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

Carbon dioxide (CO2) methanation catalyst as well as preparation method and application thereof

A technology for methanation catalyst and carbon dioxide, which is applied in the field of CO2 methanation catalyst and its preparation, can solve the problem of insufficient catalytic activity and high

Pending Publication Date: 2021-09-10
SHANGHAI INST OF TECH
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently widely used carriers include γ-Al 2 o 3 , CeO 2 , ZrO 2 , SiO 2 etc., where γ-Al 2 o 3 Due to the low price and relatively good performance, in CO 2 Ni-based catalysts are widely used in the methanation process, but Ni / γ-Al 2 o 3 The catalytic activity is not high enough

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
  • Carbon dioxide (CO2) methanation catalyst as well as preparation method and application thereof
  • Carbon dioxide (CO2) methanation catalyst as well as preparation method and application thereof
  • Carbon dioxide (CO2) methanation catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The present invention provides the preparation method of above-mentioned catalyst simultaneously, and this method is: Ni(NO 3 ) 2 Aqueous solution, Eu(NO 3 ) 2 The aqueous solution is mixed and added dropwise to γ-Al 2 o 3 powder, and stir evenly, and then dry and roast to obtain the catalyst.

[0028] Among them, Ni(NO 3 ) 2 The preparation process of the aqueous solution is as follows: Ni(NO 3 ) 2 ·6H 2 Dissolving O in water yields Ni(NO 3 ) 2 aqueous solution. Eu(NO 3 ) 2 The preparation process of the aqueous solution is: the Eu 2 o 3 Soluble in HNO 3 In aqueous solution, Eu(NO 3 ) 2 aqueous solution.

[0029] Stirring is carried out at room temperature. The drying temperature is 105-115°C, and the drying time is 6-12h. The roasting process is as follows: the temperature is raised from room temperature to 390-410 °C at a heating rate of 4-6 °C / min, and roasted for 3-5 hours.

[0030] The present invention also provides the application of above-...

Embodiment 1

[0033] a kind of Eu 2 o 3 Modified Ni / γ-Al 2 o3 Catalyst, which uses γ-Al 2 o 3 As the carrier, the metal Ni is the active component, and the Eu 2 o 3 As an auxiliary agent, the content of Ni accounts for 20% of the mass of the carrier, and Eu 2 o 3 The content accounts for 1% of the mass of the carrier.

[0034] The preparation method of above-mentioned catalyst specifically comprises the steps:

[0035] (1) Weigh 1.982g Ni(NO 3 ) 2 ·6H 2 O was placed in a crucible, and 2 g of deionized water was added to dissolve it to form Ni(NO 3 ) 2 Aqueous solution; weigh 0.02g Eu 2 o 3 Place in a crucible, add 0.3g of 69% HNO 3 dissolve it to form Eu(NO 3 ) 2 aqueous solution;

[0036] (2) Ni(NO) obtained in step (1) 3 ) 2 Aqueous solution, Eu(NO 3 ) 2 The aqueous solution is mixed and added dropwise to 2g γ-Al 2 o 3 In the powder, stir evenly at room temperature, then transfer to a drying oven, and dry overnight at 110°C;

[0037] (3) Transfer the mixture obtai...

Embodiment 2

[0039] a kind of Eu 2 o 3 Modified Ni / γ-Al 2 o 3 Catalyst, which uses γ-Al 2 o 3 As the carrier, the metal Ni is the active component, and the Eu 2 o 3 As an auxiliary agent, the content of Ni accounts for 20% of the mass of the carrier, and Eu 2 o 3 The content accounts for 3% of the mass of the carrier.

[0040] In the preparation method of above-mentioned catalyst, only the Eu weighed in the step (1) 2 o 3 The mass becomes 0.06g, namely Eu 2 o 3 The quality accounts for 3% of carrier quality, other is the same as embodiment 1, makes Eu 2 o 3 Modified Ni / γ-Al 2 o 3 Catalyst B.

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 relates to a CO2 methanation catalyst and a preparation method and application thereof. The catalyst adopts gamma-Al2O3 as a carrier, metal Ni as an active component and Eu2O3 as an auxiliary agent, wherein the mass of the metal Ni accounts for 3-25% of the mass of the carrier, and the mass of the Eu2O3 accounts for 1-8% of the mass of the carrier. The preparation method comprises the following steps: mixing an aqueous Ni(NO3)2 solution and an aqueous Eu(NO3)2 solution, dropwise adding an obtained mixed solution into gamma-Al2O3 powder, and successively conducting uniform stirring, drying and roasting to obtain the catalyst which is used for catalyzing hydrogenation of CO2 to synthesize methane. Compared with the prior art, the catalyst for synthesis of methane through CO2 hydrogenation provided by the invention has the advantages that due to the addition of Eu2O3, interaction between the active component Ni and the carrier gamma-Al2O3 is promoted, high dispersion of Ni is facilitated, the adsorption of the catalyst to CO2 is improved, and the catalytic activity of CO2 methanation is further improved.

Description

technical field [0001] The invention belongs to CO 2 The technical field of hydrogenation methane synthesis relates to a CO 2 Methanation catalyst and its preparation method and application. Background technique [0002] CO 2 is the main greenhouse gas. With the rapid development of industrialization, fossil fuels are used in large quantities, which leads to the CO in the atmosphere 2 The concentration continues to rise, which in turn causes many environmental problems related to the greenhouse effect. [0003] CO 2 It is also an important carbon source. will CO 2 Conversion into methanol, ethanol, dimethyl ether, methane and other organic chemicals or fuels has good commercial value and development prospects. Methane, the main component of natural gas, can be transported using existing natural gas infrastructure and distribution networks compared to other stored fuels (methanol, ethanol, dimethyl ether, etc.). Therefore, CO 2 Methanation can realize the transition...

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): B01J23/83B01J37/02B01J37/08B01J37/18C07C1/12C07C9/04
CPCB01J23/83B01J23/002B01J37/0201B01J37/088B01J37/18C07C1/12C07C2523/83C07C9/04
Inventor 张亚欣郭晓明王爱民王根礼王嵩毛东森
Owner SHANGHAI INST OF TECH