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Magnetic nanomaterial supported ruthenium catalyst and application of magnetic nanomaterial supported ruthenium catalyst in preparation of 2, 5-dimethylfuran by catalyzing 5-hydroxymethylfurfural

A technology of hydroxymethylfurfural and magnetic nanometers, which is applied in the preparation and application of new catalyst materials, can solve the problems of unfavorable large-scale production and inconvenient catalyst recovery, and achieve simple recovery and reuse, not easy to deactivate, and simple operation Effect

Inactive Publication Date: 2015-05-13
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, most of the methods for preparing DMF disclosed in the prior art have used noble metal catalysts, and catalyst recovery is inconvenient, which is not conducive to large-scale production

Method used

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  • Magnetic nanomaterial supported ruthenium catalyst and application of magnetic nanomaterial supported ruthenium catalyst in preparation of 2, 5-dimethylfuran by catalyzing 5-hydroxymethylfurfural
  • Magnetic nanomaterial supported ruthenium catalyst and application of magnetic nanomaterial supported ruthenium catalyst in preparation of 2, 5-dimethylfuran by catalyzing 5-hydroxymethylfurfural
  • Magnetic nanomaterial supported ruthenium catalyst and application of magnetic nanomaterial supported ruthenium catalyst in preparation of 2, 5-dimethylfuran by catalyzing 5-hydroxymethylfurfural

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A magnetic nanomaterial loaded with ruthenium (Fe 3 o 4 C-Ru) the preparation method of catalyst, its step is as follows:

[0037] 1. Fe 3 o 4 Preparation of nanomaterials: synthesized according to the method designed by Diao Guowang et al. (J Phys Chem C 2011; 115:18923-34.). 1.5g FeCl 3 ·6H 2 O. 1g of polyvinylpyrrolidone (average molecular weight 1300000) and 2g of sodium acetate were added to 30mL of ethylene glycol, stirred vigorously for 2h, then the resulting mixture was transferred to a polytetrafluoroethylene-lined stainless steel autoclave, and reacted at 200°C 8h, the resulting black precipitate was collected with a magnet, washed twice with ethanol, and then vacuum-dried at 60°C for 24h to obtain a black solid, namely Fe 3 o 4 nanomaterials.

[0038] 2. Fe 3 o 4 C Preparation of magnetic nanomaterials: synthesized according to the method designed by Li Shenghai et al. (Langmuir 2010; 26:6676-80.). Fe obtained in step 1 3 o 4 Nanomaterials immers...

Embodiment 2

[0041] Utilize the Fe prepared by embodiment 1 3 o 4 C-Ru Catalyst Hydrogenation Reduction of 5-Hydroxymethylfurfural to Prepare 2,5-Dimethylfuran:

[0042] With HMF (50.4mg), tetrahydrofuran (THF, 12mL) and the Fe prepared in Example 1 3 o 4 The C-Ru catalyst (65mg) was added into a 50mL stainless steel reaction kettle, and the air was replaced with hydrogen three times, and the resulting mixture was heated to 130° C. and stirred for 6 hours under a hydrogen pressure of 1 to 30 bar. Detected by high performance liquid chromatography, the HMF conversion rate and the resulting DMF yield are shown in the table below.

[0043] hydrogen pressure

[0044] 1 bar

Embodiment 3

[0045] The Fe of different ruthenium mass fractions of embodiment 3 3 o 4 Preparation and Catalytic Activity of C-Ru Catalyst

[0046] Fe with different ruthenium mass fractions 3 o 4 The preparation method of C-Ru catalyst is the same as embodiment 1, only changes RuCl in step 3 3 ·xH 2 The addition amount of O (2.5-25mg), can obtain the active component metal ruthenium mass percentage in 1%~10% Fe 3 o 4 C-Ru catalyst.

[0047] HMF (50.4mg), THF (12mL) and the above-mentioned ruthenium mass fraction are 1%~10% Fe 3 o 4 The C-Ru catalyst (65mg) was added into a 50mL stainless steel reaction kettle, and the air was replaced with hydrogen three times, and the resulting mixture was heated to 130° C. under 15 bar hydrogen pressure and stirred for 6 hours. Detected by high performance liquid chromatography, HMF conversion rate and gained DMF yield are as follows:

[0048] The mass fraction of Ru in the catalyst

[0049] 10％

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Abstract

The invention relates to the technical field of preparation and application of a novel catalyst material, in particular to a magnetic nanomaterial supported ruthenium catalyst and an application of the magnetic nanomaterial supported ruthenium catalyst in preparation of 2, 5-dimethylfuran by catalyzing 5-hydroxymethylfurfural. The magnetic nanomaterial supported ruthenium salt Fe3O4@C-Ru is taken as a catalyst, and a magnetic nanomaterial can be easier to recycle under the external magnetic field, so that the problem of production cost increase caused by the fact that the catalyst is difficult to recycle in the process of 2, 5-dimethylfuran preparation through hydrogenation reduction of 5-hydroxymethylfurfural; the catalyst has the numerous advantages that the catalytic reaction yield is high, products are easy to separate, the catalyst is simple and convenient to recycle and the like, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of preparation and application of novel catalyst materials, in particular to a magnetic nanomaterial-supported ruthenium catalyst and its application in catalyzing 5-hydroxymethylfurfural to prepare 2,5-dimethylfuran. Background technique [0002] With the depletion of fossil resources and the rising global greenhouse gas emissions, the production of high value-added fuels from renewable biomass resources has attracted extensive attention and has become a hot spot in current scientific research. [0003] 2,5-Dimethylfuran (DMF) is a very promising renewable liquid biomass fuel, which has the characteristics of high energy density, high boiling point, and good explosion-proof performance compared with ethanol. [0004] At present, DMF is mainly prepared by catalytic hydrogenation of 5-hydroxymethylfurfural (HMF). For example Roman-Leshkov etc. first use hydrochloric acid to catalyze fructose to generate HMF ...

Claims

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Application Information

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IPC IPC(8): B01J23/89C07D307/36
CPCY02P20/584
Inventor 张泽会刘冰王树国吕康乐任永申
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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