High-efficiency catalyst for hydrogen production by ethanol steam reforming and preparation method thereof

A steam reforming and catalyst technology, which is applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of inability to obtain an array structure, prolonged electrolysis time, etc. Achieve the effect of high solubility, reduced usage and low price

Pending Publication Date: 2020-05-22
王永芝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] (d) Thorough oxidation method: The excessive oxidation method refers to prolonging the electrolysis time, so that the aluminum sheet is fully anodized from one side to penetrate to the underlying metal, and directly obtain a self-supporting through-hole film. The obvious disadvantage of the method is that it must be single Side oxidation, otherwise the array structure cannot be obtained

Method used

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  • High-efficiency catalyst for hydrogen production by ethanol steam reforming and preparation method thereof
  • High-efficiency catalyst for hydrogen production by ethanol steam reforming and preparation method thereof

Examples

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Effect test

Embodiment 1

[0070] A method for preparing a high-efficiency ethanol steam reforming hydrogen production catalyst, comprising the following processing steps:

[0071] (1) Select 5 series aluminum alloy less than 0.5cm as the base material;

[0072] (2) Pretreating the aluminum substrate, the pretreatment process is alkaline-hot water washing-alkali washing-hot water washing-cold water washing-acid washing-water washing steps.

[0073] (3) Anodize the treated aluminum substrate to form an oxide film on the surface. The solution used for anodizing is a mixture of oxalic acid, phosphoric acid and sulfosalicylic acid. The concentration of oxalic acid is 0.25M, and the concentration of phosphoric acid is is 0.2M, the concentration of sulfosalicylic acid is 0.05M, the voltage of the anodic oxidation process is 20V, and the temperature is 30 o C, current density 2A / dm 2 , time 20min.

[0074] (4) The protective film is adsorbed on the surface of the porous layer of the anodized film, and the p...

Embodiment 2

[0081] A method for preparing a high-efficiency ethanol steam reforming hydrogen production catalyst, comprising the following processing steps:

[0082] (1) Select 5 series aluminum alloy less than 0.5cm as the base material;

[0083] (2) Pretreating the aluminum substrate, the pretreatment process is alkaline-hot water washing-alkali washing-hot water washing-cold water washing-acid washing-water washing steps.

[0084] (3) Anodize the treated aluminum substrate to form an oxide film on the surface. The solution used for anodizing is a mixture of oxalic acid, phosphoric acid and sulfosalicylic acid. The concentration of oxalic acid is 0.275M, and the concentration of phosphoric acid is is 0.3M, the concentration of sulfosalicylic acid is 0.1M, the voltage of the anodic oxidation process is 25V, and the temperature is 30 o C, current density 2.5A / dm 2 , time 25min.

[0085] (4) The protective film is adsorbed on the surface of the porous layer of the anodized film, and the...

Embodiment 3

[0092] A method for preparing a high-efficiency ethanol steam reforming hydrogen production catalyst, comprising the following processing steps:

[0093] (1) Select 5 series aluminum alloy less than 0.5cm as the base material;

[0094] (2) Pretreating the aluminum substrate, the pretreatment process is alkaline-hot water washing-alkali washing-hot water washing-cold water washing-acid washing-water washing steps.

[0095] (3) Anodize the treated aluminum substrate to form an oxide film on the surface. The solution used for anodizing is a mixture of oxalic acid, phosphoric acid and sulfosalicylic acid. The concentration of oxalic acid is 0.3M, and the concentration of phosphoric acid is is 0.4M, the concentration of sulfosalicylic acid is 0.15M, the voltage of the anodic oxidation process is 30V, and the temperature is 30 o C, current density 3A / dm 2 , time 30min.

[0096] (4) The protective film is adsorbed on the surface of the porous layer of the anodized film, and the pr...

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Abstract

The invention provides a high-efficiency catalyst for hydrogen production by ethanol steam reforming and a preparation method thereof. A catalyst carrier is a through-hole type aluminum oxide pore channel array obtained by calibrated corrosion anode oxide film and performing a replacement reaction, no shielding layer exists in the aluminum oxide pore channel array, the pore channel structure of the array is complete and uniform, and the surface of the aluminum oxide pore channel array is impregnated with a Co active component to obtain the Co / Al2O3 catalyst.

Description

technical field [0001] The invention relates to a through-hole alumina catalyst carrier and a preparation method thereof, which belongs to the fields of electrochemistry and catalysts, and is especially suitable for the field of supported catalysts and preparation methods thereof. The catalysis relates in particular to the hydrogen production reaction by steam reforming of ethanol. [0002] technical background [0003] Aluminum or aluminum alloy anodizing refers to the process of immersing aluminum or aluminum alloy in a suitable electrolyte as an anode for electrification, and forming an oxide film (Al2O layer) on the surface of aluminum or aluminum alloy. The existence of this layer of oxide film can improve the corrosion resistance of aluminum alloy. At the same time, with the help of the special structure of the oxide film and the later treatment process, for example, the anodic oxide film can also be combined with surface painting and other further treatments to make ...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25D11/08C25D11/10C25D11/24C25D11/16C23G1/22C23G1/12B01J23/75B01J37/02
CPCC25B1/04C25D11/08C25D11/10C25D11/24C25D11/16C23G1/22C23G1/125B01J23/75B01J37/0207Y02E60/36
Inventor 王永芝
Owner 王永芝
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