Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nickel-gallium alloy catalyst as well as preparation method and application thereof

A technology of alloy catalyst and catalyst, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., and can solve the problem of difficult to obtain carbon nanotubes, sintered growth, carbon nanomaterials Shape and size are difficult to control and other problems, to achieve good anti-sintering ability, reduce the degree of metal sintering, and good catalytic performance

Pending Publication Date: 2021-04-27
FUZHOU UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, under the medium and low temperature conditions of 500‒650°C, mainly octopus-shaped or large-diameter carbon nanofibers are formed, and it is difficult to obtain carbon nanotubes.
Secondly, Ni‒Cu alloys are prone to sintering and growth during the reaction process, and their diameters can reach 50 nm or even more than 100 nm, which poses great difficulties in controlling the morphology and size of carbon nanomaterials.

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
  • Nickel-gallium alloy catalyst as well as preparation method and application thereof
  • Nickel-gallium alloy catalyst as well as preparation method and application thereof
  • Nickel-gallium alloy catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A nickel-gallium alloy catalyst, the specific preparation steps are as follows: Weigh 20g of NaOH solid, dissolve it in 250mL of deionized water, and prepare a 2 mol / L NaOH aqueous solution as a precipitant. Weigh 8.3894g Ni(NO 3 ) 2 ·6H 2 O, 1.3391g Ga(NO 3 ) 3 9H 2 O, 4.0084g Al(NO 3 ) 3 9H 2 O was dissolved in 100 mL deionized water to obtain a mixed solution of metal salts. Weigh 0.7361g Na 2 CO 3 Dissolve in 100 mL deionized water as the base solution. The metal salt mixed solution was dropped into Na at a rate of 30 drops / min using a dropping funnel. 2 CO 3 solution with constant stirring. At the same time, use a peristaltic pump to drip NaOH solution into the solution at a rate of 30 drops / min, maintain the pH of the solution = 10 ± 0.5, continue stirring for 1 h after the addition is complete, then let it stand for 24 h, filter and wash with deionized water to pH = 7 ± 0.2, the filter cake was dried at 100°C for 12 h to obtain a hydrotalcite-like p...

Embodiment 2

[0041] A nickel-gallium alloy catalyst, the specific preparation steps are as follows: Weigh 20g of NaOH solid, dissolve it in 250mL of deionized water, and prepare a 2 mol / L NaOH aqueous solution as a precipitant. Weigh 7.3086g Ni(NO 3 ) 2 ·6H 2 O, 2.6248g Ga(NO 3 ) 3 9H 2 O, 3.9285g Al(NO 3 ) 3 9H 2 O was dissolved in 100 mL deionized water to obtain a mixed solution of metal salts. Weigh 0.8880g Na 2 CO 3 , dissolved in 100 mL deionized water as the base solution. The metal salt mixed solution was dropped into Na at a rate of 30 drops / min using a dropping funnel. 2 CO 3 solution with constant stirring. At the same time, use a peristaltic pump to drip NaOH solution into the solution at a rate of 30 drops / min, maintain the pH of the solution = 10 ± 0.5, continue stirring for 1 h after the addition is complete, then let it stand for 24 h, filter and wash with deionized water to pH = 7 ± 0.2, the filter cake was dried at 100°C for 12 h to obtain a hydrotalcite-lik...

Embodiment 3

[0049] A nickel-gallium alloy catalyst, the specific preparation steps are as follows: Weigh 20g of NaOH solid, dissolve it in 250mL of deionized water, and prepare a 2 mol / L NaOH aqueous solution as a precipitant. Weigh 6.7842g Ni(NO 3 ) 2 ·6H 2 O, 3.2487g Ga(NO 3 ) 3 9H 2 O, 3.8897g Al(NO 3 ) 3 9H 2 O was dissolved in 100 mL deionized water to obtain a mixed solution of metal salts. Weigh 0.9616g Na 2 CO 3 , dissolved in 100 mL deionized water as the base solution. The metal salt mixed solution was dropped into Na at a rate of 30 drops / min using a dropping funnel. 2 CO 3solution with constant stirring. At the same time, use a peristaltic pump to drip NaOH solution into the solution at a rate of 30 drops / min, maintain the pH of the solution = 10 ± 0.5, continue stirring for 1 h after the addition is complete, then let it stand for 24 h, filter and wash with deionized water to pH = 7 ± 0.2, the filter cake was dried at 100°C for 12 h to obtain a hydrotalcite-like...

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

PropertyMeasurementUnit
Average grain sizeaaaaaaaaaa
Average grain sizeaaaaaaaaaa
Outer diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a nickel-gallium alloy catalyst as well as a preparation method and application thereof. According to the catalyst, Al2O3 is used as a carrier, Ni is used as an active component, Ga is used as an auxiliary agent, and Ni-Ga alloy is used as an active phase. Firstly, a Ni-Ga-Al hydrotalcite precursor is synthesized by adopting a coprecipitation method, and then the Ni-Ga / Al2O3 alloy catalyst is prepared through 500 DEG C air roasting and 800 DEG C hydrogen reduction treatment. The Ni-Ga / Al2O3 (Ga / Ni = 1 / 4) alloy catalyst provided by the invention not only significantly improves the yields of hydrogen and carbon in the methane cracking reaction at 600 DEG C, but also shows good anti-sintering performance.

Description

technical field [0001] The invention belongs to the technical field of alloy catalyst preparation, and in particular relates to a nickel-gallium alloy catalyst and its preparation method and application. Background technique [0002] Hydrogen is considered as a clean fuel due to its wide source, renewable, high calorific value, low pollution, and only water produced during combustion, which is an ideal fuel for fuel cells. Therefore, the development of hydrogen fuel cells is of great significance to solve the problems of increasing shortage of fossil fuels and air pollution caused by the combustion of fossil fuels. The current industrial production of hydrogen is mainly based on steam reforming and partial oxidation of natural gas. However, these technologies generate large amounts of carbon dioxide and carbon monoxide. Carbon dioxide is a greenhouse gas, while carbon monoxide is a poison that easily poisons the Pt electrodes of fuel cells. Therefore, the mixed gas of hyd...

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): B01J23/825B01J37/03B01J37/08B01J37/18C01B3/26C01B32/162
CPCB01J23/825B01J37/031B01J37/082B01J37/18C01B3/26C01B32/162C01B2203/0277C01B2203/1058C01B2203/1082C01B2203/1094C01B2202/36B01J35/393B01J35/23
Inventor 李达林黄敏江莉龙
Owner FUZHOU UNIV
Features
  • Generate Ideas
  • 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