A kind of method of catalytic conversion furfural

A technology for catalytic conversion and furfural, applied in the field of chemistry, can solve the problems of low catalyst activity and high environmental pollution risk, and achieve the effects of simple conversion method, easy collection and cost reduction

Active Publication Date: 2018-11-20
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the existing furan and methyl furan preparation technology, the cost and safety problems related to transportation, storage and operation caused by the use of hydrogen, as well as the disadvantages of low catalyst activity and high environmental pollution risk, one of the purposes of the present invention It provides a method for catalytic conversion of furfural. The method uses furfural and methanol aqueous solution as raw materials, adds a supported nickel-based catalyst, and heats for reduction reaction to obtain furfural conversion products mainly composed of furan and / or methyl furan.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Catalyst preparation: impregnate 10 g of Al with an average pore diameter of 7.8 nm and a particle size distribution of 55 μm to 65 μm with a nickel nitrate solution with a concentration of 29 wt % using an equal volume impregnation method. 2 o 3 On the particles, Al impregnated with nickel nitrate 2 o 3 The particles were left to stand at room temperature for 12 hours, and then dried in a 30°C oven for 3h and then in a 50°C oven for 8h; then calcined at 500°C for 5h (the heating rate was 5°C / min); The supported catalyst precursor was passed through a tube furnace in 50% H at a flow rate of 300 mL / min 2 In a mixed gas environment with 50% Ar gas, the temperature was raised to 550° C. at a rate of 10° C. / min and kept for 2 hours to obtain a metal-supported catalyst.

[0035] Catalytic conversion of furfural: put 2g furfural, 10g water, 36g methanol and 0.5g catalyst into a high-pressure reactor with a volume of 100mL, and fill the reactor with N 2 Three times to purg...

Embodiment 2

[0044] Catalyst preparation: impregnate 10 g of Al with an average pore diameter of 7.8 nm and a particle size distribution of 55 μm to 65 μm with a nickel nitrate solution with a concentration of 29 wt % using an equal volume impregnation method. 2 o 3 On the particles, Al impregnated with nickel nitrate 2 o 3 The particles were left to stand at room temperature for 12 hours, and then dried in a 30°C oven for 3h and then in a 50°C oven for 8h; then calcined at 500°C for 5h (the heating rate was 5°C / min); The supported catalyst precursor was passed through a tube furnace in 50% H at a flow rate of 300 mL / min 2 In a mixed gas environment with 50% Ar gas, the temperature was raised to 550° C. at a rate of 10° C. / min and kept for 2 hours to obtain a metal-supported catalyst.

[0045] Catalytic conversion of furfural: put 2g furfural, 10g water, 18g methanol and 0.5g catalyst into a high-pressure reactor with a volume of 100mL, and fill the reactor with N 2 Three times to purg...

Embodiment 3

[0048] Catalyst preparation: impregnate the nickel nitrate solution with a concentration of 14wt% on 10 g of activated carbon particles with an average pore size of 0.63 nm and a particle size distribution of 55 μm to 65 μm by an equal-volume impregnation method, and leave the activated carbon particles impregnated with nickel nitrate at room temperature After 12 hours, it was dried in a 30°C oven for 3h and then in a 50°C oven for 8h; then it was calcined at 500°C for 5h (the heating rate was 5°C / min); all the calcined supported catalyst precursors were passed through Tube furnace in 50% H at a flow rate of 300mL / min 2 In a mixed gas environment with 50% Ar gas, the temperature was raised to 550° C. at a rate of 10° C. / min and kept for 2 hours to obtain a metal-supported catalyst.

[0049] Catalytic conversion of furfural: put 2g furfural, 10g water, 36g methanol and 0.5g catalyst into a high-pressure reactor with a capacity of 100mL, fill and discharge nitrogen into the reac...

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Abstract

The invention relates to a method for catalytic conversion of furfural, which comprises taking furfural and a methanol aqueous solution as raw materials and heating to carry out a reduction reaction on the furfural in the presence of a loaded type nickel-based catalyst, so as to prepare a furfural converted product comprising furan and / or methyl furan as main components. As the methanol aqueous solution is adopted as a solvent and a hydrogen supply reagent of the reaction, the situation that a series of cost and security problems of transportation, storage and operation are caused due to great consumption of external hydrogen can be avoided, methods of catalyst preparation and furfural conversion are simple, the used reagent is non-toxic, operation conditions are mild, the cost reduction and the production benefit improvement can be facilitated, and thus the method has good industrial prospects.

Description

technical field [0001] The invention relates to the chemical field, in particular to a method for catalytically converting furfural. Background technique [0002] The in-situ hydrogenation technology refers to that the reaction system itself provides the hydrogen source required for the reaction in the absence of external hydrogen supply. Isopropanol, etc., generate the hydrogen required for the reaction through the aqueous phase reforming reaction of small molecule oxygenates, replacing the traditional external hydrogen. The reaction is carried out in a high-pressure reactor. Compared with the conventional hydrogen conversion scheme using hydrogen as the hydrogen source, methanol aqueous solution is used as the reaction solvent and hydrogen reagent, which avoids a series of transportation caused by the large use of external hydrogen. , storage, operating costs and safety issues. In the present invention, the method for catalyst preparation and furfural conversion is simpl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/36
CPCC07D307/36
Inventor 王泽伏朝林宋文立林伟刚李松庚
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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