Application of nano magnesium-based hydrogen storage alloy powder
A hydrogen storage alloy and nano-magnesium technology, which is applied in the fields of hydrogen, non-metallic elements, and inorganic chemistry, can solve the problems of low permeation flux, low hydrogen purity, and complicated process, and achieve high separation efficiency, high purity, and simple process Effect
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Embodiment 1
[0027] 1. The hydride reaction bed is filled with magnesium-based hydrogen storage alloy powder (grain size is 10-100nm); after laying, its packing density is 0.1-0.3g / cm 3 , The mixed gas containing hydrogen is composed of 50% hydrogen and 50% argon gas.
[0028] 2. A continuous temperature cycle of 150°C-350°C is applied to the hydride reaction bed, and the heating and cooling rates are both 10°C per minute.
[0029] 3. In the temperature range of 150°C-199°C, the hydrogen-containing mixed gas (pressure is 0.5 bar) is passed into the hydride reaction bed. At this time, valves 2 and 4 are opened, and valve 6 is closed. During this stage, magnesium-based hydrogen storage The alloy fully absorbs hydrogen; then the temperature of the reaction bed rises to a high temperature range of 200°C-350°C, at this time valves 2 and 4 are closed, valve 6 is opened, and the hydride decomposes to release hydrogen with a high purity (purity is 6N).
Embodiment 2
[0031] 1. After the hydride reaction bed is filled with magnesium-based hydrogen storage alloy powder (grain size is 1-20nm), the packing density is 0.1-0.2g / cm 3 , The hydrogen-containing mixed gas is composed of 5% hydrogen and 95% argon gas.
[0032] 2. A continuous temperature cycle of 25°C-350°C is applied to the hydride reaction bed, and the heating and cooling rates are both 5°C per minute.
[0033] 3. In the temperature range of 25°C-200°C, a hydrogen-containing mixed gas (pressure of 1 bar) is passed into the hydride reaction bed. At this time, valves 2 and 4 are opened, and valve 6 is closed. During this stage, the magnesium-based hydrogen storage alloy Sufficient hydrogen absorption; then the temperature of the reaction bed is raised to a high temperature range of 201°C-350°C, at this time valves 2 and 4 are closed, valve 6 is opened, and the hydride decomposes to release hydrogen with a higher purity (purity is 6N).
Embodiment 3
[0035] 1. After the hydride reaction bed is filled with magnesium-based hydrogen storage alloy powder (grain size 1-20nm), the packing density is 0.3-0.5g / cm 3 , The mixed gas containing hydrogen is composed of 5% hydrogen, 90% argon, and 5% methane gas.
[0036] 2. A continuous temperature cycle of 50°C-300°C is applied to the hydride reaction bed, and the heating and cooling rates are both 10°C per minute.
[0037] 3. In the temperature range of 50°C-200°C, a hydrogen-containing mixed gas (pressure of 1 bar) is passed into the hydride reaction bed. At this time, valves 2 and 4 are opened, and valve 6 is closed. During this stage, the magnesium-based hydrogen storage alloy Sufficient hydrogen absorption; then the temperature of the reaction bed is raised to a high temperature range of 201°C-300°C, at this time valves 2 and 4 are closed, valve 6 is opened, and the hydride decomposes to release hydrogen with a higher purity (purity 6N and above).
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