Carbide derived carbon adsorbent for removing low-concentration low-molecular-weight VOCs (volatile organic compounds) as well as preparation method of adsorbent

A technology of carbide-derived carbon and volatile organic compounds, applied in separation methods, chemical instruments and methods, and other chemical processes, can solve problems such as poor adsorption capacity, and achieve long service life, excellent adsorption performance, and large adsorption capacity. Effect

Inactive Publication Date: 2014-06-18
山东航源环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the shortcomings of traditional activated carbon purification treatment of low-concentration and low-molecular-weight organic matter in buildings and closed cabins, the present invention provides a method that can efficiently adsorb and separate large-molecular-weight volatile organic compounds and efficiently adsorb and separate low-concentration and low-molecular-weight volatile organic compounds. Adsorbent for sexual organic matter and preparation method thereof

Method used

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  • Carbide derived carbon adsorbent for removing low-concentration low-molecular-weight VOCs (volatile organic compounds) as well as preparation method of adsorbent
  • Carbide derived carbon adsorbent for removing low-concentration low-molecular-weight VOCs (volatile organic compounds) as well as preparation method of adsorbent
  • Carbide derived carbon adsorbent for removing low-concentration low-molecular-weight VOCs (volatile organic compounds) as well as preparation method of adsorbent

Examples

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Effect test

Embodiment 1

[0015] Heat 4g of TiC to 700°C in an inert atmosphere, and then change to chlorine gas (30ml / min) for 2 hours for high-temperature etching. Then, cool to room temperature with inert gas again to obtain the primary product. Add 1 g of the resulting primary product to 10 ml of an oxidative solution HNO with a molar concentration of 5 mol / L 3 Immersion treatment at medium room temperature for 12 hours. Then, wash with deionized water until neutral, and dry at 105° C. for 8 hours to obtain the adsorbent of Example 1.

Embodiment 2

[0017] Heat 4gVC to 600°C in an inert atmosphere, and then change to chlorine gas (40ml / min) for 4 hours for high-temperature etching. Then, cool to room temperature with inert gas again to obtain the primary product. Add 1g of the resulting primary product to 10ml of 5% oxidizing solution H 2 o 2 Dipping treatment at medium room temperature for 6 hours. Then, wash with deionized water until neutral, and dry at 105° C. for 5 hours to obtain the adsorbent of Example 2.

Embodiment 3

[0019] 4gTiC was heated up to 800°C in an inert atmosphere, and then chlorine gas (30ml / min) was used for 2 hours for high-temperature etching. Then, cool to room temperature with inert gas again to obtain the primary product. Add 1 g of the resulting primary product to 10 ml of an oxidative solution HNO with a molar concentration of 9 mol / L 3 Immersion treatment at medium room temperature for 12 hours. Then, wash with deionized water until neutral, and dry at 105° C. for 8 hours to obtain the adsorbent of Example 3.

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Abstract

The invention discloses a carbide derived carbon adsorbent for removing low-concentration low-molecular-weight VOCs (volatile organic compounds) as well as a preparation method of the adsorbent, and belongs to the technical field of gas purification treatment technique. The preparation method comprises the following steps: firstly, heating commercial carbide in an inert atmosphere to 600-900 DEG C, and then introducing chlorine for 2-4 hours and etching at high temperature at the flow rate of 30-50ml/min; then introducing inert atmosphere again and cooling down to room temperature so as to obtain the primary carbide derived carbon product; then adding the carbide derived carbon primary product to an oxidizing solution and performing immersion treatment for 6-12 hours; and then washing by deionized water to be neutral, and drying at 105 DEG C for 3-8 hours, thereby obtaining the finished carbide derived carbon adsorbent product. Compared with existing commercial activated carbon, the adsorbent designed by the invention can efficiently adsorb low-concentration low-molecular-weight VOCs at high air speed, is high in adsorption capacity, has long service life, and is suitable for air purification treatment in rooms of buildings, airtight cabins and other limited spaces.

Description

technical field [0001] The invention relates to an adsorbent and a preparation method thereof, in particular to an adsorbent for adsorption and purification of low-concentration and low-molecular-weight volatile organic matter at room temperature and a preparation method thereof, belonging to the technical field of gas purification treatment. Background technique [0002] In recent years, the seriousness of indoor air pollution has aroused people's attention day by day. On the one hand, with the improvement of the airtightness of buildings, the difference between indoor and outdoor air quality is getting bigger and bigger. On the other hand, with the rapid development of science and technology, technical equipment such as aircraft cockpits, manned spacecraft, submarines, vehicles and ships, underground fortifications, special chemical workshops, and special laboratories are becoming more and more important in the life of human civilization. The people in the interior of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
Inventor 朱天乐王红妍纳宏波
Owner 山东航源环境科技有限公司
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