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Nitrogen-doped non-noble metal catalyst for formaldehyde purification and preparation method of nitrogen-doped non-noble metal catalyst

A non-precious metal and formaldehyde purification technology, applied in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc., to achieve high catalytic efficiency, good catalytic purification ability, and long service life

Active Publication Date: 2019-11-22
武汉绿知行环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the problems of existing formaldehyde purification catalysts, and provides a non-precious metal formaldehyde purification catalyst with simple preparation, no pollution, high efficiency and low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of embodiment 1 nitrogen-doped transition metal catalyst

[0022] Disperse 0.5g of alumina carrier into 20mL of water, stir for a period of time, add 1.5mL of 1M cobalt nitrate solution, heat and stir at 40°C until the solution evaporates to dryness, and then vacuum dry to obtain a solid powder. The prepared solid powder was calcined at 300° C. for 12 h under an ammonia atmosphere to obtain a nitrogen-doped transition metal catalyst.

Embodiment 2

[0023] Embodiment 2 Preparation of nitrogen-doped transition metal catalyst

[0024] Disperse 1 g of alumina carrier into 30 mL of water, stir for a period of time, add 2 mL of 0.5 M cobalt nitrate solution, heat and stir at 60 ° C until the solution evaporates to dryness, and then vacuum dry to obtain a solid powder. The prepared solid powder was calcined at 500° C. for 3 h under an ammonia atmosphere to obtain a nitrogen-doped transition metal catalyst.

Embodiment 3

[0025] Embodiment 3 Preparation of nitrogen-doped transition metal catalyst

[0026] Disperse 1g of alumina carrier into 40mL of water, stir for a period of time, add 2mL of 1M cobalt nitrate solution, heat and stir at 80°C until the solution evaporates to dryness, and then vacuum dry to obtain a solid powder. The prepared solid powder was calcined at 600° C. for 5 h under an ammonia atmosphere to obtain a nitrogen-doped transition metal catalyst.

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PUM

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Abstract

The invention discloses a nitrogen-doped non-noble metal catalyst for formaldehyde purification and a preparation method of the nitrogen-doped non-noble metal catalyst. The nitrogen-doped non-noble metal catalyst consists of a nitrogen-doped non-noble metal (one or more of nickel, cobalt, iron, manganese and cerium) active component and a carrier. The nitrogen-doped non-noble metal catalyst for formaldehyde purification provided by the invention has good catalytic purification capability, avoids the severe conditions (such as very high catalytic temperature and the like) required by catalyticoxidation of formaldehyde by traditional transition metal oxides, and has the characteristics of simple preparation, economy, environmental protection, high catalytic efficiency at room temperature, long service life and the like.

Description

technical field [0001] The present invention relates to the technical field of non-noble metal catalysts, more specifically, to a nitrogen-doped transition metal catalyst for formaldehyde purification and a preparation method thereof. Background technique [0002] The formaldehyde source of indoor decoration air pollution is mainly artificial boards, wallpapers, wall coverings, paints and other decoration materials. Because formaldehyde-containing adhesives such as urea-formaldehyde resins, phenolic resins, and melamine-formaldehyde resins are used in the production process, free formaldehyde will be gradually released from the materials, causing indoor air formaldehyde pollution. Formaldehyde, as a toxic gas, absorbs into the human body and reacts with biological macromolecules, damaging human health. Long-term exposure to formaldehyde above the safe concentration may cause teratogenicity and cancer, and may cause irreversible damage to infants and young children. Therefo...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J29/46B01J37/08B01D53/86B01D53/72
CPCB01J27/24B01J29/46B01J37/082B01D53/8668B01D2258/06
Inventor 丁俊杰原烨李尚
Owner 武汉绿知行环保科技有限公司