Method for preparing furfuryl alcohol through furfural liquid-phase catalytic hydrogenation

A liquid-phase catalysis and hydrogen production technology, which is applied in chemical instruments and methods, Raney-type catalysts, physical/chemical process catalysts, etc. , the effect of reducing energy consumption and reducing environmental pollution

Active Publication Date: 2012-07-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF8 Cites 39 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Copper-based catalysts prepared by precipitation or impregnation methods must be pre-reduced at a temperature higher than 200°C before use, while the reaction temperature of furfural hydrogenation is lower than the reduction temperature of copper catalysts, which

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Example 1: sieve 15 grams of 200-mesh copper-aluminum alloy powder, the alloy contains 5.5% (mass %) of nickel, dissolve 25 grams of NaOH in 100 ml of deionized water to make a solution, and slowly remove the copper-aluminum alloy powder under stirring. Add to NaOH solution, then warm to 70°C for activation for 1 hour. Wash with 500 ml of deionized water at 60°C to pH 7, then replace the deionized water with absolute ethanol. All the above-mentioned activated skeleton copper catalysts and 200 ml of furfural were added to the autoclave simultaneously, and then 0.4 g of NaOH was added. The reaction temperature in the control kettle is 130-140 DEG C, the hydrogen pressure is 3.0 MPa, the conversion rate of furfural is 99.5%, and the selectivity of furfuryl alcohol is 97.6%.

Example Embodiment

[0015] Example 2: sieve 15 grams of 200-mesh copper-aluminum alloy powder, the alloy contains 2.0% (mass %) of molybdenum, and the copper-aluminum alloy powder is slowly added to 250 milliliters of 2.5 mol / liter hydrochloric acid solution under stirring, and then The temperature was raised to 40°C for activation for 1 hour. Wash with 500 ml of deionized water at 60°C to pH 7, then replace the deionized water with absolute ethanol. All the above-mentioned activated skeleton copper catalysts and 200 ml of furfural were added to the autoclave simultaneously, and then 0.4 g of NaOH was added. The reaction temperature in the control kettle is 130-140 DEG C, the hydrogen pressure is 3.0 MPa, the conversion rate of furfural is 99.4%, and the selectivity of furfuryl alcohol is 97.3%.

Example Embodiment

[0016] Example 3: sieve 20 grams of 200-mesh copper-aluminum alloy powder, the alloy contains 3.5% (mass %) of iron, dissolve 30 grams of NaOH in 125 ml of deionized water to make a solution, and slowly stir the copper-aluminum alloy powder while stirring. Added to NaOH solution, then warmed to 60°C for activation for 1.5 hours. Wash with 500 ml of deionized water at 50°C to pH 8, and then replace the deionized water with absolute ethanol. All the above activated skeleton copper catalysts and 200 ml of furfural were added to the autoclave at the same time, and then 0.2 g of KOH was added. The reaction temperature in the control kettle is 120-130 DEG C, the hydrogen pressure is 4.0 MPa, the conversion rate of furfural is 99.8%, and the selectivity of furfuryl alcohol is 96.8%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for preparing furfuryl alcohol through furfural liquid-phase catalytic hydrogenation, wherein Cr-free skeletal copper serves as a catalyst; right amount of Cr-free VIB or VIII group transition metal is contained in precursor copper aluminium alloy of the catalyst and used for increasing the activity and the selectivity of the skeletal copper catalyst; and the skeletal copper catalyst can be obtained through extracting and activating the copper aluminium alloy by utilizing an aqueous solution of caustic alkali or inorganic acid. According to the invention, right amount of skeletal copper catalyst and alkaline inorganic matter are added in a furfural liquid-phase hydrogenation system to serve as auxiliaries and the reaction is carried out at lower temperature and hydrogen pressure, therefore, excessive hydrogenation products i.e. 2- methyl furan and tetrahydrofurfuryl alcohol can be avoided from generating and the selectivity of the product furfuryl alcohol is increased. The method disclosed by the invention has the advantages of no chrome in the catalyst, low reaction and light-off temperatures, simpleness in process, high furfuryl alcohol yield and selectivity and capability of continuous indiscriminate application of the catalyst.

Description

Technical field: [0001] The invention relates to a method for preparing furfuryl alcohol through liquid-phase catalytic hydrogenation of furfural, in particular to preparing furfuryl alcohol through liquid-phase catalytic hydrogenation of furfural with a chromium-free framework copper catalyst. Background technique: [0002] Furfuryl alcohol is an important organic chemical raw material, which is used to produce furan-type resins, furfuryl alcohol-urea-formaldehyde resins and phenolic resins with better performance; it can also produce fine chemical products such as medicine, pesticides, coatings, etc.; Good solvent and rocket fuel. In addition, furfuryl alcohol is also widely used in synthetic fiber, rubber and foundry industries. Furfuryl alcohol is generally prepared by catalytic hydrogenation of furfural. [0003] Catalytic hydrogenation of furfural to furfuryl alcohol usually has two methods: gas phase method and liquid phase method. Gas-phase hydrogenation is genera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07D307/44B01J25/00
Inventor 赵会吉刘晨光景美波殷长龙柴永明赵瑞玉张孔远柳云骐
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap