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

Aluminum oxide loaded methanation catalyst

A methanation catalyst, alumina supported technology, used in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, hydrocarbon production from carbon oxides, etc., can solve the reaction stability and sulfur resistance. Insufficient, deactivated, catalyst catalytic activity decline and other problems

Active Publication Date: 2013-07-17
CHNA ENERGY INVESTMENT CORP LTD +1
View PDF7 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the catalysts disclosed in the above patent documents have certain improvements in terms of carbon monoxide conversion and methane selectivity compared to traditional catalysts, they have deficiencies in reaction stability and sulfur resistance. 2 For synthesis gas raw materials with an acid gas content greater than 1ppm such as S, the catalytic activity of the above-mentioned catalysts may be significantly reduced or rapidly deactivated, which will lead to shortened catalyst life. At the same time, the raw materials for the production of the above-mentioned catalysts, such as CeO 2 and La 2 o 3 They are expensive, so they can't achieve a good balance and balance between performance and production costs

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
  • Aluminum oxide loaded methanation catalyst
  • Aluminum oxide loaded methanation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1: Preparation of 1.4MoO 3 +0.7WO 3 / 17.5NiO / 100Al 2 o 3 methanation catalyst

[0074] Step (1): Preparation of Al by precipitation method 2 o 3 porous carrier

[0075] Al(NO 3 ) 3 9H 2 O is made into the aqueous solution that concentration is 0.5 mol / liter, then the ammoniacal liquor that concentration is 25% by weight is diluted 10 times with deionized water as precipitant solution. Put 30% precipitant solution into the container, and the remaining precipitant solution is mixed with Al(NO 3 ) 3 9H 2 O aqueous solution was added to the container together, and by adjusting the precipitant solution and Al(NO 3 ) 3 9H 2 The flow rate of the O aqueous solution controls the pH value of the solution to 9-10, and the above two solutions undergo a precipitation reaction in the container to produce Al(OH) 3 Precipitate, after the precipitation reaction ends, continue to stir the solution for 2 hours, after that, stand and age the above-mentioned soluti...

Embodiment 2

[0080] Embodiment 2: Preparation of 1.3MoO 3 +1 WO 3 / 17.5NiO / 100Al 2 o 3 methanation catalyst

[0081] Step (1): Preparation of Al by precipitation method 2 o 3 porous carrier

[0082] Repeat the process of step (1) in Example 1 to obtain active Al 2 o 3 A porous carrier with a BET specific surface area of ​​198m 2 / g.

[0083] Step (2): Preparation of 1.3MoO by impregnation method 3 +1 WO 3 / 17.5NiO / 100Al 2 o 3 methanation catalyst

[0084] In addition to ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 4H 2 O), ammonium metatungstate ((NH 4 ) 6 W 7 o 24 ·6H 2O) the weight becomes 0.40 gram, 0.29 gram successively, repeat the process of step (2) in the embodiment 1, obtain 1.3MoO 3 +1 WO 3 / 17.5NiO / 100Al 2 o 3 A methanation catalyst having a BET-determined specific surface area of ​​140m 2 / g.

Embodiment 3

[0085] Embodiment 3: Preparation of 0.9MoO 3 +1.5WO 3 / 17.5NiO / 100Al 2 o 3 methanation catalyst

[0086] Step (1): Preparation of Al by precipitation method 2 o 3 porous carrier

[0087] Repeat the process of step (1) in Example 1 to obtain active Al 2 o 3 A porous carrier with a BET specific surface area of ​​198m 2 / g.

[0088] Step (2): Preparation of 0.9MoO by impregnation method 3 +1.5WO 3 / 17.5NiO / 100Al 2 o 3 methanation catalyst

[0089] In addition to ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 4H 2 O), ammonium metatungstate ((NH 4 ) 6 W 7 o 24 ·6H 2 O) the weight becomes 0.28 gram, 0.43 gram successively, repeat the process of step (2) in the embodiment 1, obtain 0.9MoO 3 +1.5WO 3 / 17.5NiO / 100Al 2 o 3 A methanation catalyst having a BET specific surface area of ​​142m 2 / g.

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses an aluminum oxide loaded methanation catalyst which comprises the following components in parts by weight: 0.5-20 parts of a catalyst additive WO3 and / or MoO3, 5-90 parts of a catalyst active component NiO, 0-90 parts of a carrier modifier (M) AOB and 100 parts of a porous carrier Al2O3, wherein M refers to Ce, Zr, Ti, Mg and / or Si.

Description

technical field [0001] The present invention relates to a kind of catalyst of methanation reaction, specifically, relate to a kind of synthesis gas effective component CO and H containing acid gas such as hydrogen sulfide 2 converted to CH 4 The methanation reaction catalyst, wherein, the catalyst is composed of a catalyst promoter, a catalyst active component, a carrier modifier and a porous carrier. At the same time, the invention also relates to a preparation method of the catalyst. Background technique [0002] The methanation reaction refers to the reaction of CO in the synthesis gas with H under the action of certain temperature, pressure and catalyst. 2 The process of reacting to form methane. Its reaction formula can be expressed as follows: [0003] CO+3H 2 =CH 4 +H 2 O (1) [0004] CO+H 2 O=CO 2 +H 2 (2) [0005] 2CO+2H 2 =CH 4 +CO 2 (3) [0006] It is generally believed that the methanation reaction of syngas is one of the best solutions for ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888B01J23/883C07C9/04C07C1/04
Inventor 田大勇次东辉秦绍东杨霞孙守理孙琦
Owner CHNA ENERGY INVESTMENT CORP LTD