Synthetic method and application of magnetic catalyst for preparing furfuryl alcohol through catalytic hydrogenation of furfural

A technology for catalytic hydrogenation and metal catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Low cost, low equipment requirements, the effect of reducing production costs

Pending Publication Date: 2021-08-24
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some people have done research on related systems, the requirements are harsh and the time is long (CatalysisToday 367(2021) 177–188)

Method used

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  • Synthetic method and application of magnetic catalyst for preparing furfuryl alcohol through catalytic hydrogenation of furfural
  • Synthetic method and application of magnetic catalyst for preparing furfuryl alcohol through catalytic hydrogenation of furfural
  • Synthetic method and application of magnetic catalyst for preparing furfuryl alcohol through catalytic hydrogenation of furfural

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 0.004mol of Co(NO 3 ) 2 ·6H 2 O is dissolved in 0.2 mol of water, and its aqueous solution is added with 0.01 mol of Al 2 o 3 After stirring overnight, dry it in a drying oven at 100°C, bake it in a muffle furnace at 500°C for 4 hours, and then reduce it in a tube furnace at 500°C for 4 hours before use to obtain the corresponding monometallic catalyst.

[0026] Take by weighing 0.2g furfural and 5mL water and put it into the 40mL reactor, then add 0.1g catalyst (Co-Al 2 o 3 , where Al 2 o 3 as a carrier, the active ingredient is Co, and the weight percentage of the active ingredient Co is 20%). Replace the air in the kettle with hydrogen for three to four times, then fill it with hydrogen until the initial pressure is 2MPa, turn on the stirring device at 400rpm, heat to 120°C for 4 hours and then cool down. The product is separated by a magnet and extracted with ethyl acetate. Gas chromatography mass spectrometry (GC-MS, ThermoScientific) was used for qu...

Embodiment 2

[0028] Weigh 0.004mol of Co(NO 3 ) 2 ·6H 2 O is dissolved in 0.2 mol of water, and its aqueous solution is added to 0.004 mol of Nb 2 o 5 After stirring overnight, dry it in a drying oven at 100°C, calcinate at 500°C for 4 hours, and reduce it in a tube furnace at 500°C with hydrogen for 4 hours before use to obtain the corresponding monometallic catalyst.

[0029] Take by weighing 0.2g furfural and 5mL water and put it into the 40mL reactor, then add 0.1g catalyst (Co-Nb 2 o 5 , where Nb 2 o 5 as a carrier, the active ingredient is Co, and the weight percentage of the active ingredient Co is 20%). Replace the air in the kettle with hydrogen for three to four times, then fill it with hydrogen until the initial pressure is 2MPa, turn on the stirring device at 400rpm, heat to 120°C for 4 hours and then cool down. The product is separated by a magnet and extracted with ethyl acetate. Gas chromatography mass spectrometry (GC-MS, ThermoScientific) was used for qualitative a...

Embodiment 3

[0031] The corresponding monometallic catalyst was prepared by the method of Example 2 for future use.

[0032]The reaction was carried out in the same manner as in Example 2, except that the reaction temperature was 100°C. The results obtained from the reaction are: the conversion rate of furfural is 98.52%, and the yield of furfuryl alcohol is 66.72%.

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Abstract

The invention discloses a method for preparing furfuryl alcohol through catalytic hydrogenation of furfural and a magnetic catalyst thereof. The magnetic catalyst is a supported catalyst, an active component Co of the magnetic catalyst comes from a corresponding non-noble metal salt solution, and a catalyst carrier is an oxide selected from Al or Nb oxides. The catalyst is prepared by adopting a simple excessive impregnation method, and the loading capacity of the active component is 20% of the mass of the corresponding carrier. According to the method, a biomass hydrolysate furfural is adopted as a raw material, commercial hydrogen is adopted as a hydrogen source, deionized water is adopted as a solvent, the reaction temperature is 100-140 DEG C, the hydrogen pressure is 1-2 MPa, the stirring speed is 400 rpm, and the reaction time is 1-4 h. Under optimal conditions, the conversion rate of furfural is close to 100%, and the selectivity of furfuryl alcohol is 96.89%. The catalyst is simple and convenient in preparation method, low in cost and cyclical, the catalytic system is green, the reaction substrate is renewable, the reaction condition is mild, the cost is low, and the catalyst has a wide industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a method for preparing furfuryl alcohol by catalytic hydrogenation of furfural and a magnetic catalyst thereof, and more particularly relates to a method for preparing furfuryl alcohol by liquid-phase hydrogenation of furfural with a cobalt-based monometallic catalyst. Background technique [0002] At present, furfural is made from biomass corncobs, hydrolyzed into pentose sugars under the action of dilute acid, and obtained through dehydration and cyclization. It has been industrially produced, and about 65% of the furfural produced is used as raw material for the synthesis of furfuryl alcohol. Furfuryl alcohol is mainly used in the production of synthetic fibers, constant temperature resins, corrosion-resistant glass fibers, pesticides, foundry adhesives, rocket fuel and spices, etc., and can also be used to synthesize lysine, vitamin C, lubricants, dispersant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/44B01J23/847B01J23/75B01J37/18
CPCC07D307/44B01J23/8474B01J37/18B01J23/75
Inventor 林鹿田野闫贵花陈高峰彭志清唐兴孙勇曾宪海
Owner XIAMEN UNIV
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