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Binary manganese and titanium-loaded nanozeolite composite catalytic material and application thereof

A nano-zeolite and catalytic material technology, applied in the direction of nanotechnology, nanotechnology, catalyst carrier, etc., can solve problems such as unsatisfactory effects, and achieve the effects of good practicability, simple preparation method, and improved degradation efficiency

Active Publication Date: 2018-10-09
NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, physical and chemical methods, biochemical methods and combined processes all have their shortcomings and cannot achieve satisfactory results.

Method used

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  • Binary manganese and titanium-loaded nanozeolite composite catalytic material and application thereof
  • Binary manganese and titanium-loaded nanozeolite composite catalytic material and application thereof
  • Binary manganese and titanium-loaded nanozeolite composite catalytic material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of a manganese, titanium binary loaded nano zeolite composite catalytic material, comprising the following steps:

[0023] 1) Add sodium silicate and sodium metaaluminate to 5.5mol / L NaOH solution, wherein the addition amount of sodium silicate is 22g of sodium silicate per liter of NaOH solution, and the addition amount of sodium metaaluminate is per liter of NaOH Add 8 g of sodium metaaluminate to the solution. Stir well, let it stand, and then add propylene bis[dodecyl dimethyl ammonium chloride] to the solution, and the amount of addition is propylene bis [dodecyl dimethyl ammonium chloride] per liter of NaOH solution Ammonium chloride] was 0.053g, and reacted under hydrothermal conditions, the reaction conditions were temperature 75°C, humidity 100%, and reaction time 4.5h.

[0024] 2) Centrifuge the mixture after the reaction is completed, and use pure water and methanol to carry out several centrifugal washings on the reactant, then dry the ...

Embodiment 2

[0034] A preparation method of a manganese, titanium binary loaded nano zeolite composite catalytic material, comprising the following steps:

[0035] 1) Add sodium silicate and sodium metaaluminate to 6.5mol / L NAOH solution, wherein the addition of sodium silicate is 27g of sodium silicate per liter of NaOH solution, and the addition of sodium metaaluminate is per liter of NaoH 10 g of sodium metaaluminate was added to the solution. Stir well, let it stand, and then add propylene bis[dodecyl dimethyl ammonium chloride] to the solution, and the amount of addition is propylene bis [dodecyl dimethyl ammonium chloride] per liter of NaOH solution Ammonium chloride] was 0.065g, and the reaction was carried out under hydrothermal conditions, and the reaction conditions were temperature 85°C, humidity 100%, and reaction time 5.5h.

[0036] 2) After the reaction is completed, the mixture is centrifuged, and the reactant is centrifugally washed several times with pure water and methan...

Embodiment 3

[0045] A preparation method of a manganese, titanium binary loaded nano zeolite composite catalytic material, comprising the following steps:

[0046] 1) Add sodium silicate and sodium metaaluminate to a strong 7.5mol / L NAOH solution, wherein the amount of sodium silicate added is 31g of sodium silicate per liter of NaOH solution, and the amount of sodium metaaluminate added is NaoH solution was added sodium metaaluminate 12g. Stir well, let it stand, and then add propylene bis[dodecyl dimethyl ammonium chloride] to the solution, and the amount of addition is propylene bis [dodecyl dimethyl ammonium chloride] per liter of NaOH solution Ammonium chloride] was 0.080g, and the reaction was carried out under hydrothermal conditions, and the reaction conditions were a temperature of 90°C, a humidity of 100%, and a reaction time of 6.5h.

[0047] 2) After the reaction is completed, the mixture is centrifuged, and the reactant is centrifugally washed several times with pure water an...

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Abstract

The invention discloses a binary manganese and titanium-loaded nanozeolite composite catalytic material and the application thereof. The preparation method comprises the following steps: firstly, preparing a nanozeolite material, then placing the nanozeolite material in a mixed solution of manganese nitrate and butyl titanate, performing a hydrothermal reaction in a reaction kettle, and finally calcinating to obtain the catalytic material. The obtained binary manganese and titanium-loaded nanozeolite composite catalytic material is especially suitable for treatment to pharmaceutical wastewater; tests show that the degradation efficiency is obviously improved; the wet oxidation degradation effect on CODc is more than 44% higher than that when the catalytic material is not added under the same condition, and the photodegradation effect on TOC is more than 43% higher than that when the catalytic material is not added under the same condition, so that the binary manganese and titanium-loaded nanozeolite composite catalytic material has very good practicality.

Description

technical field [0001] The invention belongs to the field of catalytic wet oxidation catalyst materials, in particular to a manganese and titanium binary loaded nano-zeolite composite catalytic material suitable for catalytic wet oxidation of pharmaceutical wastewater. Background technique [0002] The types of pollutants in pharmaceutical wastewater are complex, and there are many types and high concentrations of organic substances, which are highly toxic to organisms. In addition, pharmaceutical wastewater has the characteristics of high salt content and strong acidity, which poses a serious threat to the ecological environment and human health. It is one of the difficult-to-treat high-concentration organic wastewater, and its treatment issues have received widespread attention at home and abroad. Conventional treatment methods for pharmaceutical wastewater include physical and chemical methods, biochemical methods, combined processes, and advanced oxidation technologies. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/076B01J32/00B01J37/10B82Y30/00B82Y40/00C02F1/72C02F103/34
CPCB82Y30/00B82Y40/00C02F1/725B01J29/076B01J37/0018B01J37/10C02F2305/10C02F2103/343B01J2229/18B01J35/39
Inventor 张晓程婷王津南
Owner NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST