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Method for treating nitro aromatic hydrocarbon substances by using carbon black limited nanogold catalyst

A technology of nitroaromatic hydrocarbons and nano-gold, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve resource waste, easy precipitation, and reuse Poor performance and other problems, to achieve the effect of reducing processing costs, accelerating mass transfer process, and promoting catalytic efficiency

Inactive Publication Date: 2020-04-03
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, due to the problems of colloidal gold nanoparticles such as easy aggregation, poor catalytic activity, difficulty in recycling and reuse, and easy waste of resources, researchers have tried to load nano-gold colloids on suitable carriers to improve the stability of nano-gold and promote Recycling of Gold Catalysts
However, the existing supported nano-gold catalysts still have problems such as poor stability, poor catalytic activity, and poor reusability. Effective fixation of nano-gold particles makes the supported nano-gold catalyst susceptible to external factors, resulting in insufficient stability and failure to obtain better catalytic activity and reusability

Method used

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  • Method for treating nitro aromatic hydrocarbon substances by using carbon black limited nanogold catalyst
  • Method for treating nitro aromatic hydrocarbon substances by using carbon black limited nanogold catalyst
  • Method for treating nitro aromatic hydrocarbon substances by using carbon black limited nanogold catalyst

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Embodiment 1

[0044] A method for treating nitroaromatics by using a carbon black-limited nano-gold catalyst, specifically using carbon black-limited nano-gold catalysts with different nano-gold particle contents to treat 4-nitrophenol (4-NP) in water , including the following steps:

[0045] Carbon black-confined nano-gold catalyst (CB / Au (1) , CB / Au (2) , CB / Au (3) , CB / Au (4) , CB / Au (5) ), 10 mg each, were added to 50 mL of 4-nitrophenol (4-NP) solution with a concentration of 0.5 mM, stirred for 30 min, and the adsorption equilibrium was reached, and 0.1 g NaBH was added 4 Solid, after fully mixed, carry out catalytic reduction reaction for 30 minutes, and complete the treatment of 4-nitrophenol.

[0046] In the present embodiment, the used carbon black-limited nano-gold catalyst (CB / Au (1) ), including carbon black and nano-gold particles, wherein the nano-gold particles are fixed on the inside and surface of the carbon black, wherein the nano-gold particles are fixed in the por...

Embodiment 2

[0071] A method for treating nitroaromatic substances using a carbon black-limited nano-gold catalyst, specifically using a carbon black-limited nano-gold catalyst to separately treat 2-nitrophenol (2-NP), 3-nitro Phenol (3-NP), 2,4-nitrophenol (2,4-DNP), Congo red (CR), methyl orange (MO) and chrome black T (EBT), including the following steps:

[0072] Get the carbon black limited type nano-gold catalyst (CB / Au) prepared in embodiment 1 (3)), 10 mg each, were added to 50 mL of 2-nitrophenol (2-NP) solution, 3-nitrophenol (3-NP) solution, 2,4-nitrophenol (2,4 -DNP) solution, Congo red (CR) solution, methyl orange (MO) solution and chrome black T (EBT) solution, stirred for 30min, reached adsorption equilibrium, each added 0.1g NaBH 4 Solid, fully mixed for catalytic reduction reaction, including 2-nitrophenol (2-NP) solution, 3-nitrophenol (3-NP) solution, 2,4-nitrophenol (2,4-DNP) solution , Congo red (CR) solution, methyl orange (MO) solution and chrome black T (EBT) solu...

Embodiment 3

[0076] A method for processing nitroaromatic hydrocarbons using a carbon black-limited nano-gold catalyst, specifically using a carbon black-limited nano-gold catalyst to process 4-nitrophenol (4-NP) in water, comprising the following steps:

[0077] (1) get the carbon black limited type nano-gold catalyst (CB / Au) prepared in 10mg embodiment 1 (3) ), was added to 50mL of 4-nitrophenol (4-NP) solution with a concentration of 0.5mM, stirred for 30min, and the adsorption equilibrium was reached, and 0.1g NaBH was added 4 Solid, after mixing thoroughly, carry out catalytic reduction reaction for 5 minutes.

[0078] (2) After the reaction in step (1) is completed, the solution after the reaction is filtered, and the solid matter (carbon black-limited nano-gold catalyst) is washed with ultrapure water and sewage ethanol, dried, and the dried solid The substance (carbon black-limited nano-gold catalyst) was repeatedly treated with the 4-nitrophenol (4-NP) solution according to the m...

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Abstract

The invention discloses a method for treating nitro aromatic hydrocarbon substances by using a carbon black limited nanogold catalyst. According to the method, nitro aromatic hydrocarbon substances are treated by using a carbon black limited nanogold catalyst, wherein the carbon black limited nanogold catalyst comprises carbon black and nanogold particles, and the nanogold particles are fixed in the carbon black and on the surface of the carbon black. The invention relates to a method for treating nitro aromatic hydrocarbon substances by using a carbon black limited nanogold catalyst, whereinthe method can realize effective degradation of nitro aromatic hydrocarbon substances, has the advantages of simple operation, rapid reaction, stable and easily-recycled catalyst, economy and the like, can be widely applied to treatment of nitro aromatic hydrocarbon substances, and has good application value and application prospect.

Description

technical field [0001] The invention belongs to the field of reduction treatment of nitro aromatic hydrocarbons, and relates to a method for treating nitro aromatic hydrocarbons, in particular to a method for treating nitro aromatic hydrocarbons with a carbon black-limited nano-gold catalyst. Background technique [0002] Nitroaromatic hydrocarbons refer to molecules containing multiple benzene rings, one or more hydrogen atoms in the hydrocarbon molecule are replaced by nitro (-NO 2 ) Substituted nitro compounds, such as 2-nitrophenol, 4-nitrophenol, 2,4-nitrophenol, azo dyes, etc. They are the main chemical raw materials in the production of chemical industry, widely used in pesticide production, printing and dyeing industry, explosives, medicine and so on. About 10,000 tons and 30,000 tons of aniline and nitrobenzene compounds are discharged into the environment every year in the world. With the development of the chemical industry, the demand for such chemicals is grad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/52B82Y30/00B82Y40/00C02F1/70C02F101/38
CPCB01J23/52B82Y30/00B82Y40/00C02F1/70C02F2101/38
Inventor 曾光明秦蕾赖萃符玉葵黄丹莲张辰程敏曾毅周成赟王晗文晓凤柳诗语
Owner HUNAN UNIV
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