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High-capacity hydrogen storage material Zn(BH4)2.2NH3 and preparation method thereof

A 2.2NH3, hydrogen storage material technology, applied in the production of hydrogen, borane/diborane hydride, etc., can solve the problems of catalyst poisoning and high temperature, and achieve the effect of moderate cost

Inactive Publication Date: 2012-02-08
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also difficult problems in the catalytic decomposition of ammonia, such as high temperature and catalyst poisoning, which limit its large-scale application in vehicles. [11]

Method used

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  • High-capacity hydrogen storage material Zn(BH4)2.2NH3 and preparation method thereof
  • High-capacity hydrogen storage material Zn(BH4)2.2NH3 and preparation method thereof
  • High-capacity hydrogen storage material Zn(BH4)2.2NH3 and preparation method thereof

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Embodiment Construction

[0031] The present invention is further illustrated below by way of examples.

[0032] 1.36g anhydrous ZnCl 2 Put it into a reactor with a cock in an argon glove box, take out the closed reactor, and fill it with dry ammonia after vacuuming. During the static period, repeatedly tap the reactor to accelerate the ammonia complexation reaction. After 12 hours, the product will be at about 1 bar. Heating to about 180°C under an argon atmosphere, and standing still until the product quality is between 1.690 and 1.710, that is, ZnCl is prepared 2 2NH 3 . Take 0.85g in the glove box, ZnCl 2 2NH 3 with 0.22g LiBH 4 Mix, put into a ball mill jar, seal and take out the ball mill. The ball milling conditions are: the number of revolutions is 400-450 rpm, with stainless steel ball milling balls, the diameter is 0.5-2cm, the ball milling time is 1 hour, the operation mode is alternate restart, and the alternate time is 6 minutes. Zn(BH 4 ) 2 2NH 3 . The sample after ball milling ...

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Abstract

The invention belongs to the technical field of hydrogen storage, in particular to a high-capacity hydrogen storage material and a preparation method thereof. The hydrogen storage material is Zn(BH4)2.2NH3 or a composite material taking the Zn(BH4)2.2NH3 as the main component, and has good hydrogen exhaust performance, and high-purity hydrogen can be obtained when the material is heated to the temperature of 90-300 DEG C. The hydrogen storage material can be prepared by grinding or ball-milling the mixture of zinc salt diamine complex and hydroboron with the molar ratio of Zn2 plus to BH4 minus of 1:2 in inert gas.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage, and in particular relates to a high-capacity hydrogen storage material and a preparation method thereof. Background technique [0002] The Industrial Revolution started the process of human beings moving towards modernization. For more than a century, human society has developed rapidly, and energy has always been a powerful driving force. The main energy sources people rely on today are fossil fuels: coal, oil and natural gas. The formation of these fuels began millions of years ago in limited quantities and has been gradually depleted after long-term mining. Hydrogen is a non-polluting (combustion product is water) high combustion value (1.4×10 8 J / Kg) of renewable energy materials, is expected to replace existing energy to build a hydrogen energy system. However, due to the low density and condensation temperature (-252°C 1 bar) of hydrogen, it is difficult to use traditional stor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B6/23C01B3/06
CPCY02E60/36
Inventor 余学斌郭艳辉高粱
Owner FUDAN UNIV