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Supported bimetallic reforming catalyst and preparation method and application thereof

A reforming catalyst and bimetallic technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. Microstructure, difference in anti-coking ability, different catalyst reactivity and selectivity, etc., to achieve high catalytic activity and anti-coking performance, convenient operation, and easy control of synthesis conditions

Active Publication Date: 2017-06-30
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if it is the same active component, the difference in preparation method will affect the particle size, dispersion, reducibility and microstructure of the catalyst, which will cause significant differences in catalyst reactivity and selectivity. There are also significant differences in ability

Method used

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  • Supported bimetallic reforming catalyst and preparation method and application thereof
  • Supported bimetallic reforming catalyst and preparation method and application thereof
  • Supported bimetallic reforming catalyst and preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] Adopt the inventive method to prepare a kind of highly active bimetallic methane carbon dioxide reforming catalyst, comprise the steps:

[0035] (1) Dissolve 0.7946g nickel nitrate and 0.1976g cobalt nitrate in 20mL deionized water to make mixed solution A;

[0036] (2) Weigh 0.8194g urea and dissolve it in 60mL deionized water to obtain solution B;

[0037] (3) Add 2g of magnesium oxide carrier to solution A, stir at 80°C for 2 hours to obtain solution C;

[0038] (4) Add solution B to solution C, adjust the addition rate (8mL / min) to ensure that the pH of the mixed system is around 10, and keep the mixed system at 80°C for 8 hours after the addition is complete;

[0039] (5) Suction filter, wash, dry at 100° C. for 6 hours, and calcinate at 800° C. for 10 hours to obtain a supported bimetallic methane carbon dioxide reforming catalyst.

Embodiment 2

[0041] Adopt the inventive method to prepare a kind of highly active bimetallic methane carbon dioxide reforming catalyst, comprise the steps:

[0042] (1) Dissolve 0.2435g nickel chloride and 0.1615g cobalt chloride in 10mL deionized water to make mixed solution A;

[0043] (2) Weigh 0.1023g urea and dissolve it in 10mL deionized water to obtain solution B;

[0044] (3) Add 1 g of alumina carrier to solution A, stir at 30°C for 2 hours to obtain solution C;

[0045] (4) Add solution B to solution C, adjust the addition rate (5mL / min) to ensure that the pH of the mixed system is around 8, and keep the mixed system at 60°C for 15 hours after the addition is complete;

[0046] (5) Suction filter, wash, dry at 80° C. for 12 hours, and calcinate at 600° C. for 16 hours to obtain a supported bimetallic methane carbon dioxide reforming catalyst.

Embodiment 3

[0048] Adopt the inventive method to prepare a kind of highly active bimetallic methane carbon dioxide reforming catalyst, comprise the steps:

[0049] (1) Dissolve 0.4966g nickel nitrate and 0.0.4770g cobalt sulfate in 30mL deionized water to make mixed solution A;

[0050] (2) Weigh 0.4086g sodium hydroxide and dissolve it in 60mL deionized water to obtain solution B;

[0051] (3) Add 2 g of magnesium oxide carrier to solution A, stir at 50°C for 2 hours to obtain solution C;

[0052] (4) Add solution B to solution C, adjust the addition rate (12mL / min) to ensure that the pH of the mixed system is around 12, and keep the mixed system at 100°C for 8 hours after the addition is complete;

[0053] (5) Suction filter, wash, dry at 150° C. for 5 h, and calcinate at 600° C. for 10 h to obtain a supported bimetallic methane carbon dioxide reforming catalyst.

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Abstract

The invention discloses a supported bimetallic reforming catalyst and a preparation method and an application thereof. The catalyst is characterized in that active components metallic nickel and metallic cobalt are supported on an oxide carrier, wherein the mass ratio of the oxide carrier to metallic nickel to metallic cobalt is 1: 0.01-0.1: 0.01-0.1; and the oxide carrier is one of magnesium oxide, alumina, silica, cerium oxide and zirconia. The preparation method is characterized in that a deposition-precipitation method is employed, a precipitating agent is slowly added in a solution of the oxide carrier, metallic nickel and metallic cobalt, a reaction is carried out, and steps of pumping filtration, washing, drying and calcining are carried out to obtain the catalyst. The catalyst solves the problems of poor anti-carbon formation capability, complex preparation method and high catalyst cost in the prior art. The whole preparation has the advantages of simple process, convenient operation, and easy control of the synthesis condition, and the prepared catalyst has high catalytic activity and anti-carbon formation performance.

Description

technical field [0001] The invention relates to a supported bimetallic reforming catalyst and its preparation method and application, belonging to the technical field of catalyst preparation. Background technique [0002] Methane carbon dioxide reforming to synthesis gas has broad application prospects in efficient utilization of natural gas, energy transmission, and solving increasingly serious environmental problems. However, the reaction conditions of methane carbon dioxide reforming to synthesis gas are just in the thermodynamic carbon deposition zone, and the development of efficient, stable and high carbon deposition-resistant catalysts is a key issue for the industrialization of this process. At present, a lot of research is focused on noble metals and nickel-based catalysts. The former is expensive, and the latter has poor stability due to serious carbon deposition. [0003] In recent years, researchers have achieved the purpose of improving the anti-coking performa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/78B01J23/83C01B3/40
CPCB01J23/78B01J23/83C01B3/40C01B2203/0238C01B2203/1058C01B2203/1082C01B2203/1241Y02P20/52
Inventor 荆洁颖郄志强李清李婷玉霍俊梅冯杰李文英
Owner TAIYUAN UNIV OF TECH
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