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Cu catalyst for hydrogen production by methanol steam reforming and preparation method and application thereof

A steam reforming and catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., can solve the problem of unsatisfactory industrialization of stability and catalyst deactivation , grain growth and other issues, to achieve good catalytic activity, good activity and stability, and low cost

Pending Publication Date: 2021-07-23
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the catalyst with spinel structure shows good catalytic performance in methanol hydrogen production reaction, the stability has not yet met the needs of industrialization
Due to the low Taman temperature of copper, copper-based catalysts will gradually agglomerate during the reaction process, making the crystal grains grow gradually, eventually leading to the deactivation of the catalyst

Method used

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  • Cu catalyst for hydrogen production by methanol steam reforming and preparation method and application thereof
  • Cu catalyst for hydrogen production by methanol steam reforming and preparation method and application thereof
  • Cu catalyst for hydrogen production by methanol steam reforming and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Accurately weigh 5.95 grams of CuCl 2 2H 2 O, 51.10 g Al(NO 3 ) 3 9H 2 O and 1.25 g of 50% Mn(NO 3 ) 2 solution, add deionized water to make a 200ml mixed solution; accurately weigh 25.73 grams of Na 2 CO 3, adding deionized water to form a 200ml mixed solution. Through the injection pump, inject the two aqueous solutions obtained above into the reactor at a uniform speed, stir vigorously, age at a constant temperature of 70°C for 3 hours, then filter, dry the filter cake at 100°C, press into tablets, grind through a 40-mesh sieve, and sieve The powder is placed in a muffle furnace and fired at 850°C for 0h (that is, the muffle furnace starts from normal temperature, and the temperature is programmed to rise to 850°C at a rate of 3°C / min, and then the operation of maintaining a constant temperature (0h) is not performed, and the temperature is directly lowered to normal temperature. ). That is the catalyst, the mass fraction of each component is: CuO=27.94%, Al...

Embodiment 2

[0043] Accurately weigh 8.36 grams of Cu(NO 3 ) 2 ·3H 2 O, 24.21 g Al(NO 3 ) 3 9H 2 O, 2.48 grams of mass fraction are 50% Mn (NO 3 ) 2 solution and 0.48 g of Zr(NO 3 ) 4 5H2O, add 50% ethanol water solution to form a 200ml mixed solution, accurately weigh 6.63 grams of γ-Al 2 o 3 Put into the middle of the reactor; Accurately weigh 13.42 grams (NH 4 ) 2 CO 3 , adding a mass fraction of 50% aqueous ethanol to form a 200ml mixed solution. Pour the above-mentioned two solutions into the reactor at a constant speed through a sampling pump, stir vigorously, age at a constant temperature of 60°C for 6 hours, then filter, dry the filter cake at 120°C, press into tablets, grind through a 40-mesh sieve, and sieve The powder is placed in a muffle furnace and calcined at 900°C for 3 hours to obtain the catalyst. The mass fraction of each component is: CuO=27.52%, Al 2 o 3 = 69.73%, Mn oxide = 1.38%, ZrO 2 = 1.37%. The catalyst evaluation method is the same as in Example...

Embodiment 3

[0045] Accurately weigh 8.32 grams of Cu(NO 3 ) 2 ·3H 2 O, 48.42 grams of Al(NO 3 ) 3 9H 2 O and 3.08 g of 50% Mn(NO 3 ) 2 solution, add deionized water to make a 200ml mixed solution; accurately weigh 25.08 grams of Na 2 CO 3 , adding deionized water to form a 200ml mixed solution. Through the injection pump, inject the two aqueous solutions obtained above into the reactor at a uniform speed, stir vigorously, age at a constant temperature of 65°C for 3 hours, then filter, dry the filter cake at 120°C, press into tablets, grind through a 40-mesh sieve, and sieve The powder is placed in a muffle furnace and calcined at 800°C for 3 hours to obtain the catalyst. The mass fraction of each component is: CuO=27.54%, Al 2 o 3 = 65.83%, Mn oxide = 6.80%. The catalyst evaluation method is the same as in Example 1, and the reaction conditions and results are shown in Table 1.

[0046] The above-mentioned synthesized catalyst is compared with the Cu-Zn-Al catalyst used in ind...

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Abstract

The invention relates to a Cu catalyst for hydrogen production by methanol steam reforming and a preparation method and an application thereof, the catalyst comprises the following components in percentage by mass: 25-35% of CuO, 60-75% of Al2O3 and 0.1-15% of MOx, M is one or more of Co, Mn and Zr, and the catalyst has a face-centered cubic spinel structure and can be used for a reaction for a hydrogen production by methanol steam reforming. Compared with the prior art, the catalyst has the advantages of high catalytic performance, good stability and the like.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation. The catalyst is mainly composed of Cu and Al, and one or more of Co, Mn and Zr are added as auxiliary agents. Background technique [0002] Under the background of increasingly serious energy problems and environmental pollution problems in today's society, hydrogen, as a green and environmentally friendly new energy source, is considered to be one of the most promising energy sources to replace fossil fuels, and has been extensively studied in recent years. [0003] As a secondary energy source, hydrogen cannot be directly developed and utilized from the natural environment. Hydrogen production methods include electrolysis of water to produce hydrogen, fossil fuels to produce hydrogen, ammonia decomposition to produce hydrogen, and biomass to produce hydrogen. In recent years, methanol conversion to hydrogen has been widely used due to its advantages of low cost, convenient storage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889C01B3/32
CPCB01J23/002B01J23/8892C01B3/326B01J2523/00C01B2203/0233C01B2203/1223C01B2203/1076B01J2523/17B01J2523/31B01J2523/72B01J2523/48
Inventor 江志东吴浩飞马紫峰
Owner SHANGHAI JIAO TONG UNIV
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