High-temperature-resistant methanation catalyst and preparation method thereof

A methanation catalyst, high-temperature-resistant technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as deactivation of methanation catalysts, and achieve High specific surface area, high thermal stability, and stable activity

Active Publication Date: 2016-07-27
XIAN SUNWARD AEROSPACE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-temperature-resistant methanation catalyst, which solves the problem of Ni / Al destabilization caused by the sintering of active nickel microcrystals and the instability of the carrier under high water-steam ratio conditions. 2 o 3 Problems with Methanation Catalyst Deactivation at High Temperatures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dissolve 136.3g of nickel nitrate in 350mL of water to form an impregnating solution; add 465.0g of mesoporous nickel aluminate spinel carrier into the impregnating solution and immerse it at 50℃ for 2h; the resulting product is baked at 100℃ for 4h at 500 Calcined at ℃ for 5h to obtain the catalyst product.

[0022] The composition of the catalyst obtained in Example 1 is NiO7%, and the carrier is NiAl 2 O 4 93%.

Embodiment 2

[0024] Dissolve 194.7g nickel nitrate and 64.1g magnesium nitrate in 320mL water to form an impregnation solution; add 440.0g mesoporous nickel aluminate spinel carrier to the impregnation solution and immerse it at 50℃ for 2h; the resulting product is baked at 100℃ 4h, calcined at 500℃ for 5h to get the catalyst product.

[0025] The composition of the catalyst obtained in Example 2 is NiO10%, and the carrier is NiAl 2 O 4 88%, auxiliary MgO2%.

Embodiment 3

[0027] Dissolve 194.7g nickel nitrate, 96.2g magnesium nitrate and 63.3g calcium nitrate in 300mL water to form an impregnation solution; add 420.0g mesoporous nickel aluminate spinel carrier to the impregnation solution and immerse it at 50°C for 2h; The product was baked at 100°C for 4 hours and calcined at 500°C for 5 hours to obtain the finished catalyst.

[0028] The composition of the catalyst obtained in Example 3 is NiO10%, the carrier NiAl 2 O 4 84%, additives MgO3%, CaO3%.

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PUM

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Abstract

The invention discloses a high-temperature-resistant methanation catalyst. The high-temperature-resistant methanation catalyst comprises an active component, a carrier and / or an assistant. Nickel serves as the active component, the carrier is mesoporous nickel aluminate spinel, and the assistant is one or more of oxides of alkaline earth metals magnesium, calcium, strontium and barium. The invention further discloses a preparation method of the high-temperature-resistant methanation catalyst. Soluble nickel salt and soluble salt of the assistant are dissolved in water to form impregnation liquid; the mesoporous nickel aluminate spinel carrier is added to the impregnation liquid for impregnation, then drying and calcination are conducted, and then the high-temperature-resistant methanation catalyst is obtained. The high-temperature-resistant methanation catalyst is used at high temperature, the anti-sintering capacity of active center nickel is high, and activity is stable. The production method is simple, and industrial enlarged production is promoted.

Description

Technical field [0001] The invention belongs to the technical field of catalysts and their preparation, and specifically relates to a high-temperature-resistant methanation catalyst. The invention also relates to a preparation method of the catalyst. Background technique [0002] With the rapid development of social economy and the improvement of people's living standards, my country's demand for energy is also increasing. The current domestic energy structure is typically "more coal, less oil, and gas", and the combustion of coal will produce a large amount of nitrogen oxides and dust, leading to acid rain, photochemical smog, and serious air pollution. Natural gas has the advantages of high combustion calorific value, environmental protection, safety and pollution-free, and the proportion of energy in the country is increasing day by day, but domestic natural gas production is small, and the supply and demand gap is large. Coal-synthesized natural gas (SNG) and coke oven gas m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/78C10L3/08
CPCB01J23/002B01J23/755B01J23/78B01J2523/00C10L3/08B01J2523/31B01J2523/847B01J2523/22B01J2523/23B01J2523/25
Inventor 许龙龙贺强彭东冯毅敏王国妮封超徐驰尚克家金义
Owner XIAN SUNWARD AEROSPACE MATERIAL CO LTD
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