterwards, weighing to take potassium hypermanganate and the ZIF-8 with corresponding masses respectively according to the mass ratio, which is (0.52 to 1.04) to 1, of the potassium hypermanganate to the ZIF-8, dispersing the ZIF-8 into a 60-percent ethanol solution, sufficiently agitating an obtained first mixture, then adding the potassium hypermanganate into an ethanol solution containing the ZIF-8, sufficiently agitating an obtained second mixture, transferring the agitated second mixture into a reaction kettle, and making the transferred second mixture react for 8 hours at 120 DEG C, so as to obtain the Mn3O4 / ZIF-8 composite material through centrifugation, multiple washing and the drying at 60 DEG C for one night. In the obtained catalytic composite material Mn3O4 / ZIF-8, the ZIF-8 is cauliflower-shaped; Mn3O4 is sheet-shaped, and is evenly distributed on the surface of the ZIF-8. The catalytic composite material has an excellent catalytic effect on the PMS; the degradation rate, on rhodamine B, of the PM aSctivated through the composite material reaches 81 percent to 99 percent.

Description

technical field [0001] The invention relates to a catalytic composite material Mn that can activate potassium monopersulfate compound salt (PMS) 3 o 4 The invention relates to a preparation method of ZIF-8. The material is used to activate PMS to degrade organic pollutants such as rhodamine B, and belongs to the technical field of preparation of catalytic materials. Background technique [0002] Advanced oxidation technology can be broadly defined as an oxidation method based on the in situ generation of a series of highly reactive intermediate species (main but not exclusive) to destroy target pollutants through a certain mechanism. Based on the sulfate radical (SO 4 - •) advanced oxidation technology is an effective method to remove refractory organic pollutants, and has become a research hotspot. The advantages of this technology are that the stability and water solubility of the oxidizing agent are good, there are many ways to activate the oxidizing agent, the applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/32C02F1/00
CPCB01J31/32B01J37/10C02F1/00C02F2101/308
Inventor 胡龙兴邓桂花张雨瑶
Owner SHANGHAI UNIV
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