Catalyst for catalyzing furfural or furfuryl alcohol to prepare cyclopentanol through hydrogenation rearrangement and preparation method and application method thereof

Abstract

The invention provides a catalyst for catalyzing furfural or furfuryl alcohol to prepare cyclopentanol through hydrogenation rearrangement. The catalyst is a load type catalyst and comprises one or two active components and carriers; the one or two active components are selected from Pt or Pd or Ru or Rh or Cu or Ni; the carriers are one or two oxides which are selected from Co or Al or Mn or Ce; the mass of the active components is 0.5-8.0% of that of the carriers. According to the catalyst, the high-yield cyclopentanol can be obtained under the condition of moderate water phase hydrogenation by taking the furfural or the furfuryl alcohol as raw materials, the yield can reach 80 percent, and a continuable, low-cost, moderate and effective method is supplied to production of the important fine chemical cyclopentanol.

Description

Technical field: [0001] The invention relates to the field of synthesis of fine chemicals, in particular to a catalyst for catalyzing the rearrangement and hydrogenation of furfural or furfuryl alcohol to prepare cyclopentanol, specifically, to a rearrangement in an aqueous phase system using furfural or furfuryl alcohol as a raw material A catalyst for preparing cyclopentanol by hydrogenation and a preparation method thereof, and a method for preparing cyclopentanol by using the catalyst to catalyze rearrangement and hydrogenation of furfural or furfuryl alcohol. Background technique: [0002] Cyclopentanol is an important fine chemical intermediate, a raw material for the pharmaceutical, dye and fragrance industries, and a solvent for drugs and fragrances. It is mainly used in the industry to prepare bromocyclopentane, chlorocyclopentane and methyl Cyclopentyl ether etc. At present, the industrial production methods of cyclopentanone are mainly adipic acid decarboxylation...

AI Technical Summary

Problems solved by technology

Using adipic acid as raw material to produce cyclopentanone through high-temperature decarboxylation, and then hydrogenation reaction to obtain cyclopentanol. The raw material of this technical route depends on the production of adipic acid, involving multiple tedious reaction steps, and the production process involves decarboxylation process , the theoretical mass yield is less than 60%, the atom economy is not high, and a large amount of pollutants are produced in the production process, and this preparation method is increasingly restricted

In addition, cyclopentene, which is produced by the C5 fraction produced by cracking naphtha to produce ethylene, can also be used as a raw material to produce cyclopentanol through hydration reaction. However, due to the use of concentrated sulfuric acid in the preparation process, the resistance to Corrosiveness requirements are extremely high, and the recovery of concentrated sulfuric acid is difficult, and the environmental pollution is very serious

At the same time, in the direct hydration process, the reaction conversion rate is low, and the circulation of raw material cyclopentene is relatively large.

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