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Transition metal and nitrogen-co-doped carbon composite for formaldehyde purification and preparation method of composite

A technology of carbon composite materials and transition metals, applied in chemical instruments and methods, catalyst activation/preparation, separation methods, etc., to achieve the effect of overcoming harsh conditions, low cost, and large specific surface area

Inactive Publication Date: 2018-07-27
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the problems of existing formaldehyde purification catalysts and provide a non-precious metal, novel high-efficiency and low-cost formaldehyde purification catalyst

Method used

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  • Transition metal and nitrogen-co-doped carbon composite for formaldehyde purification and preparation method of composite
  • Transition metal and nitrogen-co-doped carbon composite for formaldehyde purification and preparation method of composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Preparation of transition metal and nitrogen co-doped carbon composite

[0020] Mix 0.45 g of cobalt nitrate solid, 5 g of dimethylimidazole solid and 50 ml of water, heat and stir at 40°C for 10 h, then wash and vacuum dry to obtain a solid powder. The prepared solid powder in N 2 The transition metal and nitrogen co-doped carbon composites were obtained by calcining at 300 ℃ for 4 h under atmosphere.

Embodiment 2

[0021] Example 2 Preparation of transition metal and nitrogen co-doped carbon composite

[0022] Mix 0.9 g of cobalt nitrate solid, 11 g of dimethylimidazole solid, and 100 ml of water, stir at 60°C for 30 h, wash with methanol, and dry in vacuo to obtain a solid powder. The prepared solid powder was calcined at 500°C for 5 h under Ar atmosphere to obtain transition metal and nitrogen co-doped carbon composites.

Embodiment 3

[0023] Example 3 Preparation of transition metal and nitrogen co-doped carbon composite

[0024] Mix 0.9 g of cobalt nitrate solid, 16 g of dimethylimidazole solid and 150 ml of water, heat and stir at 70°C for 2 h, then wash and vacuum dry to obtain a solid powder. The prepared solid powder in N 2 Calcined at 600°C for 6h under atmosphere to obtain transition metal and nitrogen co-doped carbon composite.

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Abstract

The invention discloses a transition metal and nitrogen-co-doped carbon composite for formaldehyde purification and a preparation method of the composite. The composite comprises a non-metal active component and a nitrogen-doped carbon carrier, wherein the non-metal active component is transition metal salt which is one or more of nickel salt, cobalt salt, iron salt and manganese salt. The transition metal and nitrogen-co-doped carbon composite for formaldehyde purification has a large specific surface area and high formaldehyde adsorption and catalytic purification capability, overcomes severe conditions (such as very high catalysis temperature and the like) required by conventional transition metal oxides for catalytic oxidation of formaldehyde and has the characteristics of low cost, high catalysis efficiency at the room temperature, long service life and the like.

Description

technical field [0001] The present invention relates to the technical field of transition metal catalysts, and more specifically, to a transition metal and nitrogen co-doped carbon composite material for purifying formaldehyde and a preparation method thereof. Background technique [0002] With the continuous improvement of the social and economic level, people have higher and higher requirements for the home environment. However, most furniture and building materials will slowly release organic pollutants that endanger human health during use due to imperfect production processes. One of the most important pollutants is formaldehyde. Under high concentration conditions, formaldehyde can cause major diseases such as nasopharyngeal cancer. Long-term exposure to low-concentration formaldehyde can irritate the eyes and upper respiratory tract, and also cause symptoms such as dry and cracked skin. In view of the great harm of formaldehyde to human health, a large number of sci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/08B01D53/86B01D53/72
CPCB01D53/8668B01J27/24B01J37/082B01D2257/704B01D2257/708B01J37/084B01D2255/65B01D2255/20746B01D2255/2073B01D2255/20753B01D2255/20738B01D2255/702B01J2235/30B01D2255/2065B01J21/18B01J23/10B01J23/34B01J23/745B01J23/75B01J23/755B01J37/04B01J37/088
Inventor 纪红兵丁俊杰吕品田刘逸朗芮泽宝
Owner SUN YAT SEN UNIV
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