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Hydrolysis hydrogen production agent

A technology for hydrogen production and water absorbing agent by hydrolysis, applied in the production of hydrogen and other directions, can solve the problems of slow reaction rate and low hydrogen production, and achieve the effects of reducing cost, improving volumetric energy density, and reducing the weight of hydrogen production formula

Inactive Publication Date: 2015-07-22
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a high hydrogen production rate, stable performance and rapid hydrogen production borohydride hydrolysis hydrogen production formula, to overcome the existing defects of low hydrogen production and slow reaction rate of borohydride hydrolysis hydrogen production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0028] Mix 0.25g of sodium borohydride powder, 0.05g of cobalt chloride, and citric acid of different qualities in a 50mL round-bottomed flask, and add 0.25mL, 0.5mL, and 0.75mL of distilled water into the flask with a 1mL injection needle. The reaction was carried out in a round-bottom flask, and the generated hydrogen gas was led out through a rubber tube to a 1L measuring cylinder filled with water and turned upside down into a large beaker, so as to record the amount of hydrogen gas generated collected at a certain time interval. The reaction is at room temperature 18 °C, NaBH 4 The dosage is 0.25g, and the water inlet method is selected under the condition of one-time injection. Hydrogen production per unit mass Vm (mL / g) and time t (min) are as attached Figure 1~Figure 3 Shown (in the legend, W represents the amount of water added, N represents citric acid, and C represents cobalt chloride).

experiment example 2

[0030] Mix 0.25g of sodium borohydride powder, 0.03g of cobalt chloride, and citric acid of different qualities in a 50mL round-bottomed flask, and then add 0.5mL of distilled water into the round-bottomed flask with a 1mL injection needle for reaction. The generated hydrogen gas is led out through a rubber tube into a 1L measuring cylinder filled with water and turned upside down into a large beaker, so as to record the amount of generated hydrogen gas collected at a certain time interval. The reaction is at room temperature 18 °C, NaBH 4 The dosage is 0.25g, and the water inlet method is selected under the condition of one-time injection. Hydrogen production per unit mass Vm (mL / g) and time t (min) are as attached Figure 4 Shown (in the legend, W represents the amount of water added, N represents citric acid, and C represents cobalt chloride).

[0031] From the above two experimental examples, the optimal ratio obtained is sodium borohydride:cobalt chloride:citric acid=0....

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Abstract

The invention discloses a hydrolysis hydrogen production agent which at least comprises borohydride, metal catalysts and acid catalysts, wherein the metal catalysts comprise one or more of CoCl2, Co-B, FeCl2, NiC12 and CuCl2; the acid catalysts comprise one or more of citric acid, oxalic acid and phosphoric acid. The metal catalysts and the acid catalysts, namely two different types of catalysts, are mixed, a reaction between the catalyst mixture and borohydride is performed according to a certain formula, and water absorbents and a leavening agent are added into the formula, so that the catalyst mixture has the characteristics of being porous in appearance, large in specific surface area, high in catalytic activity and the like, the service life of the catalyst mixture is greatly prolonged, and the hydrogen yield and the hydrogen production rate are comprehensively improved; the defects in the borohydride-based hydrolysis hydrogen production rate and yield are overcome; besides, according to the formula for hydrogen production, the energy density of a portable hydrogen fuel battery can be enhanced, and the application prospect in the portable hydrogen production field is very wide.

Description

technical field [0001] The invention belongs to the field of hydrogen energy and fuel cells, and in particular relates to a hydrolysis hydrogen production agent. Background technique [0002] UAVs can perform tasks in boring, dirty and dangerous environments. In addition to being widely valued in the military field, they have extremely wide uses in civilian fields such as disaster defense monitoring, power communication system maintenance, and marine surveys. Larger drones use combustion engines and are driven by traditional fuel; small drones mostly use electric engines, generally driven by lithium-ion batteries. Based on different material systems, the current lithium-ion battery technology has limited specific energy, ranging from 150 Wh / kg to 250 Wh / kg, which cannot meet the development trend requirements of modern drones for miniaturization and long range. Therefore, the research has high The power source of specific energy is of great significance. [0003] As a powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/06
CPCY02E60/36
Inventor 刘志祥陈维荣李奇张雪霞戴朝华王勇
Owner SOUTHWEST JIAOTONG UNIV
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