2-methylfuran preparation catalyst by gas-phase hydrogenation of furfural

Abstract

The invention discloses a catalyst that is used for preparing 2-dimethylfuran by furfural gas phase hydrogenation, and is characterized in that the catalyst consists of an active component CuO, a metallic oxide addition agent ZnO and a carrier Al2O3 that are mixed; wherein, the weight percentage of the active component CuO is 18 to 22 percent, the weight percentage of the metallic oxide addition agent ZnO is 3 to 7 percent, and the weight percentage of the carrier Al2O3 is 73 to 77 percent. The preparation method of the catalyst adopts a coprecipitation and microwave method, which comprises the steps of: (1) solution preparation, (2) precipitate generation, (3) precipitate rinsing, (4) precipitate drying, (5) precipitate baking and (6) microwave processing. The invention has the advantages that the catalyst has extremely high activity and selectivity, can achieve the furfural transformation rate of 100 percent and the 2-dimethylfuran selectivity of over 90 percent, and the catalyst does not contain Cr that is harmful to human body and has less environmental pollution.

Description

(1) Technical field:

[0001] The invention relates to a catalyst for producing 2-methylfuran, in particular to a catalyst for preparing 2-methylfuran by gas-phase hydrogenation of furfural and a preparation method thereof. (two) 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 for this ph...