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Catalyst for preparing 2-methylfuran by gas-phase hydrogenation of furaldehyde and its preparation method

A technology of methyl furan and catalyst, which is applied in the field of catalyst and preparation of furfural gas-phase hydrogenation to 2-methyl furan, can solve serious environmental pollution and other problems, and achieve high activity, selectivity and low pollution effect

Inactive Publication Date: 2008-03-19
CHINA NAT ACAD NANOTECH & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst can obtain a high product yield, but the catalyst contains Cr, which causes serious environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of catalyst of furfural gas-phase hydrogenation system 2-methylfuran, is characterized in that catalyst is made of active component CuO, carrier SiO 2 . The mixed composition of metal oxide additive CaO, wherein: the active component CuO accounts for 22% of the total weight, the metal oxide additive CaO accounts for 3% of the total weight, and the carrier SiO2 accounts for 75% of the total weight.

[0015] The preparation method of above-mentioned furfural gas-phase hydrogenation 2-methylfuran catalyst is characterized in that what catalyst adopts is impregnation method, and concrete steps are as follows:

[0016] Prepare 1M solution with 16 grams of copper nitrate and 2.95 grams of calcium nitrate, impregnate the mixed solvent into 25 grams of SiO 2 , stirring constantly, use a hair dryer to blow the SiO 2 blow dry. The catalyst was then dried in a drying chamber at 110°C for 5 hours. During the drying period, the catalyst was stirred every half...

Embodiment 2

[0017] Embodiment 2: a kind of catalyst of furfural gas-phase hydrogenation system 2-methylfuran, is characterized in that catalyst is made of active component CuO, carrier SiO 2 1. The mixed composition of metal oxide additive ZnO, wherein: the active component CuO accounts for 18% of the total weight, the metal oxide additive ZnO accounts for 5% of the total weight, and the carrier SiO2 accounts for 77% of the total weight.

[0018] The preparation method of above-mentioned furfural gas-phase hydrogenation 2-methylfuran catalyst is characterized in that what catalyst adopts is impregnation method, and concrete steps are as follows:

[0019] 13.05 grams of copper nitrate and 5.36 grams of zinc nitrate were prepared as a 1M solution, and the mixed solvent was impregnated into 25.67 grams of SiO 2 , stirring constantly, use a hair dryer to blow the SiO 2 blow dry. The catalyst was then dried in a drying chamber at 100°C for 5 hours. During the drying period, the catalyst was...

Embodiment 3

[0020] Embodiment 3: a kind of catalyst of furfural gas-phase hydrogenation 2-methylfuran is characterized in that catalyst is made of active component CuO, carrier SiO 2 1. The mixed composition of metal oxide additive SrO, wherein: the active component CuO accounts for 20% of the total weight, the metal oxide additive SrO accounts for 7% of the total weight, and the carrier SiO2 accounts for 73% of the total weight.

[0021] The preparation method of above-mentioned furfural gas-phase hydrogenation 2-methylfuran catalyst is characterized in that what catalyst adopts is impregnation method, and concrete steps are as follows:

[0022] 14.5 grams of copper nitrate and 4.28 grams of strontium nitrate were prepared into a 1M solution, and the mixed solvent was impregnated into 24.33 grams of SiO 2 , stirring constantly, use a hair dryer to blow the SiO 2 blow dry. The catalyst was then dried in a drying chamber at 110°C for 5 hours. During the drying period, the catalyst was s...

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PUM

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Abstract

The invention provides a catalyst to prepare furfural gas 2-methylfuran and the preparation method. Silica is used as the carrier, copper oxide is used as the main active component and alkali metal or alkaline earth metal is used as the promoter. The preparation method of the catalyst adopts impregnation method. the catalyst has the advantages of high product yield, few by-products, little influence on environment, and long service life, etc, and is widely applicable in production of 2-methylfuran.

Description

(1) Technical field [0001] The invention relates to a catalyst for preparing and producing 2-methylfuran, in particular to a catalyst for preparing 2-methylfuran by gas-phase hydrogenation of furfural and a preparation method thereof. (2) Background technology [0002] 2-Methylfuran is an organic raw material, based on which a series of organic products can be synthesized, such as pentadiene, pentanediol, acetylpropanol and ketones; it is also a good solvent and is often used in the solution compounding process; It is also a pharmaceutical intermediate, used to prepare vitamin B1, chloroquine phosphate, primaquine phosphate, etc. [0003] At present, 2-methylfuran is mainly produced in industry by gas-phase catalytic hydrogenation of furfural. my country is a big producer of furfural, with an annual production of about 150,000 tons of furfural, most of which become cheap raw materials for export, and the required 2-methylfuran is obtained through imports. The main reason f...

Claims

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Application Information

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IPC IPC(8): B01J23/78B01J23/72B01J21/08C07D307/36
Inventor 张东
Owner CHINA NAT ACAD NANOTECH & ENG
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