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Nano-composite material catalyst, preparation method, and application thereof

A nano-composite material and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of inability to achieve adsorption and catalytic removal, failure to achieve nano-scale contact, and ozone carbon material erosion. , to achieve the effect of small air resistance, easy control and long-lasting purification function

Inactive Publication Date: 2018-04-06
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis process of the above-mentioned catalysts is complicated and the preparation period is long. The nanoscale contact between the synthesized activated carbon and the manganese oxide cannot be achieved, and the efficient adsorption and catalytic removal cannot be achieved. The synthesis process consumes more raw materials and cannot be catalyzed. Oxidizes a large amount of volatile organic compounds, which is not conducive to industrial applications
At the same time, manganese oxides are mostly loaded on the adsorbent in the form of nanoparticles, which may lead to the erosion of ozone on carbon materials.

Method used

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  • Nano-composite material catalyst, preparation method, and application thereof
  • Nano-composite material catalyst, preparation method, and application thereof

Examples

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Embodiment 1

[0031] This embodiment relates to a simultaneous removal of ozone, VOCs and / or s-VOCs with MnO x The preparation method of the catalyst that is catalytically active component:

[0032] Step 1, weigh 0.15 g of hydrothermally treated activated carbon or porous carbon nanospheres and ultrasonically disperse them in 50 mL of deionized water, figure 1 It is a schematic diagram of the TEM characterization of the hydrothermally treated porous carbon nanospheres;

[0033] Step 2, weigh 0.125gKMnO 4 , MnSO 4 , Mn(NO 3 ) 2 , MnCl 2 or Mn(Ac) 2 Ultrasonic dispersion in 50 mL deionized water, the KMnO 4 , MnSO 4 , Mn(NO 3 ) 2 , MnCl 2 or Mn(Ac) 2 The solution is slowly added to the hydrothermally treated activated carbon or porous carbon nanosphere solution, and magnetically stirred for 1 hour;

[0034] Step 3, the mixed solution after magnetic stirring for 1 hour is washed and dried to obtain a nanocomposite catalyst, figure 2 That is KMnO 4 C@MnO Prepared by Reaction wit...

Embodiment 2

[0043] This embodiment relates to a simultaneous removal of ozone, VOCs and / or s-VOCs with MnO x The preparation method of the catalyst that is catalytically active component:

[0044] Step 1: Weigh 0.15 g of hydrothermally treated activated carbon or porous carbon nanospheres and ultrasonically disperse them in 50 mL of deionized water;

[0045] Step 2, weigh 0.125gKMnO 4 , MnSO 4 , Mn(NO 3 ) 2 , MnCl 2 or Mn(Ac) 2 Ultrasonic dispersion in 50 mL deionized water, the KMnO 4 , MnSO 4 , Mn(NO 3 ) 2 , MnCl 2 or Mn(Ac) 2 The solution is slowly added to the hydrothermally treated activated carbon or porous carbon nanosphere solution, the porous ceramic plate is placed in it, and magnetically stirred for 1 hour;

[0046] In step 3, the porous ceramic plate is taken out, washed and dried to obtain a supported catalyst.

[0047] Implementation effect: the above C@MnO x / The porous ceramic plate-supported catalyst is placed in a wind tunnel with a cross-sectional flow ve...

Embodiment 3

[0053] This embodiment relates to a simultaneous removal of ozone, VOCs and / or s-VOCs with MnO x -NiO x The preparation method of the catalyst that is catalytically active component:

[0054] Step 1: Weigh 0.15 g of hydrothermally treated activated carbon or porous carbon nanospheres and ultrasonically disperse them in 50 mL of deionized water;

[0055] Step 2, weigh 0.125gKMnO 4 , MnSO 4 , Mn(NO 3 ) 2 , MnCl 2 or Mn(Ac) 2 Ultrasonic dispersion in 50 mL deionized water, the KMnO 4 The solution is slowly added to the hydrothermally treated activated carbon or porous carbon nanosphere solution, and magnetically stirred for 1 hour;

[0056] Step 3, weigh 0.23gNi(NO 3 ) 2 Ultrasonic dispersion in 50mL deionized water;

[0057] Step 4, Ni(NO 3 ) 2 The solution was added thereto and stirred for 3h;

[0058] In step five, the mixed solution is washed and dried to obtain a nanocomposite catalyst.

[0059] Implementation effect: 0.1g of the above C@MnO x -NiO x The nan...

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Abstract

The invention provides a nano-composite material catalyst which is composed of a supporter and a catalytic active component that is immobilized in the supporter, wherein the supporter is activated charcoal or porous carbon nano-spheres that are processed hydrothermally. The catalytic active component is a manganese oxide or is a manganese oxide doped with metal oxides comprising at least one oxideof metal elements of: Fe, Co, Ni, Co, Zn, Al, Ce and Sn. The preparation process of the catalyst is simple and is easy to control, and has short production period. The supporter has large surface area, strong adsorption performance and low gas-resistance. When being supported, the catalytic active component is not liable to fall off, so that the catalyst has high-effective, continuous and durablepurification functions to volatile and semi-volatile organic substances, such as formaldehyde, benzene, phthalate and the like, in indoor air.

Description

technical field [0001] The invention relates to a nanocomposite catalyst capable of simultaneously removing ozone, VOCs and / or s-VOCs and a preparation method thereof, belonging to the technical field of environmental catalysis. Background technique [0002] Due to the development of modern industry, the increase of car ownership, modern living environment and interior decoration, etc., a large amount of volatile organic compounds are emitted into the air. However, some additives added to materials, hygienic insecticides, and semi-volatile organic compounds produced by incomplete combustion are more difficult to degrade in the environment than volatile organic compounds due to their large molecular weight, high boiling point, and low saturated vapor pressure. It also exists for a longer period of time. These substances not only cause damage to the atmospheric environment, but also directly endanger human health and life safety. The technologies currently used for organic w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/889B01D53/86
CPCB01D53/8668B01D53/8675B01D2257/708B01D2258/06B01J23/34B01J23/8892
Inventor 江治王红超
Owner SHANGHAI JIAO TONG UNIV
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