Preparation method and application of honeycomb ceramic/biochar film/rare earth perovskite monolithic catalyst

A monolithic catalyst and honeycomb ceramic technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to promote adsorption, inhibit aggregation, and inhibit grain growth big effect

Pending Publication Date: 2022-01-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the use of it as a complexing agent to support perovskite catalysts on honeycomb supports

Method used

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  • Preparation method and application of honeycomb ceramic/biochar film/rare earth perovskite monolithic catalyst
  • Preparation method and application of honeycomb ceramic/biochar film/rare earth perovskite monolithic catalyst
  • Preparation method and application of honeycomb ceramic/biochar film/rare earth perovskite monolithic catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The pomegranate peel is washed, dried, and ground to obtain the pomegranate peel powder. Weigh 4.33g of lanthanum nitrate and 4.04g of ferric nitrate and dissolve them in 100mL of deionized water, add 1.0g of pomegranate peel powder, stir in a water bath at 80°C, keep warm for 3h, add ammonia water dropwise to adjust the pH value to neutral, and impregnate the honeycomb ceramics in the obtained suspension. Put it in the turbid liquid for 2 hours, dry it after purging, put it in a muffle furnace at 400°C for 2 hours, and get the finished honeycomb ceramic / biological carbon film / LaFeO 3 .

[0033] Without affecting the overall structure of the honeycomb ceramics, scrape off the powder from the surface of the honeycomb ceramics, and perform an X-ray powder diffraction experiment on the sample, and at the same time observe the morphology and structure of the coated honeycomb ceramics under a microscope, according to the example The LaFeO prepared by the process parameters ...

Embodiment 2

[0039] The pomegranate peel is washed, dried, and ground to obtain the pomegranate peel powder. Weigh 4.33g of lanthanum nitrate and 2.91g of cobalt nitrate and dissolve them in 100mL of deionized water, add 1.5g of pomegranate peel powder, stir in a water bath at 60°C, keep warm for 4h, add ammonia water dropwise to adjust the pH value to neutral, and impregnate the honeycomb ceramics in the obtained suspension. Put it in the turbid liquid for 2 hours, dry it after purging, put it in a muffle furnace at 400°C for 3 hours, and get the finished honeycomb ceramic / biological carbon film / LaCoO 3 .

[0040] Test LaCoO through embodiment 1 method 3 / Biological carbon film / Honeycomb ceramic composite T 90 It is 309°C.

Embodiment 3

[0042] The pomegranate peel is washed, dried, and ground to obtain the pomegranate peel powder. Weigh 4.33g of lanthanum nitrate and 2.50g of manganese nitrate and dissolve them in 100mL of deionized water, add 2g of pomegranate peel powder, stir in a water bath at 90°C, keep warm for 4 hours, add ammonia water dropwise to adjust the pH value to neutral, and impregnate the honeycomb ceramics in the obtained suspension solution for 4 hours, purged and then dried, then placed in a muffle furnace at 400°C for 4 hours to obtain the finished honeycomb ceramic / biological carbon film / LaMnO 3 .

[0043] Test LaMnO through embodiment 1 method 3 / Biological carbon film / Honeycomb ceramic composite T 90 It is 302°C.

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Abstract

The invention belongs to the field of environmental protection, and particularly relates to a honeycomb ceramic/biochar film/rare earth perovskite monolithic catalyst and a preparation method and application thereof. Agricultural and forestry waste biomass is utilized to form a biochar film second carrier layer on the surface of honeycomb ceramic, and perovskite oxide is indirectly coated on a honeycomb ceramic carrier to form the monolithic catalyst; on one hand, the specific surface area of the carrier is favorably increased, and more attachment sites are provided for the active component; on the other hand, the effect of fixing the active components can be achieved, the effect of inhibiting aggregation and grain growth of the active components is facilitated, meanwhile, part of carbon elements are doped into crystal lattices of perovskite, defects are caused, and the low-temperature catalytic oxidation activity of the catalyst is improved. Moreover, the biochar is developed in pore structure, and has a large number of defects and unsaturated bonds on the surface. Oxygen and other heteroatoms are easily adsorbed on the defects to form a plurality of functional groups such as carboxyl, anhydride and carbonyl, so that the catalytic oxidation degradation of VOCs (Volatile Organic Compounds) is promoted.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a honeycomb ceramic / biological carbon film / rare earth perovskite integral catalyst and a preparation method and application thereof. Background technique [0002] With the rapid development of petrochemical, spraying, shoemaking and printing industries, the emissions of volatile organic compounds (VOCs) represented by aromatic hydrocarbons are gradually increasing, posing a great threat to the environment, animal and plant growth, and human health. . Catalytic oxidation has become a research hotspot in the current organic waste gas treatment industry because of its high purification rate, no secondary pollution, and low energy consumption, and the preparation of cheap and efficient catalysts is the core of catalytic oxidation technology. [0003] The honeycomb monolithic catalyst is the most common application in the field of environmental protection. It consi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/34B01J35/10B01J35/04B01D53/86B01D53/72
CPCB01J23/83B01J23/34B01J35/1004B01J35/04B01D53/8668
Inventor 李霞章黄杰姚超左士祥刘经纬高丙莹王灿
Owner CHANGZHOU UNIV
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