Preparation method of catalyst for environmentally-friendly efficient conversion of furfural into 2-methylfuran

A methylfuran catalyst, catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve environmental pollution and health hazards, catalyst selectivity or Problems such as low stability, to achieve the effect of stable performance

Inactive Publication Date: 2019-08-30
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Environmental pollution and health hazards caused by the addition of Cr to the current industrial catalysts for the hydrogenation of furfural to 2-methylfuran, and the selectivity or stability of other catalysts is not high

Method used

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  • Preparation method of catalyst for environmentally-friendly efficient conversion of furfural into 2-methylfuran

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 25.6g of copper nitrate trihydrate and 4g of lanthanum nitrate were dissolved in 100ml of deionized water, and then added to 62g of silica gel powder. Get 36g of ammonium carbonate and dissolve it in 200ml of deionized water, then add the ammonia solution to the metal salt solution, and transfer it to the hydrothermal reaction kettle, react at 120°C for 8 hours, then carry out the distillation reaction until the pH is 7, and then After filtering and washing, it was dried at 110°C for 12 hours, and then calcined at 450°C for 4 hours in a muffle furnace to prepare the catalyst.

Embodiment 2

[0023] Example 2 32 grams of copper nitrate trihydrate and 4.36 grams of cerium nitrate were dissolved in 140 ml of deionized water, and then added to 72 g of silica gel powder. Take 66 grams of urea and dissolve it in 100ml deionized water, mix the two solutions under stirring conditions, and transfer them to a hydrothermal reaction kettle, react at 120°C for 12 hours, then carry out distillation reaction until the pH is 7, and then After filtering and washing, it was dried at 110°C for 12 hours, and then calcined at 450°C for 4 hours in a muffle furnace to prepare the catalyst.

Embodiment 3

[0024] Example 3 32 grams of copper nitrate trihydrate and 6.4 g of yttrium nitrate were dissolved in 150 ml of aqueous solution, and then added to 320 ml of orthosilicate. Take 70ml of ammonia solution, mix the two solutions under stirring conditions, and transfer to a hydrothermal reaction kettle, react at 150°C for 4 hours, then carry out distillation reaction until the pH is 7, then filter and wash, in The catalyst was prepared by drying at 110°C for 12 hours, and then calcining at 400°C for 4 hours in a muffle furnace.

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Abstract

The invention provides a preparation method of a catalyst for environmentally-friendly efficient conversion of furfural into 2-methylfuran, and relates to a catalyst preparation method. According to the present invention, the high dispersion of active components, rare earth and other modification components is achieved through the precipitation and hydrothermal synergetic preparation method; the catalyst comprises 20-50% of a copper oxide, 40-70% of silicon oxide, 0-8% of alumina, and 1-6% of a rare earth oxide of La, Ce, Pr, Nd, Sc, Y and other rare earth elements, and is a regulated modifiedCu catalyst; and with the application of the synthesized environmentally-friendly catalyst in the preparation of 2-methylfuran through gas phase hydrogenation of furfural, the furfural conversion rate is 100%, the 2-methylfuran selectivity is more than 90%, and the performance is stable after the continuous operation for 500 h.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of an environment-friendly catalyst for efficiently converting furfural into 2-methylfuran. Background technique [0002] 2-Methylfuran is widely used in medicine, pesticide and fine chemical industry. It can be used as a raw material to synthesize a series of organic chemicals, such as pentadiene, pentanediol, acetylpropanol and ketones. 2-Methylfuran is mainly synthesized by hydrogenation of furfural, which is mainly derived from corncobs, rice husks, cottonseed hulls, bagasse, etc. my country is a large agricultural country, and the raw materials for producing furfural are very rich. In 2018, there were 132 furfural manufacturers in my country, with an annual production capacity of 800,000 tons, and the current actual annual output is more than 600,000 tons. Therefore, the development of high-activity, high-selectivity and long-life furfural hydrogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C07D307/36
CPCB01J23/002B01J23/83C07D307/36B01J35/0066B01J2523/00
Inventor 王康军李松张雅静丁茯王东平贾松岩许光文
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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