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Palladium-copper-rare earth-aluminum oxide catalytic separation composite membrane and preparation method and application thereof

A technology of aluminum oxide and composite membrane, applied in chemical instruments and methods, hydrogen separation, semi-permeable membrane separation, etc., can solve the problems of time-consuming and complicated process operation, save time in the preparation process, and improve catalysis performance, and the effect of improving the catalytic conversion rate of methane

Inactive Publication Date: 2015-06-10
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Two of purpose of the present invention in order to solve above-mentioned adopting electroless plating to form palladium alloy film on non-metallic surface, because the process operation of electroless plating method is complicated, and more activation steps, sensitization steps are arranged, must carry out at last Before electroless plating, there will be a large number of pretreatment processes, which will inevitably take more time and other technical problems to provide a kind of palladium-copper-rare earth-aluminum oxide catalytic separation composite membrane prepared by electroplating preparation method

Method used

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  • Palladium-copper-rare earth-aluminum oxide catalytic separation composite membrane and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0045] A method for preparing a palladium-copper-rare earth-aluminum oxide catalytic separation composite membrane, specifically comprising the following steps:

[0046] (1) Put the 90mm×60mm×250μm porous through-hole anodized aluminum oxide film into a 500mL beaker, add 420mL of pure water, clean it with ultrasonic waves for 30min, take out the porous through-hole anodized aluminum oxide film, and dry it in an oven at 100°C 0.5h, burn in a high-temperature furnace at 800°C for 5h, take out the porous through-hole anodic aluminum oxide film and cool to room temperature;

[0047] (2) Use transparent tape to paste the above-mentioned porous through-hole anodized aluminum film to be plated on the electrolytic nickel plate of 150mm×60mm×2mm, and paste the transparent tape on the reverse side of the electrolytic nickel plate, such as figure 1 As shown, that is, firstly, the above-mentioned porous through-hole anodized aluminum film to be plated is placed on one end of a 150mm×60mm×...

Embodiment 2

[0059] A method for preparing a palladium-copper-rare earth-aluminum oxide catalytic separation composite membrane, specifically comprising the following steps:

[0060] (1) Put a 90mm×60mm×250μm porous through-hole anodized aluminum oxide film into a 500mL beaker, add 420mL of pure water, clean it with ultrasonic waves for 5min, take out the porous through-hole anodized aluminum oxide film, and dry it in an oven at 50°C 5h, burn in a high-temperature furnace at 1100°C for 0.5h, take out the porous through-hole anodized aluminum film and cool it to room temperature;

[0061] (2), the above-mentioned processed porous through-hole anodic aluminum oxide film to be plated is pasted on a steel plate of 150 mm * 60 mm * 2 mm with double-sided adhesive tape, and a scotch tape is pasted on the reverse side of the steel plate, specifically the same as in Example 1;

[0062] (3) Weigh 5.8640g of lanthanum oxide in a 100mL small beaker, add 30mL of concentrated nitric acid under stirring...

Embodiment 3

[0074] A method for preparing a palladium-copper-rare earth-aluminum oxide catalytic separation composite membrane, specifically comprising the following steps:

[0075] (1) Put a 90mm×60mm×250μm porous through-hole anodized aluminum oxide film into a 500mL beaker, add 420mL of pure water, clean it with ultrasonic waves for 17min, take out the porous through-hole anodized aluminum oxide film, and dry it in an oven at 85°C 2h, burn in a high-temperature furnace at 900°C for 3h, take out the porous through-hole anodized aluminum film and cool it to room temperature;

[0076] (2), the above-mentioned treated porous through-hole anodic aluminum oxide film to be plated is pasted on a steel plate of 150mm * 60mm * 2mm with scotch tape, and the scotch tape is pasted on the back of the steel plate, specifically the same as in Example 1;

[0077] (3) Weigh 0.5832g of neodymium oxide in a 50mL small beaker, add 3mL of concentrated nitric acid under stirring, heat to dissolve it, and after...

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Abstract

The invention discloses a palladium-copper-rare earth-aluminum oxide catalytic separation composite membrane and a preparation method and an application thereof. A layer of palladium-copper-rare earth membrane is plated on the surface of a porous through hole anodised aluminum membrane by an electrochemical plating method, during preparing, a palladium-copper-rare earth membrane which is plated on the surface attached to a cathode is compact in structure and has thickness of 0.1-0.5micrometer, finally one surface is provided with multiple nano holes, and the other surface is provided with a compact palladium-copper-rare earth-aluminum oxide membrane. The palladium-copper-rare earth-aluminum oxide catalytic separation composite membrane is applied to catalyzing methane water vapor to produce hydrogen by reforming and applied to separation of hydrogen in a gas mixture, finally the methane catalytic conversion rate is 100%, the hydrogen penetration rate is (8.62-8.79)*10-(6mol*m)-(2*s)-1Pa-1, after the catalysis of methane water vapor is preformed to produce hydrogen by reforming, the separation coefficient of the generated hydrogen is 1065-1072, and the separation coefficient of the hydrogen in the gas mixture is 1072-1081.

Description

technical field [0001] The invention relates to a palladium alloy film formed on a non-metal surface, in particular to a palladium-copper-rare earth alloy film formed on the surface of a porous through-hole anodized aluminum film, that is, a palladium-copper-rare earth-dioxide Aluminum catalytic separation composite membrane, its preparation method and its application in hydrogen production by catalytic methane steam reforming and separation of hydrogen in mixed gas. Background technique [0002] The anodic aluminum oxide membrane has the characteristics of highly ordered pores and large specific surface area, and has broad application prospects in the fields of catalytic materials and separation. Catalytic membranes can be prepared on anodized aluminum membranes by dipping and sol-gel methods. [0003] For example: Ganley JC et al impregnated the porous anodized aluminum membrane in RuCl 3 and Ni(NO 3 ) 2 In the mixed solution, Ru-Ni-Al was prepared 2 o 3 The membrane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02B01D69/12B01D67/00C01B3/50C01B3/40B01J23/89C25D3/56C25D7/00C25D5/02
CPCY02P20/52
Inventor 刘小珍陈捷
Owner SHANGHAI INST OF TECH
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