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

Mesoporous hexaaluminate nickel supported methanation catalyst and preparation method thereof

A methanation catalyst, mesoporous hexaaluminate technology, applied in the field of methanation catalysis, can solve the problems of narrow catalyst activity temperature range, complex catalyst preparation process, catalyst carbon deposition and deactivation, etc., to achieve high activity and catalytic efficiency, The effect of low loading and easy process control

Active Publication Date: 2012-12-26
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF9 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The methanation catalysts introduced in the above patent documents have the following deficiencies: on the one hand, the composition of some catalysts is relatively complex, and one or more additives need to be added, which leads to a complicated preparation process of the catalyst and an increase in cost; on the other hand, the carbon deposition and deactivation of the catalyst Serious, the service life is short; in addition, the active temperature range of the catalyst is narrow, once the heat released by the reaction is not discharged in time, it will lead to the sintering of the catalyst and the decrease of catalytic efficiency

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
  • Mesoporous hexaaluminate nickel supported methanation catalyst and preparation method thereof
  • Mesoporous hexaaluminate nickel supported methanation catalyst and preparation method thereof
  • Mesoporous hexaaluminate nickel supported methanation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1. Preparation of mesoporous barium hexaaluminate:

[0055] 1.0g of the prepared mesoporous carbon (the mesoporous carbon is prepared by the method in the document J.Am.Chem.Soc.2006, 128, 11652. The obtained mesoporous carbon has a pore wall thickness of 6.0nm and a mesoporous size of 6.2nm) Immerse in 15 mL of nitric acid with a concentration of 5.0 mol / L, wherein the mass ratio of carbon material to solvent is 1:15, treat at 40 ° C for 3 h, filter, wash and dry to obtain functionalized mesoporous carbon, and then highly disperse it in In 10mL ethanol, obtain suspension A; Take by weighing 4.5g aluminum nitrate, 0.26g barium nitrate and be dissolved in the mixed solution of 20mL water and ethanol (water / ethanol volume ratio is 1: 3), the salt precursor and solvent The mass ratio is 1:4.2, and the salt precursor solution B is prepared; then solution B is added to A, and the resulting mixture is stirred at 20°C and evaporated to dryness to obtain a salt / carbon composite...

Embodiment 2

[0067] 1. Preparation of mesoporous barium hexaaluminate:

[0068] Preparation of mesoporous barium hexaaluminate: immerse 1.0 g of prepared mesoporous carbon (pore wall thickness 9.4 nm, mesopore size 7.0 nm) in 10 mL of hypochlorous acid solution with a concentration of 2.0 mol / L, wherein the carbon material and The mass ratio of the solvent is 1:10, treated at 40°C for 8 hours, filtered, washed and dried to obtain functionalized mesoporous carbon, and then highly dispersed in 10mL of ethanol to obtain suspension A; weigh 4.5g of aluminum nitrate , 0.25g barium acetate is dissolved in the mixed solution of 38mL water and acetone (water / acetone volume ratio is 3: 1), the mass ratio of salt precursor and solvent is 1: 8, makes salt precursor solution B; Then Add solution B to A, stir the resulting mixture at 40°C, and evaporate to dryness to obtain a salt / charcoal compound; put the salt / charcoal compound into a sand core funnel, place it in a 20mL container with a concentratio...

Embodiment 3

[0075] 1. Preparation of mesoporous barium hexaaluminate:

[0076] Immerse 1.0 g of the prepared mesoporous carbon (pore wall thickness 8.0 nm, mesopore size 6.5 nm) in 5 mL of 8.0 mol / L sulfuric acid, wherein the mass ratio of carbon material to solvent is 1:5, and treat at 90 ° C After 5h, filter, wash and dry to obtain functionalized mesoporous carbon, then highly disperse it in 10mL ethanol to obtain suspension A; weigh 13.5g aluminum nitrate, 0.75g barium acetate and dissolve in 28.5mL water and propanol In the mixed solution (water / propanol volume ratio is 1:1), the mass ratio of the salt precursor to the solvent is 1:2, and the salt precursor solution B is obtained; then solution B is added to A, and the resulting mixed solution Stir at 50°C and evaporate to dryness to obtain the salt / charcoal composite; put the salt / carbon composite into a sand core funnel, place it in a hydrothermal kettle with 20mL of 2.0mol / L urea aqueous solution, and place it at 110 After standin...

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
Mesopore diameteraaaaaaaaaa
Specific surface areaaaaaaaaaaa
Pore volumeaaaaaaaaaa
Login to View More

Abstract

The invention, relating to the field of methanation catalysis, particularly relates to a mesoporous hexaaluminate nickel supported methanation catalyst and a preparation method thereof. The method comprises the following steps: 1) preparing a mesoporous hexaaluminate carrier: 1-1) pretreating a carbon material, and preparing a mesoporous carbon suspending liquid; 1-2) preparing an aluminum salt precursor and one or more of alkaline earth, rare earth metal, and transition metal precursor into a solution; 1-3) adding the metal salt precursor solution in the mesoporous carbon suspending liquid to obtain a salt-carbon composite; 1-4) reacting the salt-carbon composite with a nitrogen-containing compound to obtain a hexaaluminate precursor-carbon composite; 1-5) further dipping the hexaaluminate precursor-carbon composite in a salt precursor, and roasting to obtain mesoporous hexaaluminate; 2) preparing the mesoporous hexaaluminate nickel supported methanation catalyst: immersing the mesoporous hexaaluminate carrier in a nickel-containing solution, stirring, drying and roasting to obtain the mesoporous hexaaluminate nickel supported methanation catalyst.

Description

technical field [0001] The invention relates to the field of methanation catalysis, in particular, the invention relates to a nickel-based methanation catalyst supported by mesoporous hexaaluminate and a preparation method thereof. Background technique [0002] my country's "Twelfth Five-Year Plan" particularly emphasizes the development of coal-to-natural gas technology in the energy field. The high effective utilization rate of coal-to-methane thermal energy is not only of great significance to the efficient and clean comprehensive utilization of coal, but also provides a practical way for the efficient utilization of coke oven gas and the supplement of my country's natural gas gap. Synthesis gas can be produced from coal through gasification, and can also be converted into pyrolysis gas, tar and semi-coke through pyrolysis. my country's coking industry also produces a large amount of coke oven gas by-products. Among these synthesis gas, pyrolysis gas and coke oven gas Bot...

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): B01J23/78B01J23/83B01J23/889B01J35/10C07C1/04C07C9/04
Inventor 苏发兵古芳娜高加俭平原王莹利翟世辉
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com