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Preparation method of catalyst for efficient gas-phase conversion of furfural into 2-methylfuran

A methylfuran catalyst, a catalyst technology, applied in the directions of heterogeneous catalyst chemical elements, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of chromium environmental pollution, substandard Cr-containing catalysts, etc., and achieve the reaction process. The effect of stability, high metal utilization rate and 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

The conversion of furfural to 2-methylfuran mainly uses Cu-Cr catalysts. The use of a large amount of chromium causes serious environmental pollution. At present, local governments have basically banned the production of substandard Cr-containing catalysts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Example 1 Weighed 7.8 g of copper nitrate hydrate and 3 g of nickel nitrate were dissolved in 50.0 g of water, and 1.2 g of magnesium nitrate was added to stir the solvent. Take 30g of concentrated ammonia water and stir, add 34.0g of silica sol and stir for 4 hours, then mix and stir the salt solution and silica gel solution for 2 hours, then put it into the reaction kettle and seal it, conduct hydrothermal reaction at 120°C for 6h, then evaporate to dryness at 80°C, Then add water to wash and filter, dry at 120°C for 10 h, and calcinate at 450°C for 4 h to obtain the catalyst.

example 2

[0023] Example 2 Weighed 10.8 g of copper nitrate hydrate and 4.2 g of nickel nitrate were dissolved in 60.0 g of water, and 1.6 g of potassium nitrate was added to stir the solvent. Take 46g of concentrated ammonia water and stir, add 11.0g of silica gel powder and stir for 4 hours, then mix the salt solution and silica gel solution for 2 hours, then put it into the reaction kettle and seal it, react with water at 140°C for 12h, then evaporate to dryness at 90°C, Then add water to wash and filter, dry at 120°C for 10 h, and calcinate at 400°C for 4 h to obtain the catalyst.

example 3

[0024] Example 3 Weigh 9.8 g of copper nitrate hydrate and 0.2 g of palladium nitrate and dissolve them in 60.0 g of water, add 1.6 g of calcium nitrate and stir the solvent. Take 42g of concentrated ammonia water and stir, add 40.0g of silica sol and stir for 4 hours, then mix the salt solution and silica gel solution for 2 hours, then put it into the reaction kettle and seal it, conduct hydrothermal reaction at 140°C for 6h, then evaporate to dryness at 90°C, Then add water to wash and filter, dry at 120°C for 10 h, and calcinate at 400°C for 4 h to obtain the catalyst.

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Abstract

The invention relates to a preparation method of a catalyst for efficient gas-phase conversion of furfural into 2-methylfuran, and relates to a catalyst preparation method, which specifically comprises: preparing a solution from a soluble Cu salt, one or two materials selected from Ni salts, Pd salts and Au salts, and one selected from alkaline earth metals or alkali metals such as Mg, Ca, Ba, Na,K and the like; adding a silica sol or orthosilicate or silica gel powder to a concentrated ammonia water solution, adding a certain amount of an aluminum sol, and stirring for 1-5 h; and adding theprepared salt solvent to the ammonia water colloid solution, further stirring for 1-6 h, carrying out heating evaporation, washing, and calcining to synthesize the novel catalyst for hydrogen transfergas-phase conversion of furfural into 2-methylfuran. According to the present invention, the production process is simple, and the prepared catalyst has stable performance and good repeatability; andthe alcohol is used as the hydrogen transfer reagent, such that various dangers caused by the use of hydrogen are overcome.

Description

technical field [0001] The invention relates to a method for preparing a catalyst, in particular to a method for a high-efficiency furfural gas-phase conversion into a 2-methylfuran catalyst. Background technique [0002] Petroleum, coal, and natural gas provide society with basic energy and organic industrial raw materials, but they all belong to fossil resources, which are not renewable. With the continuous progress and development of society, the consumption of fossil resources is increasing year by year, and there is an urgent need for new energy to replenish. Biomass resources are renewable resources with abundant reserves, so the development and efficient utilization of biomass resources is of great significance to the sustainable development of society. [0003] 2-Methylfuran is an important organic chemical raw material, and a series of organic chemical products can be synthesized based on it, such as pentadiene, pentanediol, acetylpropanol and related ketones. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C07D307/36
CPCB01J23/002B01J23/8946C07D307/36B01J2523/00B01J35/394B01J2523/17B01J2523/22B01J2523/41B01J2523/847B01J2523/13B01J2523/23B01J2523/24
Inventor 王康军李松张雅静许光文丁茯
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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