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Catalyst for hydrogen production by methanol steam reforming and preparation method thereof

A technology of steam reforming and catalysts, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. It can solve the problems that the low-temperature catalytic performance of catalysts needs to be further improved. , to achieve the effect of promoting efficient oxidation-reduction process, improving hydrogen production efficiency, and easy ratio

Pending Publication Date: 2022-04-12
宁波中科科创新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present application provides a catalyst for hydrogen production by steam reforming of methanol and its preparation method to solve the problem that the low-temperature catalytic performance of existing catalysts needs to be further improved

Method used

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  • Catalyst for hydrogen production by methanol steam reforming and preparation method thereof
  • Catalyst for hydrogen production by methanol steam reforming and preparation method thereof
  • Catalyst for hydrogen production by methanol steam reforming and preparation method thereof

Examples

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preparation example Construction

[0037] In this embodiment, the preparation method of described catalyst comprises the steps:

[0038] Step S101: dissolving the lanthanide metal precursor in deionized water to obtain a precursor solution.

[0039] The lanthanide metal precursors include but are not limited to La(C 2 h 3 o 2 ) 3 1.5H 2 O, Ce(C 2 h 3 o 2 ) 3 ·xH 2 O, Er(C 2 h 3 o 2 ) 3 4H 2 O, Eu(C 2 h 3 o 2 ) 3 , CeCl 2 , ErCl 3 at least one of the Ultrasonic stirring can be used in the dissolution process to fully disperse the lanthanide metal precursor.

[0040] Step S102: Add alkali solution to the precursor solution, and react under specific conditions to form a mixed solution of alkaline precipitates of lanthanide metals.

[0041] Specifically, under the condition of heating in a water bath, lye is added to the precursor solution, so that a reaction occurs in the solution. Preferably, the temperature of the water bath is 60°C-95°C, more preferably, it can be 70°C-90°C, and the stirr...

Embodiment 1

[0072] The concrete steps of catalyst preparation are as follows:

[0073] 1) Take 0.53g La(C 2 h 3 o 2 ) 3 1.5H 2 O, 0.92g Ce(C 2 h 3 o 2 ) 3 ·H 2 O was dissolved in deionized water, and ultrasonically stirred to fully disperse it;

[0074] 2) Heating in a water bath at 90°C, adding 0.5M NH 4 HCO 3 solution, adjust the pH to be about 8 to form an alkaline precipitate mixture of lanthanide metals;

[0075] 3) suction-filtering the above-mentioned alkaline precipitate mixture of lanthanide metals, and drying at 70° C. for 10 hours to obtain alkaline precipitate powder of lanthanide metals;

[0076] 4) High temperature treatment at 300°C in an air atmosphere, and heat preservation for 4 hours to obtain a light yellow lanthanide metal oxide powder, which is La 2 CeO 5 composite oxides;

[0077] 5) the prepared La 2 CeO 5 Composite oxide and tetraamine platinum nitrate are thoroughly mixed to obtain a mixture, in which Pt accounts for La 2 CeO 5 10% of mass;

...

Embodiment 2

[0080] The concrete steps of catalyst preparation are as follows:

[0081] 1) Take 0.53g La(C 2 h 3 o 2 ) 3 1.5H 2 O, 0.92g Ce(C 2 h 3 o 2 ) 3 ·H 2 O was dissolved in deionized water, and ultrasonically stirred to fully disperse it;

[0082] 2) Heating in a water bath at 90°C, adding 0.5M NH 4 HCO 3 solution, adjust the pH to be about 8 to form an alkaline precipitate mixture of lanthanide metals;

[0083] 3) suction-filtering the above-mentioned alkaline precipitate mixture of lanthanide metals, and drying at 70° C. for 10 hours to obtain alkaline precipitate powder of lanthanide metals;

[0084] 4) High temperature treatment at 300°C in an air atmosphere, and heat preservation for 4 hours to obtain a light yellow lanthanide metal oxide powder, which is La 2 CeO 5 composite oxides;

[0085] 5) the prepared La 2 CeO 5 Composite oxide and tetraamine platinum nitrate are thoroughly mixed to obtain a mixture, in which Pt accounts for La 2 CeO 5 5% of mass;

[...

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Abstract

The invention discloses a catalyst for hydrogen production by methanol steam reforming and a preparation method thereof, and the preparation method comprises the following steps: step 1, dissolving a lanthanide series metal precursor in deionized water to obtain a precursor solution; step 2, adding alkali liquor into the precursor solution, and reacting under specific conditions to form alkali precipitate mixed liquor of lanthanide series metal; 3, carrying out suction filtration and drying treatment on the alkaline precipitate mixed solution of the lanthanide series metal to obtain an alkaline precipitate of the lanthanide series metal; 4, the alkaline precipitate is subjected to high-temperature treatment in the oxygen-containing atmosphere, perovskite AxByO3 + beta composite oxides are obtained, and A and B are both lanthanide series metal elements; 5, the AxByO3 + beta composite oxide and the Pt-containing precursor are mixed, the Pt-AxByO3 + beta catalyst is obtained, and x, y and beta are all positive numbers. The catalyst is high in catalytic efficiency and low in cost.

Description

technical field [0001] The present application relates to the technical field of catalyst preparation, in particular to a catalyst for hydrogen production by steam reforming of methanol and a preparation method thereof. Background technique [0002] As the problems of resources, environment and energy on the earth become more and more prominent, the development of renewable and environment-friendly energy is becoming the focus and focus of international research and development. Therefore, the development of new energy technologies with environmental protection and renewable characteristics has attracted widespread attention. Among them, the proton exchange membrane fuel cell (PFMFC) is about to enter the commercialization stage, and its ideal fuel is hydrogen, but the supply of hydrogen is still one of the important factors restricting its commercialization. [0003] As a liquid fuel, methanol has become an ideal fuel for hydrogen production because of its high energy dens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/63C01B3/32
Inventor 邹亮亮刘培刘得友李威
Owner 宁波中科科创新能源科技有限公司
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