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Magnetic catalyst, preparation method thereof, and method for preparing furfuryl alcohol

A magnetic catalyst, furfuryl alcohol technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of unfavorable catalyst environment, difficulty in balancing catalytic activity and reusability etc. to achieve good reusability, high catalytic activity and selectivity

Active Publication Date: 2019-11-12
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of magnetic catalyst and its preparation method, the method for preparing furfuryl alcohol, to solve the catalytic activity and reusability that exist when copper chromium series catalyst is used in the existing liquid phase hydrogenation method, it is difficult to take into account, the catalyst contains Toxic heavy metals are harmful to the environment and other issues

Method used

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  • Magnetic catalyst, preparation method thereof, and method for preparing furfuryl alcohol
  • Magnetic catalyst, preparation method thereof, and method for preparing furfuryl alcohol
  • Magnetic catalyst, preparation method thereof, and method for preparing furfuryl alcohol

Examples

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Embodiment 1

[0030] This embodiment provides a magnetic catalyst, and the preparation method of the magnetic catalyst comprises the following steps:

[0031] To treat carbon nanotubes, put 1g of carbon nanotubes in 75mL of concentrated sulfuric acid with a mass percentage of 70%, ultrasonically disperse at 30°C for 0.5h, then add 25mL of concentrated nitric acid with a mass percentage of 68% to form a mixed acid, continue Ultrasonic disperse for 0.5h, then heat up to 120°C and reflux for 6h, filter with a 0.45μm microporous membrane after cooling, wash the filtered carbon nanotubes with deionized water until the pH of the filtrate is neutral, and wash the carbon nanotubes The tubes were dried at 100°C to obtain acid-treated carbon nanotubes. Summary of this embodiment, the volume ratio of concentrated sulfuric acid and concentrated nitric acid is 3:1, and every 100 mL of the mixed acid of concentrated sulfuric acid and concentrated nitric acid is used to treat 1 g of carbon nanotubes.

[...

Embodiment 2

[0036] The difference between this example and Example 1 is that in the reaction step, 0.088g of ferric chloride hexahydrate is weighed, and 0.450g of acid-treated carbon nanotubes are added to the aqueous solution of ferric chloride for treatment to obtain A magnetic catalyst with a ruthenium loading of 5wt% and a ferric oxide loading of 5wt% is designated as R2.

Embodiment 3

[0038] The difference between this example and Example 1 is that in the reaction step, 0.175g of ferric chloride hexahydrate is weighed, and 0.425g of acid-treated carbon nanotubes are added to the aqueous solution of ferric chloride for treatment to obtain A magnetic catalyst with a ruthenium loading of 5wt% and a ferric oxide loading of 10wt% is coded as R3.

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Abstract

The invention relates to the technical field of catalysts, and more particularly to a magnetic catalyst, a preparation method thereof, and a method for preparing furfuryl alcohol. The preparation method of the magnetic catalyst comprises the following steps: treating carbon nanotubes, namely treating the carbon nanotube in an acid agent to obtain acid-treated carbon nanotubes; and carrying out reaction, namely adding the acid-treated carbon nanotubes to an aqueous solution of ferric trichloride, adjusting the pH value, then adding an aqueous solution of ruthenium trichloride thereto, and adding hydrazine hydrate to react under a stirring condition to obtain the magnetic catalyst loaded with ruthenium and triiron tetraoxide. A magnetic catalyst with ruthenium and triiron tetraoxide loaded on carbon nanotubes can be obtained by the preparation method disclosed in the invention, which is high in catalytic activity and selectivity and good in reusability without causing environmental pollution.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a magnetic catalyst, a preparation method thereof, and a method for preparing furfuryl alcohol. Background technique [0002] Furfuryl alcohol is an important chemical intermediate, which can be widely used in the production of resin, rubber, fiber and other materials. Furfuryl alcohol can be produced by hydrogenation of furfural, and furfural can be obtained by converting renewable resources such as biomass straw. [0003] The methods for preparing furfuryl alcohol by hydrogenation of furfural are divided into gas-phase hydrogenation method and liquid-phase hydrogenation method, both of which use molecular hydrogen as hydrogen source for catalytic hydrogenation. Restricted by existing domestic conditions, the method of preparing furfuryl alcohol by liquid-phase hydrogenation of furfural is the main method in my country. The catalysts used in the hydrogenation process include...

Claims

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Application Information

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IPC IPC(8): B01J23/89C07D307/44
CPCB01J23/8906C07D307/44B01J35/33
Inventor 李锋李翠勤蒋姗姗张娜王越张健宋华
Owner NORTHEAST GASOLINEEUM UNIV
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