Supported catalyst based on fiber carrier, preparation method thereof and indoor air purification device

A technology for supporting catalysts and carriers, which is applied in the field of catalyst preparation, can solve the problems of difficulty in meeting actual production needs, reduced mechanical properties, and high technical costs, and achieve the effects of promoting bonding, high loading capacity, and firm bonding

Pending Publication Date: 2021-08-24
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, it has been reported that the MnO 2 and activated carbon particles loaded on the fiber cloth to prepare the air purification board, but the binder will cover part of the active components of the nanoparticles, inhibiting its catalytic activity
It is also reported that the SnO 2 Powder and sulfur nanoparticles were added to the electrospinning solution, and the prepared fiber membrane was cured and infiltrated into the CS 2 solution, followed by high-temperature carbonization to obtain SnO 2-x /C nanofibers, SnO 2-x Nanoparticles are highly dispersed in carbon fiber with proper void space, but the SnO in this nanofiber 2-x The nanoparticles are

Method used

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  • Supported catalyst based on fiber carrier, preparation method thereof and indoor air purification device
  • Supported catalyst based on fiber carrier, preparation method thereof and indoor air purification device
  • Supported catalyst based on fiber carrier, preparation method thereof and indoor air purification device

Examples

Experimental program
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Example Embodiment

[0028] In order to solve the problems present in the above prior art, embodiments of the present invention provide a method of preparation of a load catalyst based on a fiber carrier, including the following steps:

[0029] The fiber carrier is placed in the stirring device, and the active ingredient is added thereto, and a mechanical stirring is performed after each addition, and the active ingredient is loaded on the fiber vector;

[0030] The single mechanical stirring process is: stirring speed 500RAD / min ~ 1500RAD / min, stirring power 0.5kW ~ 2.5 kW, during stirring, each mixing 5S ~ 12S is paused once, the pause time is 3s ~ 10s, the total stirring time is 20s ~ 50S, the temperature in the stirring device was maintained at 25 ° C to 80 ° C;

[0031] Among them, the active ingredient is a metal nanoparticle or a metal oxide nanoparticle.

[0032]The method of producing a fiber-carrier-based load catalyst provided, relies on the heat generated by a particular mechanical agi...

Example Embodiment

[0050] Example 1

[0051] (1) Weigh 2G diameter of 7 μm, 0.3 g of manganese dioxide (MnO) 2 Nanoparticles, in the mixer, the agitator power is 1.5 kW, and the rotational speed is 1500 ARAD / min. Start the stirring device 5S, after the intermittent 3s, start again. This operation was repeated 4 times and completed the first mechanical agitation. After the stirring was completed, the temperature in the stirring device was 55 ° C.

[0052] (2) Unscrew the mixer cover, add 0.3g MnO 2 Nanoparticles, the mixer is started again, and the second mechanical stirring is performed, the same, the mixer power and the speed of the mixer are unchanged, the stirring device 5S is activated, and the intermittent 3S is started again, and then started again, repeated 4 times. After the stirring was completed, the temperature in the stirring device was 55 ° C.

[0053] (3) Repeat step (2), performing third mechanical stirring, get MNO 2 @ 聚 酯 fiber catalyst. After the stirring was completed, the tempe...

Example Embodiment

[0056] Example 2

[0057] (1) Weigh 3G diameter of 30 μm, 0.8 g of tetrashydoxide (CO) 3 O 4 Nanoparticles, in the mixer, the mixer power is 1 kW, and the rotational speed is 1200RAD / min. Start the stirring device 10s, and then start it again. This operation repeated 5 times and completed the first mechanical stirring. After the stirring was completed, the temperature in the stirring device was 60 ° C.

[0058] (2) Unscrew the mixer cover, add 0.8g CO 3 O 4 Nanoparticles, the mixer is activated again, and the second mechanical stirring is carried out, the mixing machine is the same, the mixer power and the rotational speed are unchanged, the stirring device 10s is activated, and the intermittent 5S is started again, and then started again, repeated 5 times. After the stirring was completed, the temperature in the stirring device was 60 ° C.

[0059] (3) Repeat step (2) 3 times, performing third mechanical agitation, fourth mechanical agitation and fifth machinery, resulting in C...

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Abstract

The invention relates to a preparation method of a supported catalyst based on a fiber carrier, which comprises the following steps of placing the fiber carrier in a stirring device, adding active ingredients by several times, and carrying out mechanical stirring once after each time of adding so as to load the active ingredients on the fiber carrier. The single mechanical stirring process is as follows: the stirring rotating speed is 500 rad/min-1500 rad/min, the stirring power is 0.5 kW-2. 5kW, in the stirring process, the stirring is paused for each 5 s-12 s, the pause time is 3 s-15 s, the total stirring time is 20 s-50 s, the temperature in a stirring device is kept at 25 DEG C-80 DEG C, and the active component is metal nanoparticles or metal oxide nanoparticles. The invention also relates to the supported catalyst prepared by the preparation method. The invention further relates to an indoor air purification device.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a fiber carrier-based loaded catalyst, a preparation method thereof, and an indoor air purification device. Background technique [0002] Various volatile organic pollutants (Volatile organic compounds, VOCs) such as formaldehyde and benzene series emitted by building materials, paints, furniture, etc. have caused serious harm to human health. At present, catalytic decomposition technology is considered to be a relatively effective and mature way to purify indoor pollutant gases due to its advantages of low energy consumption, energy saving, environmental protection, high efficiency and stability. Commonly used catalysts include noble metal catalysts and transition metal oxide catalysts, such as Pt, Au, Ag 2 O, MnO 2 、TiO 2 , Fe 2 o 3 , CeO 2 、Co 3 o 4 Wait. Because such catalysts exist in the form of particles, they cannot be used directly in practical appl...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J23/34B01J23/75B01J31/06B01J35/06B01D53/86B01D53/70B01D53/62B01D53/44
CPCB01J31/069B01J23/34B01J21/063B01J23/75B01J35/0013B01J35/06B01D53/8668B01D53/8671B01D53/8687B01D2258/06B01D2257/504B01D2257/704B01D2257/708
Inventor 张彭义屈永帅
Owner TSINGHUA UNIV
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