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Zirconium-aluminum composite oxide-loaded nickel-base methanation catalyst and preparation method thereof

A methanation catalyst and composite oxide technology, applied in the petroleum industry, gas fuel, fuel, etc., can solve the problems that restrict the development of syngas methanation, carbon deposition deactivation, high-temperature sintering deactivation, etc., and achieve small particle size, anti-corrosion Good carbon properties and good low temperature activity

Inactive Publication Date: 2017-05-31
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Coal-to-natural gas methanation catalysts mainly have high temperature sintering deactivation and carbon deposition deactivation, which seriously restricts the development of syngas methanation

Method used

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  • Zirconium-aluminum composite oxide-loaded nickel-base methanation catalyst and preparation method thereof
  • Zirconium-aluminum composite oxide-loaded nickel-base methanation catalyst and preparation method thereof
  • Zirconium-aluminum composite oxide-loaded nickel-base methanation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 75.00g Al 2 o 3 and 25.00 g ZrO 2 Mix, use a ball mill to mix evenly, then add 15.00g of carbon black pore-forming agent and mix evenly, pass through a 200-mesh sieve, add 3mL of water, mix evenly, and use a ring press machine to press Φ6×6mm into a columnar shape. The columnar mixture was dried in an oven at 120°C for 8 hours, and then placed in a muffle furnace for calcination at 950°C for 5 hours to obtain a zirconium-aluminum composite oxide support.

[0029] The above support was added to an excess of 1.65 g / mL Ni(NO 3 ) 2 ·6H 2 O and 0.18g / mLLa(NO 3 ) 3 ·6H 2 Immerse in a mixed solution of O for 0.5h, take out the solid after immersion, dry in an oven at 120°C for 8h, and then place it in a muffle furnace for calcination at 400°C for 5h to obtain a nickel-based methanation catalyst supported by zirconium-aluminum composite oxide.

Embodiment 2

[0031] 43.75g Al 2 o 3 and 46.25 g ZrO 2 Mix, use a ball mill to mix evenly, then add 20.00g of carbon black pore-forming agent and mix evenly, pass through a 200-mesh sieve, add 3mL of water, mix evenly, and press it into a columnar shape with a ring press machine according to Φ6×6mm. The columnar mixture was dried in an oven at 100° C. for 10 h, and then placed in a muffle furnace for calcination at 1000° C. for 5 h to obtain a zirconium-aluminum composite oxide support.

[0032] The above support was added to an excess of 1.68 g / mL Ni(NO 3 ) 2 ·6H 2 O and 0.17g / mLCe(NO 3 ) 4 ·6H 2 Immerse in a mixed solution of O for 1 hour, take out the solid after immersion, dry in an oven at 100°C for 10 hours, and then bake in a muffle furnace at 400°C for 5 hours to obtain a nickel-based methanation catalyst supported by zirconium-aluminum composite oxide.

Embodiment 3

[0034] This example is a comparative example. Compared with Example 1, the catalyst carrier in this example does not add pore-forming agent carbon black, and the rest of the conditions are the same as Example 1.

[0035] 43.75g Al 2 o 3 and 46.25 g ZrO 2 Mix, use a ball mill to mix evenly, pass through a 200-mesh sieve, add 3mL of water, mix evenly, and use a ring press machine to press Φ6×6mm to form a columnar shape. The columnar mixture was dried in an oven at 100° C. for 10 h, and then placed in a muffle furnace for calcination at 1000° C. for 5 h to obtain the comparative carrier.

[0036] The above comparative support was added to an excess of 1.68 g / mL Ni(NO 3 ) 2 ·6H 2 O and 0.17g / mLCe(NO 3 ) 4 ·6H 2 Immerse in a mixed solution of O for 1 hour, take out the solid after soaking, dry in an oven at 100°C for 10 hours, and then place it in a muffle furnace for calcination at 400°C for 5 hours to obtain a comparative catalyst without carbon black pore-forming agent....

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Abstract

The invention discloses a zirconium-aluminum composite oxide-loaded nickel-base methanation catalyst and a preparation method thereof, which solve the problems in the prior art such as the high temperature sintering deactivation of the methanation catalyst and the deactivation of carbon deposition. The catalyst comprises a catalyst carrier and an active component and an additive loaded on the catalyst carrier; the carrier comprises Al2O3 and ZrO2, raw materials of the carrier also comprise bore-forming agent carbon black, and the carbon black is volatilized by virtue of high temperature calcining in the preparation process of the carrier; the active component is nickel nitrate; and the additive is selected from one or two of salts of zirconium, lanthanum, cerium and samarium. According to the catalyst, after the carrier is prepared, the additive and the active component are simultaneously loaded. The catalyst is large in specific surface area, high in strength, good in activity, good in stability, excellent in carbon resistance, simple in preparation method and low in cost.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and mainly relates to a nickel-based methanation catalyst supported by a zirconium-aluminum composite oxide and a preparation method thereof. Background technique [0002] In recent years, the coal-to-natural gas industry with methanation as the core technology has developed vigorously in China. As a high-quality, efficient and clean energy, natural gas can reduce the emission of carbon dioxide, sulfur dioxide, nitrogen oxides and dust that cause air pollution. The gap between supply and demand in the domestic natural gas market is huge, and the dependence on foreign countries is high. Converting synthetic gas into methane to replace natural gas is one of the important ways to supplement the natural gas market. At present, domestic coal-to-natural gas methanation projects mainly rely on mature foreign methanation technology, and it is necessary to develop methanation technology with in...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/83C10L3/08
CPCB01J23/755B01J23/83C10L3/08
Inventor 凡美婷谭青王雪峰胡彭冯雅晨曾凌云刘玉成何洋
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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