Catalyst for generating hydrogen by hydroboron hydrolysis and preparation method of catalyst

A technology of borohydride and catalyst, which is applied in the field of borohydride hydrolysis hydrogen production catalyst and its preparation, can solve the problems of high catalytic activity and low price, and achieve the effect of simple preparation process, low cost and wide application prospect

Inactive Publication Date: 2013-05-01
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the catalysts suitable for borohydrides that have been reported so far, very few have both high catalytic activity and low price.

Method used

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  • Catalyst for generating hydrogen by hydroboron hydrolysis and preparation method of catalyst
  • Catalyst for generating hydrogen by hydroboron hydrolysis and preparation method of catalyst
  • Catalyst for generating hydrogen by hydroboron hydrolysis and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 0.5mmol cobalt acetate tetrahydrate and 10ml oleylamine into a four-necked flask, stir and mix under the protection of argon, then raise the temperature to 120°C, keep it warm for 30min to mix thoroughly, then inject 1.5mmol trioctylphosphine, and raise the temperature to After heat preservation at 240°C for 40 minutes, cool to room temperature, add ethanol to precipitate the product, take out the reaction mother liquor by centrifugation, then use acetone and n-hexane mixed solution to repeatedly wash three times, and finally vacuum dry to obtain a powder product. figure 1 It is a transmission electron microscope photograph of the product, and the size of the prepared nanocrystal is about 40nm, and has an octahedral shape. figure 2 It is the electron diffraction spectrogram of the product, confirming that the product is cobaltous oxide with a face-centered cubic structure.

[0042] Using 10mg of the prepared cobaltous oxide nanocrystalline catalyst (the content of ...

Embodiment 2

[0044] Add 0.5mmol cobalt acetate tetrahydrate and 10ml bibenzyl ether into a four-necked bottle, stir and mix under the protection of argon, then raise the temperature to 130°C, keep it warm for 20min, remove excess water vapor, raise the temperature to 240°C, and keep it warm for 20min Cool to room temperature, add ethanol to precipitate the product, take out the reaction mother liquor by centrifugation, then use the mixed solution of acetone and n-hexane to wash repeatedly three times, and finally vacuum-dry to obtain the powder product. Figure 4 The transmission electron micrograph of the product shows that the prepared nanocrystals are in irregular shape. Figure 5 It is the electron diffraction spectrogram of the product, confirming that the product is cobaltous oxide with a face-centered cubic structure.

[0045] Using 10mg of the prepared cobaltous oxide nanocrystalline catalyst (the content of the active component cobaltous oxide is 100%), catalyze 5ml of alkaline so...

Embodiment 3

[0047] Add 0.5mmol cobalt acetate tetrahydrate and 10ml bibian ether into a four-necked bottle, stir and mix under the protection of argon, then raise the temperature to 130°C, keep it warm for 20min, remove excess water vapor, then add 2ml oleylamine, and mix well Then raise the temperature to 220°C, keep it warm for 60 minutes, and form a yellow-brown transparent complex, then raise the temperature to 240°C, keep it warm for 20 minutes, then cool to room temperature, add ethanol to precipitate the product, take out the reaction mother liquor by centrifugation, and then use acetone and n-hexane The mixed solution was repeatedly washed three times, and finally vacuum-dried to obtain a powder product. Figure 7 The transmission electron micrograph of the product shows that the size of the prepared nanocrystal is about 10nm, and the shape is approximately spherical. Figure 8 It is the electron diffraction spectrogram of the product, confirming that the product is cobaltous oxid...

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Abstract

The invention discloses a catalyst for generating hydrogen by hydroboron hydrolysis and a preparation method of the catalyst, and relates to a catalyst. The catalyst comprises an active component and a carrier, wherein the active component is cobalt monoxide nanocrystal; the carrier is metal oxide powder and carbon material powder; and the mass percent of the active component in the catalyst is 10%-100%. The preparation method comprises the steps of decomposing a metal precursor of cobalt in alkylamine containing trioctylphosphine phosphorous and ether taking alkylamine as a surfactant, conducting a reaction at 210-260 DEG C, cooling, separating, obtaining the active component with a particular pattern, mixing the active component with the carrier, and obtaining the catalyst. The catalyst can act as a substitute of the currently used noble metal catalyst, and has wide application prospects in the fields of fuel cells and the like. As the cobalt monoxide nanocrystal is taken as the active component, the catalyst has high activity for a hydrogen generation reaction by the hydroboron hydrolysis, is high in hydrogen generation speed, simple in preparation process, and low in cost.

Description

technical field [0001] The invention relates to a catalyst, in particular to a catalyst for hydrolyzing borohydride to produce hydrogen and a preparation method thereof. Background technique [0002] In recent years, with the intensification of environmental pollution, the society's demand for clean energy has become very urgent. Hydrogen energy, as a new type of clean energy that can replace traditional fossil fuels, has attracted great attention and has broad application prospects. The application of hydrogen energy in the field of fuel cells has the characteristics of low operating temperature, fast start-up, and high energy conversion efficiency. To realize the large-scale commercial application of fuel cells, how to store and release hydrogen safely and efficiently is one of the urgent problems to be solved. Judging from the existing hydrogen storage methods, although high-pressure hydrogen storage is convenient to use, it is bulky and poor in safety. Liquid hydrogen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75C01B3/06
CPCY02E60/36
Inventor 陈远志卢奡麟彭栋梁岳光辉王来森
Owner XIAMEN UNIV
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