Method for preparing nickel-loaded halloysite-based methane dry reforming catalyst

A methane dry reforming and catalyst technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effect of low preparation cost and solve serious problems of sintering and carbon deposition

Active Publication Date: 2018-08-03
SHANGHAI UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The present invention aims at the shortcomings of the preparation of existing methane dry reforming catalysts, and proposes a preparation method of nickel-loaded halloysite-based methane dry reforming catalysts. The method has the advantages of uniform dispersion of active components, good thermal stability, and preparation The process is simple, which can effectively solve the sintering and agglomeration of active components in high temperature reactions and inhibit the formation of carbon deposits in reforming reactions

Method used

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  • Method for preparing nickel-loaded halloysite-based methane dry reforming catalyst

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Embodiment 1

[0027] Weigh 4.000g of natural halloysite, 1.200g of sodium carbonate and 20g of sodium nitrate into a nylon ball mill jar, and mill for 60 minutes. Ball-milled halloysite powder is placed in a muffle furnace, with 10 o C / min rate of heating up to 350 o C, calcined for 2 hours, cooled with the furnace, washed with deionized water until the pH value reached 7, and then dried in an oven at 60°C for 12 hours. Get 2g of the above-mentioned pretreated halloysite and add it into a 50ml flask containing a certain amount of deionized water, and stir at room temperature for 30min. Add 0.5613g of nickel nitrate precursor salt into a flask containing 20ml of deionized water to prepare a precursor salt solution, and the loading amount of nickel is 5.5wt%. Then, the prepared precursor salt solution was added into the flask containing halloysite, evaporated with a rotary evaporator for 2 hours, and then dried in an oven at 60° C. for 12 hours to fully dry the catalyst precursor. The prod...

Embodiment 2

[0030] Weigh 4.000g of natural halloysite, 0.800g of sodium carbonate and 20g of sodium nitrate into a nylon ball mill jar, and mill for 60 minutes. Ball-milled halloysite powder is placed in a muffle furnace, with 10 o C / min rate of heating up to 350 o C, calcined for 2 hours, cooled with the furnace, washed with deionized water until the pH value reached 7, and then dried in an oven at 60°C for 12 hours. Get 2g of the above-mentioned pretreated halloysite and add it into a 50ml flask containing a certain amount of deionized water, and stir at room temperature for 30min. 0.5613g of nickel acetate precursor salt was added into a flask containing 20ml of deionized water to prepare a precursor salt solution, and the loading amount of nickel was 5.5wt%. Then, the prepared precursor salt solution was added into the flask containing halloysite, evaporated with a rotary evaporator for 2 hours, and then dried in an oven at 60° C. for 12 hours to fully dry the catalyst precursor. T...

Embodiment 3

[0033] Weigh 4.000g of natural halloysite, 1.200g of sodium carbonate and 20g of sodium nitrate into a nylon ball mill jar, and mill for 60 minutes. Ball-milled halloysite powder is placed in a muffle furnace, with 10 o C / min rate of heating up to 350 o C, calcined for 2 hours, cooled with the furnace, washed with deionized water until the pH value reached 7, and then dried in an oven at 60°C for 12 hours. Get 2g of the above-mentioned pretreated halloysite and add it into a 50ml flask containing a certain amount of deionized water, and stir at room temperature for 30min. Add 0.5613 g of nickel acetylacetonate precursor salt into a flask containing 20 ml of deionized water to prepare a precursor salt solution with a nickel loading of 5.5 wt%. Then, the prepared precursor salt solution was added into the flask containing halloysite, evaporated using a rotary evaporator for 2 hours, and then dried in an oven at 60° C. for 12 hours to fully dry the catalyst precursor. The prod...

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Abstract

The invention relates to a method for preparing a nickel-loaded halloysite-based methane dry reforming catalyst. The preparation method comprises the following steps: performing in situ modification on the surface of halloysite used as a carrier by a molten salt ball-milling technology to disperse and anchor an active nickel species, loading a nickel precursor on the modified surface of halloysiteby a rotary evaporative impregnation technology in order to realize uniform dispersion and strong interaction of all metals, and performing drying, high-temperature calcination and temperature programming reduction to finally obtain the catalyst with high resistance to sintering and carbon deposition. The catalyst has the advantages of simple preparation process, low cost, no pollution to the environment, high catalytic efficiency and the like.

Description

technical field [0001] The invention relates to a preparation method of a nickel-loaded halloysite-based methane dry reforming catalyst, belonging to the technical fields of nano-catalyst preparation technology and environmental protection. Background technique [0002] With the consumption of coal and petroleum fuels, fossil energy is increasingly scarce, and the problem of environmental pollution caused by its combustion continues to aggravate. With the rapid development of society, the world's energy structure is constantly changing, and natural gas as a clean energy has received extensive attention. The main component of natural gas is methane. According to scientific research, China's demand for natural gas will increase in the next few years, and natural gas will play an important role in the energy structure. The effective use of natural gas can not only reduce carbon dioxide emissions, but also It is beneficial to alleviate the impact of the greenhouse effect on hum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J37/02B01J37/08B01J37/18C01B3/40
CPCB01J23/755B01J37/0207B01J37/082B01J37/18C01B3/40Y02P20/52
Inventor 张登松方建慧施利毅陆美荣李红蕊
Owner SHANGHAI UNIV
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