A monodisperse or supported phosphorus-containing metal compound as a catalyst for hydrogen storage material hydrolysis hydrogen system

A hydrogen storage material and phosphide technology, applied in the field of hydrogen storage material hydrolysis hydrogen system, can solve the problems of restricting the commercialization of catalysts and the instability of nanoparticles to oxygen.

Active Publication Date: 2021-05-14
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A monodisperse or supported phosphorus-containing metal compound as a catalyst for hydrogen storage material hydrolysis hydrogen system
  • A monodisperse or supported phosphorus-containing metal compound as a catalyst for hydrogen storage material hydrolysis hydrogen system
  • A monodisperse or supported phosphorus-containing metal compound as a catalyst for hydrogen storage material hydrolysis hydrogen system

Examples

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Effect test

Embodiment 1

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

[0100] 1) Mix 250 mg of sodium citrate, 2.0 g of sodium hydroxide and 80 mL of distilled water 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 mixed solution, stir at room temperature for 1 h after the dropwise addition, and then collect the precipitate by centrifugation and use Washed with distilled water, and fully dried to remove water at 373K to obtain a precursor;

[0102] 3) 200 mg of the precursor and 1000 mg of phosphate are thoroughly mixed and ground, the powder is placed in a tube furnace after grinding, and the tube furnace is heated from room temperature to 573K at a heating rate of 5K / min under an argon flow, and at Calcined at this temperature for 2h, then cooled to room...

Embodiment 2

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

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

[0107] 2) 1g of red phosphorus was added to the mixed solution, and then hydrothermally reacted at 473K for 20h; after the reaction was completed, it was cooled to room temperature, and the precipitate was collected by centrifugation and washed with distilled water to obtain cobalt nickel phosphide (Ni 0.7 Co 1.3 P).

Embodiment 3

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

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

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

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Abstract

The invention discloses a monodisperse or supported phosphorus-containing metal compound as a catalyst for hydrogen storage material hydrolysis and dehydrogenation system, including hydrogen storage material and water, and also includes a catalyst; the catalyst is a monodisperse multi-metal phosphide, supported Type polymetallic phosphides, monodisperse monometallic polynonmetallic phosphorus compounds, supported monometallic polynonmetallic phosphorus compounds, monodisperse polymetallic polynonmetallic phosphorus compounds and supported polymetallic polynonmetallic compounds One or more of metal phosphorus-containing compounds. Adding alkali to the aqueous solution of monodisperse or supported phosphorus-containing metal compounds can increase the catalytic rate of the catalyst and shorten the induction period. The catalytic efficiency of supported catalysts is higher than that of monodispersed catalysts. The invention provides a group of high-efficiency new catalysts for hydrolysis of hydrogen storage materials, and provides a method for accelerating the hydrolysis rate of hydrogen storage materials catalyzed by phosphorus-containing metal compounds.

Description

technical field [0001] The present invention relates to the field of hydrogen fuel cells; more particularly, to a hydrogen storage material hydrolysis hydrogen system using monodisperse or supported phosphorus-containing metal compounds as catalysts. 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 release it quickly is a major problem facing the application of hydrogen energy to portable power sources and vehicle fuel cells. Although methods related to the hydrogen storage and hydrogen release of chemical hydrogen storage materials have been reported in an endless stream in recent years, it is difficult to find high-quality hydrogen storage materials and use what methods to enable the chemical hydrogen storage materials to be released quickly and timely at no...

Claims

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Application Information

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Patent Type & Authority Patents(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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