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A nitrogen-doped ordered mesoporous carbon catalytic material and its preparation method and application

A catalytic material and mesoporous carbon technology, which is applied in chemical instruments and methods, carbon preparation/purification, separation methods, etc., can solve problems such as difficult industrial production, high synthesis technology requirements, and complicated preparation methods of mesoporous carbon materials. It achieves the effects of improving surface alkalinity, broad application prospects, and simple and green preparation process

Inactive Publication Date: 2021-03-30
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method of mesoporous carbon materials is complicated, the synthesis technology requirements are high, and it is difficult to realize industrial production

Method used

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  • A nitrogen-doped ordered mesoporous carbon catalytic material and its preparation method and application
  • A nitrogen-doped ordered mesoporous carbon catalytic material and its preparation method and application
  • A nitrogen-doped ordered mesoporous carbon catalytic material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh 2g of P123, 0.4g of m-aminophenol and 0.6g of terephthalaldehyde and grind them evenly in a mortar, transfer the above solid mixture into a 100ml autoclave, perform hydrothermal treatment at 150°C for 12h, then cool naturally at room temperature, grind finely, Roast to remove the template, pre-oxidize in air atmosphere at 250°C for 2 hours, rapidly carbonize at 700°C in nitrogen atmosphere for 15 minutes, etch and carbonize in KOH at 700°C in nitrogen atmosphere for 2 hours, neutralize with hydrochloric acid, wash with water until neutral drying to obtain the final product nitrogen-containing medium Pore ​​carbon N-OMC, and named N-OMC-700.

Embodiment 2

[0045] Embodiment 2 (best embodiment)

[0046] Weigh 2g of F127, 0.4g of m-aminophenol and 0.6g of terephthalaldehyde and grind them evenly in a mortar, transfer the above solid mixture into a 100ml autoclave, perform hydrothermal treatment at 150°C for 12h, cool naturally at room temperature, and grind finely. Roast to remove the template, pre-oxidize in air atmosphere at 250°C for 2 hours, rapidly carbonize at 800°C in nitrogen atmosphere for 15 minutes, etch and carbonize in KOH at 800°C in nitrogen atmosphere for 2 hours, neutralize with hydrochloric acid, wash with water until neutral drying to obtain the final product nitrogen-containing media Porous carbon N-OMC, and named N-OMC-800.

Embodiment 3

[0048] Weigh 2g of F108, 0.4g of m-aminophenol and 0.6g of terephthalaldehyde and grind them evenly in a mortar, transfer the above solid mixture into a 100ml autoclave, perform hydrothermal treatment at 150°C for 12h, then cool naturally at room temperature, grind finely, Roasting to remove the template, pre-oxidation in air atmosphere at 250°C for 2 hours, rapid carbonization at 900°C in nitrogen atmosphere for 15 minutes, etching and carbonization in KOH at 900°C in nitrogen atmosphere for 2 hours, neutralization with hydrochloric acid, washing with water until neutral drying to obtain the final product nitrogen-containing medium Pore ​​carbon N-OMC, and named N-OMC-900.

[0049] Characterization analysis is carried out to the product that embodiment 1-3 makes:

[0050] 1) N 2 Physical adsorption: The specific surface area and pore size of the sample were measured at liquid nitrogen temperature (77K) using the ASAP2020 analyzer from Micrometric Company of the United States...

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Abstract

The invention discloses a nitrogen-doped ordered mesoporous carbon catalytic material, a preparation method and application thereof. The preparation method comprises the specific steps of: 1) preparation of an ordered mesoporous carbon polymer; 2) pre-oxidation; 3) rapid carbonization: transferring a pre-oxidation sample into a tubular furnace with the temperature of 700-900 DEG C, and carbonizingfor 15 minutes under the inert atmosphere; 4) KOH etching carbonization: mixing the rapidly-carbonized sample and KOH according to the mass ratio of 1:1, roasting for 2 hours in the tubular furnace under the inert atmosphere at the temperature of 700-900 DEG C, naturally cooling, neutralizing with 1M HCl solution, then washing to be neutral, and drying for 8-12 hours at the temperature of 60 DEGC to obtain the nitrogen-doped ordered mesoporous carbon catalytic material. The nitrogen-doped ordered mesoporous carbon N-OMP has a body-centered cubic mesoscopic structure and shows good catalyticactivity and selectivity in the aspect of selective catalytic oxidation of H2S.

Description

technical field [0001] The invention relates to a preparation technology of an environmental catalyst and its application field, in particular to a nitrogen-doped ordered mesoporous carbon catalytic material and its preparation method and application. Background technique [0002] due to H 2 S is a toxic pollutant and can damage the environment, so in the past few decades, H from refinery crude oil and natural gas industry 2 Sulfur recovery from S has attracted considerable attention. Currently the most commonly used technology is the Claus sulfur recovery process, which recovers elemental sulfur from sulfur-containing gases. Most Claus processes use H 2 S, CO 2 and H 2 O as the main component, with N 2 , NH 3 and hydrocarbons as the second component. Due to the thermodynamic limitation of the Claus equilibrium reaction, about 4% H still exists in the exhausted tail gas 2 S. To further remove residual H 2 S, people have developed the H 2 The technology of selecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01D53/86B01D53/52C01B17/04C01B32/05
CPCB01D53/8612B01D2255/702B01J27/24C01B17/0426
Inventor 刘福建米金星沈丽娟曹彦宁江莉龙
Owner FUZHOU UNIV
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