Preparation method and application for sodium aluminum hydride hydrogen storage material doped with titanate manganese

A technology of sodium aluminum hydride and hydrogen storage material, which is applied in chemical instruments and methods, manganese compounds, hydrogen and other directions, can solve the problems of simplicity of preparation process and the price of raw materials needs to be reduced, and achieves low price, fast hydrogen release speed, and high source of hydrogen. wide effect

Active Publication Date: 2018-08-24
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although the existing research and development work has achieved many results, the comprehensive hydrogen storage performance of sodium aluminum hydride still needs to be further improved, and the simplicity of the preparation process and the price of raw materials also need to be reduced.

Method used

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  • Preparation method and application for sodium aluminum hydride hydrogen storage material doped with titanate manganese
  • Preparation method and application for sodium aluminum hydride hydrogen storage material doped with titanate manganese
  • Preparation method and application for sodium aluminum hydride hydrogen storage material doped with titanate manganese

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Embodiment

[0022] Preparation of hydrogen storage material of sodium aluminum hydride doped with manganese titanate

[0023] Step 1) Preparation of manganese titanate. Weigh 5.75 g of manganese carbonate and 4.0 g of titanium dioxide, grind and mix manganese carbonate and titanium dioxide powder to obtain a mixture, and then place the mixture in a muffle furnace at a heating rate of 10 ℃ / min. Raise the room temperature to 900 ℃ for calcination and keep it for 6 hours to obtain manganese titanate;

[0024] Step 2) Under the protection of argon, weigh 0.4275 g sodium aluminum hydride and 0.0225 g manganese titanate into the ball mill tank, put 45 g steel balls, and seal, then put the ball mill tank into the ball mill and set the ball mill Rotation speed is 250r / min, ball milling time is 3 hours, ball milling is carried out, and then the ball milled product is taken out under argon conditions, and NaAlH is obtained 4 -5 wt%MnTiO 3 Hydrogen storage materials.

[0025] The manganese titanate in the...

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Abstract

The invention discloses a material for improving sodium aluminum hydride performance, and the sodium aluminum hydride and titanate manganese mechanical balls are grinded to prepare the material. The initial hydrogen desorption temperature is about 75 DEG C, the second-step hydrogen desorption temperature is about 160 DEG C, and the main hydrogen desorption process is completed at the temperature between 140 DEG C and 225 DEG C; when heated to 225 DEG C, the composite hydrogen storage material releases 5.1 wt%-5.4 wt% of hydrogen. The preparation method comprises the steps of 1) titanate manganese preparation; 2) preparation for sodium aluminum hydride hydrogen storage material doped with titanate manganese. The preparation method has the following advantages that 1, the doped sodium aluminum hydride has a lower hydrogen desorption temperature; 2, the hydrogen desorption quantity is large; 3, the speed of hydrogen desorption is quick; 4, the raw material cost is low, and the synthetic method and process are simple, safe and reliable. The sodium aluminum hydride hydrogen storage material doped with the titanate manganese has a certain application prospect in the hydrogen storage material field.

Description

Technical field [0001] The invention relates to the technical field of hydrogen storage materials for new energy materials, in particular to a preparation method and application of a sodium aluminum hydride hydrogen storage material doped with manganese titanate. Background technique [0002] Due to its high efficiency, cleanliness, and renewable characteristics, hydrogen energy has received extensive attention from researchers. The development and utilization of hydrogen energy involves four key technologies including the preparation, storage, transportation and application of hydrogen. Due to the problems of hydrogen being flammable, explosive, easy to diffuse, and low volume energy density under normal temperature and pressure, hydrogen storage technology has become a bottleneck for the practical and large-scale utilization of hydrogen energy. Therefore, the development of hydrogen storage technology with high energy density, high efficiency and high safety performance is a k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/00C01G45/00
CPCC01B3/0078C01G45/00C01P2002/72Y02E60/32
Inventor 徐芬杨侠孙立贤于芳张焕芝郭晓磊夏永鹏陈沛荣褚海亮邹勇进
Owner GUILIN UNIV OF ELECTRONIC TECH
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