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Synthesis method of furfuryl alcohol, and porous nanometer silicon carbide supported platinum catalyst

A nano-silicon carbide and synthesis method technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, organic chemistry, etc., can solve rare problems and achieve the goals of reducing energy consumption, high conversion rate, and reducing production costs Effect

Active Publication Date: 2016-11-09
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, silicon carbide materials are mainly used in the fields of photoelectrocatalysis and high-temperature reactions, including photocatalytic reactions, Fischer-Tropsch reactions, solar cells, electrocatalytic oxidation and other reactions. In the field of traditional catalytic reactions, especially in gas-liquid-solid three-phase reactions It is rare, and there is no relevant report on the selective catalytic hydrogenation of furfural as a carrier loaded with active metal nanoparticles

Method used

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  • Synthesis method of furfuryl alcohol, and porous nanometer silicon carbide supported platinum catalyst
  • Synthesis method of furfuryl alcohol, and porous nanometer silicon carbide supported platinum catalyst
  • Synthesis method of furfuryl alcohol, and porous nanometer silicon carbide supported platinum catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1 Preparation of Porous Nano-Silicon Carbide Supported Platinum Catalyst 3Pt / SiC

[0049] (a), drop the aqueous solution of chloroplatinic acid in the porous nano-silicon carbide SiC carrier, the weight ratio of its metal platinum and the carrier is 1:32, after ultrasonic, stirring 5 hours, the solvent is naturally dried, then in an oven for 80 Dry at 100°C for 14 hours to obtain a porous nano-silicon carbide supported platinum catalyst precursor;

[0050] (b) Calcining the above catalyst precursor at 200° C. for 4 hours under nitrogen atmosphere.

[0051] (c) Reducing the calcined catalyst precursor at 500° C. for 3 hours in an atmosphere of 99.999% high-purity hydrogen to obtain a porous nano-silicon carbide-supported platinum catalyst 3Pt / SiC.

[0052] The porous nano-silicon carbide material and its large-angle X-ray diffraction as a carrier-supported platinum catalyst 3Pt / SiC are shown in figure 1 ,From figure 1 It can be found that the 2θ is at 35.6°, 6...

Embodiment 2

[0053] Example 2 Preparation of Porous Nano-Silicon Carbide Supported Platinum Catalyst Pt / SiC

[0054] The operating steps and conditions are the same as in Example 1, except that the weight ratio of metal platinum to the carrier is 1:99. The prepared catalyst is Pt / SiC, a platinum catalyst supported on porous nano-silicon carbide.

Embodiment 3

[0055] Example 3 Preparation of Porous Nano-Silicon Carbide Supported Platinum Catalyst 5Pt / SiC

[0056] The operation steps and conditions are the same as in Example 1, except that the weight ratio of metal platinum to the carrier is 1:19. The number of the prepared catalyst is 5Pt / SiC.

[0057] Table 1 Parameters of porous nano-silicon carbide supported platinum catalyst

[0058]

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Abstract

The invention discloses a green synthesis route of furfuryl alcohol. The synthesis route is characterized in that a selective hydrogenation reaction of furfural is carried out in an aqueous solvent at room temperature under the catalysis of a porous nanometer silicon carbide supported platinum catalyst to highly-selectively synthesize furfuryl alcohol. The porous nanometer silicon carbide supported platinum catalyst has a large specific surface area and a large pore volume, and has a cauliflower-like morphology structure, and uniform distribution and high dispersiveness of platinum particles are in favor of activating the active site of the catalyst and a reaction substrate, so when the catalyst is used in the selective hydrogenation reaction of furfural under mild reaction conditions (room temperature and aqueous solvent), the activity of the catalyst is high, and the furfuryl alcohol selectivity is high. The invention also discloses a preparation method of the porous nanometer silicon carbide supported platinum catalyst. The preparation method comprises the following steps: carrying out ultrasonic dipping on SiC adopted as a carrier and chloroplatinic acid hexahydrate as an active component precursor, drying the obtained material, and reducing the dried material at 500 DEG C in highly pure hydrogen with the purity of 99.999% to prepare the catalyst.

Description

technical field [0001] The invention relates to the field of preparation of fine chemicals, in particular to a green synthesis method of furfuryl alcohol and a porous nano silicon carbide supported platinum catalyst. Background technique [0002] In the biorefining system, furfural is one of the platform compounds that have been industrially produced, and its raw materials are abundant and diverse, and the price is low. Furfural can be extracted from a variety of agricultural by-products, including corn cobs, oat and wheat bran, and sawdust. Because it is mainly obtained from some renewable agricultural by-products rather than non-renewable petroleum or coal, how to effectively and greenly develop the chemical conversion and application of furfural as a substrate has attracted the attention of many scientists. [0003] Furfuryl alcohol is mainly an unsaturated alcohol product obtained by selective hydrogenation of furfural, and is widely used in the preparation of fine chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/44B01J27/224
CPCC07D307/44B01J27/224B01J35/394B01J35/393B01J35/615B01J35/635B01J35/647
Inventor 李晓红姚瑞华吴鹏
Owner EAST CHINA NORMAL UNIV
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