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Magnetic nickel-cobalt oxide supported gold catalyst, preparation method and application thereof, and preparation method of 2, 5-furandicarboxylic acid

A technology of nickel cobalt oxide and furandicarboxylic acid, applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problem of many by-products, poor catalyst stability, Problems such as low catalytic activity of catalysts

Active Publication Date: 2021-08-20
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the catalytic activity of the catalyst supported by carbon material gold nanoparticles is low, the selectivity of the product is poor, and the generated by-products are more; the catalytic activity of the hydrotalcite-supported gold catalyst is better, the selectivity of the product is better, but the catalyst Extremely poor stability, difficult to reuse

Method used

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  • Magnetic nickel-cobalt oxide supported gold catalyst, preparation method and application thereof, and preparation method of 2, 5-furandicarboxylic acid
  • Magnetic nickel-cobalt oxide supported gold catalyst, preparation method and application thereof, and preparation method of 2, 5-furandicarboxylic acid
  • Magnetic nickel-cobalt oxide supported gold catalyst, preparation method and application thereof, and preparation method of 2, 5-furandicarboxylic acid

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preparation example Construction

[0048] The present invention provides a method for preparing a magnetic nickel-cobalt oxide-supported gold catalyst described in the above technical solution, comprising the following steps:

[0049] The water-soluble cobalt precursor, the precipitating agent and water are mixed, followed by hydrothermal reaction, first roasting and hydrogen reduction reaction to obtain a zero-valent cobalt-cobalt oxide magnetic mixture;

[0050] Mixing the zero-valent cobalt-cobalt oxide magnetic mixture, water-soluble nickel precursor, water-soluble carbonate and water, followed by precipitation and second calcination to obtain a magnetic nickel-cobalt oxide carrier;

[0051] The water-soluble gold precursor, polyvinylpyrrolidone, the magnetic nickel-cobalt oxide carrier, borohydride salt and water are mixed for a reduction reaction to obtain a magnetic nickel-cobalt oxide-supported gold catalyst.

[0052] In the present invention, unless otherwise specified, all raw material components are ...

Embodiment 1

[0097] (1) 2.91g of Co(NO 3 ) 2 ·6H 2 O and 30mL of deionized water were added to the lining of a 50mL hydrothermal kettle, 2.91g of urea was added, magnetically stirred at room temperature at a speed of 600rpm for 1.5h, packaged into a hydrothermal kettle, and the hydrothermal kettle was placed in an oven at 110°C for Hydrothermal reaction for 4 hours, naturally cooled to room temperature, filtered, and the resulting light pink solid was dried in an oven at 100°C for 13 hours, then calcined in an air atmosphere at 400°C for 4 hours, at 350°C and a hydrogen pressure of 0.1MPa Down reduction for 0.5h to obtain magnetic zero-valent cobalt;

[0098] (2) Add 0.1g of magnetic zero-valent cobalt into 100mL deionized water, sonicate for 10min, add 1.2gNi(NO 3 ) 2 ·6H 2 O, stirred at 300rpm for 10min, added Na 2 CO 3 When the pH value is 9, precipitate for 2 hours at room temperature and under stirring conditions, filter, wash the obtained solid product with water, dry it in an...

Embodiment 2

[0104] Prepare magnetic nickel-cobalt oxide-supported gold catalyst according to the method for embodiment 1, and the difference with embodiment 1 is, in step (2), Ni(NO 3 ) 2 ·6H 2 The quality of O is 0.4g, obtains magnetic nickel-cobalt oxide carrier (carrier composition can be known as (Co 3 o 4 ) 1 / 3 (NiO) 1 , labeled as CoNi 1 o y , y is 7 / 3); Step (3) obtains magnetic nickel-cobalt oxide supported gold catalyst (recorded as 0.5%Au / CoNi 1 o y , Au loading is 0.5wt%).

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Abstract

The invention provides a magnetic nickel-cobalt oxide supported gold catalyst, a preparation method and application thereof, and a preparation method of 2, 5-furandicarboxylic acid, and belongs to the technical field of catalysts. The magnetic nickel-cobalt oxide supported gold catalyst provided by the invention comprises a magnetic nickel-cobalt oxide carrier and gold nanoparticles supported on the magnetic nickel-cobalt oxide carrier, wherein the chemical composition of the magnetic nickel-cobalt oxide carrier is CoNixOy, x ranges from 1 to 5, and y is the number of oxygen atoms meeting the requirement that the valence state of CoNixOy is zero. The magnetic nickel-cobalt oxide supported gold catalyst provided by the invention has high catalytic activity on preparation of 2, 5-furandicarboxylic acid by oxidation of 5-hydroxymethylfurfural, has high selectivity on a target product 2, 5-furandicarboxylic acid, has good stability, can realize separation of the catalyst and the product through a simple and convenient physical magnetic separation mode, and the catalyst is high in repeated utilization rate and is an efficient, specific, green and environment-friendly catalyst.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a magnetic nickel-cobalt oxide-supported gold catalyst, a preparation method and application thereof, and a preparation method of 2,5-furandicarboxylic acid. Background technique [0002] The development of the traditional chemical industry relies heavily on petrochemical products extracted from fossil energy. With the depletion of petrochemical energy and the increasingly serious environmental pollution caused by it, people are looking for new renewable green chemical energy. According to the definition of the International Energy Agency, biomass refers to various organisms formed through photosynthesis in plants, and has the characteristics of renewability, low pollution, wide distribution, abundant resources, and carbon neutrality. Biomass energy is the fourth largest energy after coal, oil, and natural gas, and occupies an important position in the entire energy system. Si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/10B01J37/08B01J37/18C07D307/68
CPCB01J23/892B01J23/002B01J37/10B01J37/082B01J37/18C07D307/68B01J35/393B01J35/23B01J35/33
Inventor 方文浩张浩曹秋娥
Owner YUNNAN UNIV
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