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2-methyl furan catalyst and preparation method thereof

A methyl furan catalyst, a catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as poor catalyst stability and achieve high selectivity , high active effect

Inactive Publication Date: 2015-03-04
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the catalyst gave a higher selectivity to 2-methylfuran, the stability of the catalyst was poor

Method used

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  • 2-methyl furan catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve 56 grams of sodium hydroxide in 500 ml of deionized water, dissolve 80 grams of copper nitrate trihydrate, 20 grams of calcium nitrate, and 7 grams of zinc nitrate in 150 ml of deionized water, then add the sodium hydroxide solution to 650 ml of aluminum sol Under the condition of stirring, the aluminum sol solution dissolving the nitrate and the sodium hydroxide aqueous solution were mixed at 60°C to obtain a precipitate with a pH of 7 and then aged for 3 hours. After the precipitate was filtered and washed, it was dried at 140°C for 12 hours, and then in The catalyst was prepared by calcining at 500°C for 4 hours in a muffle furnace.

Embodiment 2

[0020] 186 grams of copper nitrate trihydrate and 28.5 grams of barium nitrate were dissolved in 200 ml of deionized water, and then added to 1500 ml of aluminum sol. Take 740ml of 0.5mol / L ammonia solution, mix the nitrate-dissolved aluminum sol solution and ammonia solution at 50°C under stirring conditions to obtain a precipitate with a pH of 7, then age for 2 hours, filter and wash the precipitate, and store it at 120°C The catalyst was dried under conditions for 12 hours, and then calcined in a muffle furnace at 450° C. for 4 hours.

Embodiment 3

[0022] 32 grams of copper nitrate trihydrate, 2.5 grams of barium nitrate, and 5.0 grams of potassium nitrate were dissolved in 120 ml of deionized water, and then added to 300 ml of aluminum sol. Dissolve 42 grams of sodium carbonate in 250ml of deionized water, mix the aluminum sol solution dissolving nitrate and sodium carbonate aqueous solution at 50°C under stirring conditions to obtain a precipitate, the pH is 7, then age for 2 hours, filter and wash the precipitate Finally, it was dried at 140°C for 12 hours, and then calcined at 500°C for 4 hours in a muffle furnace to prepare the catalyst.

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Abstract

The invention discloses a 2-methyl furan catalyst and a preparation method thereof, and relates to a catalyst and a preparation method thereof. The catalyst comprises active ingredients, such as 30-50 mass percent of CuO, 40-60 mass percent of aluminum oxide or silicon oxide, and aids selected from CaO, BaO, Na2O, K2O, Sr2O and ZnO, wherein the total mass percent of one or two of the aids is 5-10. The 2-methyl furan catalyst is synthesized by virtue of furfural hydrogenation. The preparation method comprises the following steps: dissolving a metal copper salt and an alkali metal or alkaline-earth metal salt in alumina sol or silica sol; enabling the salts to react with a precipitator so as to obtain a precipitate, aging for 1-4 hours after the precipitation is finished, washing, drying, molding and roasting; and finally preparing an oxidation state precursor of the catalyst, wherein an addition mode of reacting a salt solution and the precipitator refers to a positive addition method, a back addition method or a parallel addition method. The component of the catalyst does not contain Cr, and the catalyst is green; and moreover, the catalyst has the high activity and the high selectivity, the furfural conversion rate is 100 percent, and the selectivity of the 2-methyl furan is over 90 percent.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to a 2-methylfuran catalyst and a preparation method thereof. Background technique [0002] 2-Methylfuran is a colorless liquid with an ether-like odor, which gradually turns yellow over time. As an important organic chemical intermediate, 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, pentylene glycol, acetylpropanol and ketones; in the pharmaceutical industry, 2-methylfuran is used to prepare vitamin B1 and the anti-dysentery drug chloroquine phosphate , primaquine phosphate, etc. The catalysts currently used in industry are mainly Cu-Cr catalysts, which are very expensive. [0003] Zheng Chunzhi and others 2 Cr 2 o 7 and Cu, Ca, Ba nitrates to make a mixed solution, using ammonia water as a precipitating agent, and the precipitatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J23/78
Inventor 王康军吴静苑贵金台宝泉
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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