Method for preparing cyclopentanone by taking biomass resource as raw material

A technology of biomass resources and cyclopentanone, which is applied in the preparation of heterocyclic compounds, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as corrosion of reactors, easy increase of chlorinated products, harsh reaction conditions, etc., to achieve Reduced reaction steps, beneficial to environmental protection, and the effect of fewer steps

Inactive Publication Date: 2016-02-17
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are generally a large amount of chloride ions in the Wacker process, which not only corrodes the reactor but also easily increases chlorinated products; while N 2 The oxidation method of O as an oxidant is generally carried out at high temperature (280°C) and high pressure (30MPa), and the reaction conditions are harsh.

Method used

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  • Method for preparing cyclopentanone by taking biomass resource as raw material
  • Method for preparing cyclopentanone by taking biomass resource as raw material
  • Method for preparing cyclopentanone by taking biomass resource as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1, an iron oxide supported gold catalyst was prepared by a coprecipitation method.

[0033] 0.468g HAuCl 4 ·4H 2 O, 12.65g Fe (NO 3 ) 3 ·9H 2 O, 0.5L water was put into a 1L beaker, and 0.2M sodium hydroxide solution with a concentration of 0.2M was added dropwise under stirring at 80 °C until the pH was about 8, and the stirring was continued for 30 minutes. The precipitate was filtered and washed with distilled water until no Cl - , vacuum dried for 12 hours, and finally calcined in a muffle furnace at 300 °C for 4 hours. The catalyst was prepared after cooling, expressed as Au / Fe 2 O 3 .

Embodiment 2

[0034] Example 2, titanium oxide, aluminum oxide, magnesium oxide, cerium oxide, and niobium oxide supported gold catalysts were prepared by a sodium hydroxide deposition-precipitation method.

[0035] 0.104g HAuCl 4 ·4H 2 O, 0.5L water was put into a 1L beaker, and 0.2M sodium hydroxide solution with a concentration of 0.2M was added dropwise to a pH of about 7 under stirring at 80 °C, and 5g TiO was added. 2 or Al 2 O 3 or CeO 2 , continue stirring for 2 hours at 80 °C, filter the precipitate, wash with distilled water until no Cl-, vacuum dry for 12 hours, and finally calcinate in a muffle furnace at 300 °C for 4 hours. The catalyst was prepared after cooling, denoted as Au / TiO 2 , Au / Al 2 O 3 , Au / MgO, Au / CeO 2 or Au / Nb 2 O 5 .

Embodiment 3

[0036] Example 3, zirconia, silica, H-ZSM-5 molecular sieve, and HY molecular sieve supported gold catalysts were prepared by ammonia water deposition-precipitation method.

[0037] 0.104g HAuCl 4 ·4H 2 O, 0.5L water is put into 1L beaker, put 5gZrO 2 or SiO 2 , under stirring, dropwise into the ammonia solution with a concentration of 0.26M until the pH is about 9, continue stirring at room temperature for 8 hours, filter the precipitate, and wash with distilled water until no Cl - , vacuum dried for 12 hours, and finally calcined in a muffle furnace at 300 °C for 4 hours. The catalyst was prepared after cooling, expressed as Au / ZrO 2 , Au / SiO 2 , Au / H-ZSM-5 or Au / HY.

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Abstract

The invention belongs to the technical field of biomass conversion utilization, and concretely relates to a method for preparing cyclopentanone by taking biomass resource as a raw material. The method comprises taking furfural coming from biomass as the raw material, taking a hydrogen-containing gas as a reducing agent, and in the presence of a metal supported type catalyst, performing hydrogenation rearrangement reaction in a high-pressure reaction kettle or a fixed bed reactor, so as to obtain cyclopentanone in one step, wherein the carrier of the metal supported type catalyst is selected from Nb2O5, H-ZSM-5 molecular sieve, HY molecular sieve, Fe2O3, ZrO2, Al2O3, SiO2, CeO2, MgO, active carbon, and TiO2 in various crystal forms, the active composition is selected from Au, Pt, Ru, Rh, Pd, Ir, Ni and Cu, and the active composition load capacity is 0.1-5% of the catalyst. The method is mild in reaction technological conditions, and cheap and easily-available in raw materials, is capable of realizing quantitative conversion of furfural to cyclopentanone, and belongs to an environment-friendly green chemical technology.

Description

technical field [0001] The invention belongs to the technical field of biomass conversion and utilization, and in particular relates to a method for preparing cyclopentanone. Background technique [0002] Due to the depletion of traditional energy sources and the increase in energy demand on a global scale, the development of alternative energy sources is currently receiving great attention. Obtaining energy chemicals from renewable biomass resources and reducing the dependence of chemicals on petrochemical resources such as petroleum has important scientific significance and application prospects. Carbohydrates are the main components of biomass resources, and the bio-based platform compound furfural (FFA) can be efficiently obtained by hydrolysis and dehydration. In recent years, the catalytic conversion of FFA has attracted extensive interest from researchers at home and abroad, and great progress has been made. Using furfural as raw material, through hydrogenation, oxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/59C07C49/395B01J23/89B01J23/52B01J23/66B01J23/42B01J23/44B01J23/46B01J29/12B01J29/44
CPCB01J23/42B01J23/44B01J23/462B01J23/464B01J23/468B01J23/52B01J23/66B01J23/682B01J23/8906B01J29/126B01J29/44B01J2229/186C07C45/59C07C49/395Y02P20/50
Inventor 张高硕张奇刘永梅曹勇
Owner FUDAN UNIV
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