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Hydrogen storage material hydrolysis and hydrogen releasing system taking monodispersed or supported phosphorus-containing metal compound as catalyst

A hydrogen storage material, monodisperse technology, applied in the field of hydrogen storage material water interpretation hydrogen system, can solve the problems that restrict the commercialization of catalysts, the instability of nanoparticles to oxygen, etc.

Active Publication Date: 2018-09-14
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above catalysts have achieved certain results in catalyzing the release of hydrogen from hydrogen storage materials, but most of the systems with high catalytic efficiency contain noble metals; few catalytic systems containing cheap metals have achieved high catalytic efficiency, and the nanoparticles of cheap metals are unstable to oxygen ; these deficiencies severely restrict the commercialization of these catalysts

Method used

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  • Hydrogen storage material hydrolysis and hydrogen releasing system taking monodispersed or supported phosphorus-containing metal compound as catalyst
  • Hydrogen storage material hydrolysis and hydrogen releasing system taking monodispersed or supported phosphorus-containing metal compound as catalyst
  • Hydrogen storage material hydrolysis and hydrogen releasing system taking monodispersed or supported phosphorus-containing metal compound as catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] A kind of cobalt nickel phosphide (Ni 0.7 co 1.3 P) the preparation method of catalyst, comprises the steps:

[0100] 1) Mix 250mg sodium citrate, 2.0g sodium hydroxide and 80mL distilled water evenly to obtain a mixed solution;

[0101] 2) Dissolve 350 mg of nickel nitrate hexahydrate and 650 mg of cobalt nitrate hexahydrate in 20 mL of distilled water to obtain a metal salt solution; slowly add the metal salt solution into the mixture, stir at room temperature for 1 h after the addition is complete, then centrifuge to collect the precipitate and use Washing with distilled water, and fully drying at 373K to remove water to obtain the precursor;

[0102] 3) 200 mg of the precursor and 1000 mg of phosphate were fully mixed and ground, and after grinding, the powder was placed in a tube furnace, and the tube furnace was heated from room temperature to 573K at a heating rate of 5K / min under an argon flow, and the Carry out calcination at this temperature for 2 hours, th...

Embodiment 2

[0105] A kind of cobalt nickel phosphide (Ni 0.7 co 1.3 P) the preparation method of catalyst, comprises the steps:

[0106] 1) Mix 350mg nickel nitrate hexahydrate, 650mg cobalt nitrate hexahydrate and 20mL distilled water evenly to obtain a mixed solution;

[0107] 2) Add 1g of red phosphorus to the mixed solution, then carry out hydrothermal reaction at 473K for 20h; cool to room temperature after the reaction, collect the precipitate by centrifugation and wash the precipitate with distilled water to obtain nickel cobalt phosphide (Ni 0.7 co 1.3 P).

Embodiment 3

[0109] A kind of cobalt nickel phosphide (Ni 0.7 co 1.3 P) the preparation method of catalyst, comprises the steps:

[0110] 1) Mix 350mg nickel nitrate hexahydrate, 650mg cobalt nitrate hexahydrate and 20mL distilled water evenly to obtain a mixed solution;

[0111] 2) Add 400mg of white phosphorus to the mixed solution, then carry out hydrothermal reaction at 423K for 5h; cool to room temperature after the reaction, collect the precipitate by centrifugation and wash the precipitate with distilled water to obtain nickel cobalt phosphide (Ni 0.7 co 1.3 P).

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Abstract

The invention discloses a hydrogen storage material hydrolysis and hydrogen releasing system taking a monodispersed or supported phosphorus-containing metal compound as a catalyst. The system comprises a hydrogen storage material and water, and further comprises a catalyst, wherein the catalyst is one or multiple of a monodispersed multi-metal phosphide, a supported multi-metal phosphide, a monodispersed single-metal and multi-non-metal phosphorus-containing compound, a supported single-metal and multi-non-metal phosphorus-containing compound, a monodispersed multi-metal multi-non-metal phosphorus-containing compound and a supported multi-metal multi-non-metal phosphorus-containing compound. Alkali is added into an aqueous solution of the monodispersed or supported phosphorus-containing metal to improve the catalytic rate of the catalyst and shorten the induction period. The catalysis efficiency of the supported catalyst is higher than that of the monodispersed catalyst. The system provides a batch of efficient novel catalysts for hydrolysis and hydrogen releasing of the hydrogen storage material, and provides a method for increasing the hydrolysis rate of the hydrogen storage material under the catalysis of the phosphorus-containing metal compound.

Description

technical field [0001] The invention relates to the field of hydrogen fuel cells; more specifically, it relates to a hydrogen storage material hydrolysis hydrogen decomposing system using a monodisperse or loaded phosphorus-containing metal compound as a catalyst. Background technique [0002] The cheap acquisition and storage of hydrogen is the bottleneck for the widespread application of hydrogen. So far, the cost of storing hydrogen is high and there are potential safety hazards. How to store hydrogen cheaply and safely and quickly release it is a major problem facing the application of hydrogen energy in portable power sources and vehicle-mounted fuel cells. Although methods related to hydrogen storage and hydrogen release of chemical hydrogen storage materials have been reported in recent years, it is still difficult to find high-quality hydrogen storage materials and what methods to use so that the chemical hydrogen storage materials can be released quickly and timely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185C01B3/06
CPCB01J27/1853C01B3/06Y02E60/36
Inventor 陈勇彭成云侯春朝
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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