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Method for preparing nickel-based methane dry reforming catalyst

A technology for dry reforming of methane and nickel-based methane, applied in molecular sieve catalysts, chemical instruments and methods, catalysts for physical/chemical processes, etc. problems, to achieve excellent hydrothermal stability, good catalyst structure retention, and the effect of inhibiting sintering

Inactive Publication Date: 2019-04-19
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sintering of the active component Ni will reduce the number of active centers of the catalyst, thereby reducing the reaction activity; while the generated carbon deposits will cover the active sites and block the pores of the catalyst, thereby affecting the diffusion of reactants and products.

Method used

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  • Method for preparing nickel-based methane dry reforming catalyst

Examples

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Embodiment 1

[0032]Weigh 0.37g Ni(acac) 2 , 1.14g oleic acid, put into vials, and seal with polytetrafluoroethylene tape. Put the mixture into a dry box and set it at 105°C to heat and dissolve for about 2 hours. Weigh 5.88g TEOS and 0.894g APTES and put them into small test tubes. Add 115ml of deionized water and 50ml of ethanol into the three-neck flask, start stirring, add oleic acid and the mixture in the small test tube in turn with a dropper during stirring, and then stir vigorously for 5 minutes. After the stirring is completed, let stand for 2h. Subsequently, in an oil bath at 80 °C for 24 h. After the oil bath was completed, it was filtered with suction and washed twice with deionized water. Put the suction-filtered product together with the filter paper into a drying oven at 105°C for 5 to 6 hours. After drying, remove the filter paper, grind the sample to powder, and then use a muffle furnace to roast at 800 ° C for 2 hours, using a program to increase the temperature by 2 ...

Embodiment 2

[0036] Weigh 0.185g Ni(acac) 2 , 1.14g oleic acid, put into vials, and seal with polytetrafluoroethylene tape. Put the mixture into a dry box and set it at 105°C to heat and dissolve for about 2 hours. Weigh 5.88g TEOS and 0.894g APTES and put them into small test tubes. Add 115ml of deionized water and 50ml of ethanol into the three-neck flask, start stirring, add oleic acid and the mixture in the small test tube in turn with a dropper during stirring, and then stir vigorously for 5 minutes. After the stirring is completed, let stand for 2h. Subsequently, in an oil bath at 80 °C for 24 h. After the oil bath was completed, it was filtered with suction and washed twice with deionized water. Put the suction-filtered product together with the filter paper into a drying oven at 105°C for 5 to 6 hours. After drying, remove the filter paper, grind the sample to powder, and then use a muffle furnace to roast at 800 ° C for 2 hours, using a program to increase the temperature by ...

Embodiment 3

[0040] Weigh 0.37g Ni(acac) 2 , 1.14g oleic acid, put into vials, and seal with polytetrafluoroethylene tape. Put the mixture into a dry box and set it at 105°C to heat and dissolve for about 2 hours. Weigh 5.88g TEOS and 0.894g APTES and put them into small test tubes. Add 115ml of deionized water and 50ml of ethanol into the three-neck flask, start stirring, add oleic acid and the mixture in the small test tube in turn with a dropper during stirring, and then stir vigorously for 5 minutes. After the stirring is completed, let stand for 2h. Subsequently, in an oil bath at 80 °C for 24 h. After the oil bath was completed, it was filtered with suction and washed twice with deionized water. Put the suction-filtered product together with the filter paper into a drying oven at 105°C for 5 to 6 hours. After drying, remove the filter paper, grind the sample to powder, and then use a muffle furnace to roast at 800 ° C for 2 hours, using a program to increase the temperature by 2...

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Abstract

The invention provides a method for preparing a nickel 14-based methane dry reforming catalyst. The obtained nickel-based methane dry reforming catalyst has a molecular sieve coating structure, the methane dry reforming catalyst is obtained by embedding nickel metal coated particles in a silicalite-2 molecular sieve structure, and the confinement effect of the cladding structure and the good hydrothermal stability of the silicalite-2 molecular sieve are used to prolong the service life of the catalyst. The catalyst obtained after high temperature reduction has strong interaction between the metal and a carrier, and the Ni particles have a small particle size and are highly dispersed in the molecular sieve. The catalyst still has a high activity at a high space velocity, can solve the carbon deposition and sintering problems in dry reforming of methane, and has a good stability.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation and environmental protection, and in particular relates to a preparation method of a nickel-based methane dry reforming catalyst. Background technique [0002] With the continuous development of industrialization, people are relying more and more on fossil fuels to meet their energy needs. However, the use of fossil fuels will produce a large amount of greenhouse gases, thereby causing serious environmental problems. Methane and carbon dioxide are the main components of greenhouse gases and have had a profound impact on climate change. According to statistics, in the 20th century, the global surface temperature rose by 0.8°C, and it is expected to rise further by 1.4-5.8°C in the 21st century. Although the concentration of methane in the atmosphere is lower than that of carbon dioxide, the greenhouse effect due to methane is more significant. There are two main sources of methane em...

Claims

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Application Information

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IPC IPC(8): B01J29/04C01B3/40
CPCC01B3/40B01J29/044C01B2203/0238B01J35/399B01J35/23Y02P20/52
Inventor 王胜平卢遥郭丹阮勇哲赵玉军马新宾
Owner TIANJIN UNIV
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