Unlock instant, AI-driven research and patent intelligence for your innovation.

CuFe bimetallic catalyst and preparation method and application thereof

A bimetallic catalyst, hydrothermal reaction technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, to achieve high selectivity of target products, short cycle time, particle size Evenly distributed effect

Pending Publication Date: 2022-04-26
UNIV OF SCI & TECH OF CHINA
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, to achieve CO 2 Atmospheric pressure hydrogenation to long-chain olefins remains a great challenge

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • CuFe bimetallic catalyst and preparation method and application thereof
  • CuFe bimetallic catalyst and preparation method and application thereof
  • CuFe bimetallic catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The invention provides a kind of preparation method of CuFe bimetallic catalyst, comprising:

[0029] A) Mix ferric nitrate nonahydrate and copper nitrate trihydrate with water to obtain a mixed solution; add lye dropwise to the mixed solution, then add propionaldehyde, stir for hydrothermal reaction, cool, centrifuge, wash, and dry to obtain CuFeO 2 ;

[0030] B) CuFeO 2 Tablet pressing and sieving were carried out, and a CuFe bimetallic catalyst was obtained through reduction and carbonization treatment.

[0031] The preparation method of the CuFe bimetallic catalyst provided by the invention first mixes iron nitrate nonahydrate, copper nitrate trihydrate and water to obtain a mixed solution.

[0032] The weight and volume of ferric nitrate nonahydrate, copper nitrate trihydrate, deionized water and propionaldehyde of the present invention are preferably 3.54~4.54g, 1.92~2.92g, 40~60mL respectively: 0.5~1.5mL; more preferably 4.04g , 2.42g, 50mL: 1mL.

[0033] The...

Embodiment 1

[0065] Preparation of CuFeO 2 , the preparation method is as follows:

[0066] First, at room temperature, 4.04 g of ferric nitrate nonahydrate and 2.42 g of copper nitrate trihydrate were dissolved in 50 ml of deionized water to form solution 1, and 8 g of sodium hydroxide was dissolved in 30 ml of deionized water to form solution 2. Then dropwise add solution 2 to solution 1 at a stirring rate of 400rpm, the rate of dropping is 1ml / min, continue stirring for 30min after the dropwise addition, then transfer the solution to a 100ml hydrothermal kettle, add 1ml propionaldehyde, Stir for 1 min, perform hydrothermal reaction at 180°C for 24 hours, cool to room temperature after the hydrothermal reaction, centrifuge at 10,000rpm for 3min to collect the product, wash with deionized water 2-3 times, then put the product in a vacuum oven at 60°C Under drying 12h obtains described CuFeO 2 .

Embodiment 2

[0068] Prepare CuFe bimetallic catalyst, preparation method is as follows:

[0069] Take by weighing the CuFeO prepared in 500mg embodiment 1 2 , After tableting and sieving, 20-40 mesh particles are obtained and filled into a quartz reaction tube with a diameter of 9mm. The quartz tube is filled into the reaction furnace, and pure hydrogen is introduced, and the reaction conditions are 400°C, 4bar, 100ml / min. Lower the reduction for 2 hours, and the heating rate is 5°C / min. After the reduction is completed, the reaction temperature is lowered to 320°C, and the hydrogen is switched to a mixed gas of carbon dioxide and hydrogen. The volume ratio of carbon dioxide and hydrogen in the mixed gas is 1:3. Under the reaction conditions of 320° C., 1 bar, and 20 ml / min, react for 2 hours to obtain the CuFe bimetallic catalyst.

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 provides a preparation method of a CuFe bimetallic catalyst, which comprises the following steps: A) mixing iron nitrate nonahydrate, copper nitrate trihydrate and water to obtain a mixed solution; dropwise adding alkali liquor into the mixed liquor, then adding propionaldehyde, stirring for hydrothermal reaction, cooling, centrifuging, washing and drying to obtain CuFeO2; and B) tabletting and sieving the CuFeO2, and carrying out reduction and carbonization treatment to obtain the CuFe bimetallic catalyst. By controlling the reaction conditions, the CuFe bimetallic catalyst with the Cu-Fe5C2 interface is obtained, and long-chain olefin can be prepared with high selectivity in the normal-pressure carbon dioxide hydrogenation reaction.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a CuFe bimetallic catalyst, a preparation method thereof and a preparation method of long-chain olefins. Background technique [0002] In recent years, the large-scale emission of carbon dioxide has caused a series of environmental problems. At the same time, carbon dioxide is also a potential carbon resource, especially high-purity carbon dioxide can be obtained from industries such as cement manufacturing, beer production and fuel processing. Utilization and transformation into high value-added chemicals have good environmental benefits and economic value. [0003] Long chain olefins (C 4+ ＝ ) is a versatile industrial feedstock for a variety of value-added products such as synthetic lubricants, high-octane gasoline, biodegradable detergents, novel polymers, agrochemicals, coatings and corrosion inhibitors. A common method for the synthesis of these olefins is based on the...

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): B01J23/745B01J37/03B01J37/10C07C1/12C07C11/02
CPCB01J37/10B01J37/03B01J23/745C07C1/12C07C11/02
Inventor 李钟灵李洪良吴文龙曾杰
Owner UNIV OF SCI & TECH OF CHINA
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com