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Bone carbon supported catalyst as well as preparation method and application thereof

A supported catalyst and bone carbon technology, which is applied in the field of bone carbon supported catalyst and its preparation, can solve the problems of being unsuitable for the bone carbon supported catalyst, endangering people's life and property safety, unfavorable for manganese oxide dispersion, and the like. The effect of operational safety, reduction of governance costs, and reduction of equipment operating costs

Active Publication Date: 2022-01-18
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, since the working temperature window for the combined removal of toluene and formaldehyde by thermocatalytic oxidation is generally higher than 180 °C, the risk of heat accumulation and ignition is prone to occur when using the above carbon-based carrier catalysts for thermocatalytic oxidation, which may endanger Personnel life and property safety
[0004] Prior art CN 110841588 B discloses that an animal bone from which organic matter has been removed is calcined at 550-650°C for 3-5 hours; as shown in the accompanying drawings, the crystal form of the XRD pattern is obviously stronger; the main body of the hydroxyapatite crystal is The type is relatively large, that is, it is not conducive to the full incorporation of manganese oxide into the hydroxyapatite lattice, and the promotion of the oxygen species activity of hydroxyapatite; it is also not conducive to the dispersion of manganese oxide on the bone carbon carrier, so it is not suitable for use for the preparation of bone carbon-supported catalysts
The prior art CN107096492 A discloses that animal bones are used as raw materials, which are crushed and calcined at 600-700°C for 1-2 hours; similarly, the hydroxyapatite crystal form of the bone carbon body calcined in the patent CN107096492 A is relatively larger, Therefore it is also not suitable for the preparation of bone carbon supported catalyst by the method of the present invention

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  • Bone carbon supported catalyst as well as preparation method and application thereof
  • Bone carbon supported catalyst as well as preparation method and application thereof
  • Bone carbon supported catalyst as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0064] A bone carbon-supported catalyst for efficiently removing toluene and formaldehyde, the main active component of the bone carbon-supported catalyst is Mn metal oxide, and the supports are respectively calcined at 530-550°C and 730-750°C For the bone carbon, the calcination atmosphere is air, and the mass percentage of Mn metal oxide in the bone carbon supported catalyst is 12-16%.

[0065] The preparation method of the bone carbon supported catalyst is oleic acid assisted equal volume impregnation, oleic acid: manganese nitrate=1mol:1mol, and its preparation process includes the following steps:

[0066] S1. Wash 10 g of degummed and degreased bovine bone repeatedly with deionized water to remove surface impurities, and then place it in an oven for heating and drying at 100-110°C for 12 hours;

[0067] S2. Heat up the dried degummed and degreased bovine bone under air conditions at a rate of 2°C / min for 6 hours at 530-550°C and 730-750°C for 6 hours to obtain two bone c...

Embodiment 2

[0076] A bone carbon-supported catalyst for efficiently removing toluene and formaldehyde, the main active component of the bone carbon-supported catalyst is Mn metal oxide, and the carrier is bone calcined at 530-550°C and 730-750°C carbon, the calcination atmosphere is air, and the mass percentage of Mn metal oxide in the bone carbon-supported catalyst is 12-16%.

[0077] The preparation method of the bone carbon supported catalyst is equal-volume impregnation, and its preparation process includes the following steps:

[0078] S1. Wash 10 g of degummed and degreased bovine bone repeatedly with deionized water to remove surface impurities, and then place it in an oven for heating and drying at 100-110°C for 12 hours;

[0079] S2. Heat the dried degummed and degreased bovine bone under air condition at 2°C / min to 530-550°C and 730-750°C for 6 hours to form two kinds of bone charcoal; grind and screen the bone charcoal to 40-60 meshes, and use The bone carbon was repeatedly wa...

Embodiment 3

[0085] A bone carbon-supported catalyst for efficiently removing toluene and formaldehyde, the main active component of the bone carbon-supported catalyst is Mn metal oxide, the carrier is bone carbon calcined at 530-550 °C, and the calcination atmosphere is Air, and the mass percentages of Mn metal oxide in the bone carbon supported catalyst in the bone carbon supported catalyst are 8-12% and 16-20% respectively.

[0086] The preparation method of the bone carbon supported catalyst is oleic acid assisted equal volume impregnation, oleic acid: manganese nitrate=1mol:1mol, and its preparation process includes the following steps:

[0087] S1. Wash 10 g of degummed and degreased bovine bone repeatedly with deionized water to remove surface impurities, and then place it in an oven for heating and drying at 100-110°C for 12 hours;

[0088] S2. Heat up the dried degummed and degreased bovine bone under air condition at 2°C / min to 530-550°C for 6 hours to form bone carbon; grind and...

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Abstract

The invention belongs to the technical field of waste gas treatment, and relates to a bone carbon supported catalyst as well as a preparation method and application thereof. The preparation method of the bone carbon supported catalyst comprises the following steps of: heating an animal bone to 500-550 DEG C under an air condition at a heating speed of 2-10 DEG C / min, and calcining for 6 hours to form bone carbon; impregnating the bone carbon in a manganese salt / saturated fatty acid solution according to a ratio of the bone carbon to the impregnating solution of 1g: 1.2 ml by adopting equivalent-volume impregnation, stirring for 10-15 minutes, aging for 4-8 hours, drying, heating to 350-400 DEG C at a speed of 2 DEG C / min, and calcining for 4-5 hours to obtain the bone carbon supported catalyst. The bone carbon sample can realize combined high-efficiency removal of toluene and formaldehyde at 250-310 DEG C, has excellent continuous activity and water resistance, can be recycled for multiple times through transient thermal regeneration, and has no safety risk of fire caused by thermal storage.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and relates to the purification treatment of VOCs, in particular to a bone carbon-loaded catalyst capable of efficiently and jointly removing toluene and formaldehyde, as well as its preparation method and application. Background technique [0002] In recent years, my country has achieved remarkable results in the control of organized waste gas emissions, and the collection and treatment of unorganized waste gas in industrial production will become the next important governance goal. In furniture production and processing, indoor building materials production and other industries, due to the use of solvents and adhesives in the production process, there are a large number of VOCs in the workshop air, and the air pollution caused by the workshop working environment and the surrounding area environment cannot be ignored. Among them, toluene and formaldehyde are two types of VOCs that ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/187B01J35/02B01J23/34B01D53/86B01D53/72B01J35/00
CPCB01J27/187B01J23/34B01D53/8668B01J35/40Y02A50/20
Inventor 李彩亭杨匡杜雪雨朱有才李珊红赵骏刚
Owner HUNAN UNIV