Shanxian Chemical
SUPPLEMENTS
How To Make Hydrogen Gas Generator
The method of hydrogen generator
To make hydrogen generator, you need to understand the reason first. Hydrogen, a light and active element, is often found in water and various compounds. The method of hydrogen production is mostly derived from the decomposition of water or the reaction of metals and acids.
Hydrogen is produced by splitting water
Water, the molecular formula is\ (H ² O\), which is composed of hydrogen and oxygen. If you want to get hydrogen, you can use the method of electrolysis. Prepare an electrolyzer first, use graphite or platinum as an electrode, and put it in water. Connect to a DC power supply. When the current passes through the water, the water molecules decompose. At the anode, the oxygen ions lose electrons and escape into oxygen; at the cathode, the hydrogen ions gain electrons into hydrogen gas. The chemical reaction formula is:\ (2H2O O\ stackrel {electrolytic }{=\!=\!=} 2H2O ↑ + O ₂↑\) 。
is the conductivity of increasing water, and a little sulfuric acid or sodium hydroxide can be added, but the dosage should be small to avoid impurities. During electrolysis, the voltage and current need to be controlled. If the voltage is too low, the reaction will be slow, and if it is too high, the energy consumption will be greatly increased. And the choice of electrodes is also critical. Graphite electrodes are inexpensive and easy to lose. Although platinum electrodes are expensive, they have good stability.
The reaction of metals and acids to produce hydrogen
can also be used. Common metals such as zinc, iron, magnesium, etc., can react with acid to produce hydrogen. Take zinc and dilute sulfuric acid as an example, place zinc particles in a container and slowly inject dilute sulfuric acid. The reaction is violent, and hydrogen escapes in an instant. The reaction formula is:\ (Zn + H 2O SO ₄ =\!=\!= Zn SO + H ₂↑\) 。
When acid is selected, both sulfuric acid and hydrochloric acid can be used. However, hydrochloric acid is volatile, and hydrogen gas or hydrogen chloride-containing impurities are obtained, which need to be removed. The morphology of the metal also affects the reaction rate. Powdered metals react faster than bulk metals because of their large contact area with acid.
The structure of the hydrogen generator should be designed according to the selected method. If it is an electrolysis method, an electrolytic cell, electrodes, power supply and gas collection device should be included; if it is a metal and acid reaction, a reaction vessel, an acid addition device and a hydrogen collection place should be set up. And no matter what method, safety is paramount. Hydrogen is flammable, and the operation place should be protected from open flames. The collection device should be well sealed to prevent leakage and risk.
To make hydrogen generator, you need to understand the reason first. Hydrogen, a light and active element, is often found in water and various compounds. The method of hydrogen production is mostly derived from the decomposition of water or the reaction of metals and acids.
Hydrogen is produced by splitting water
Water, the molecular formula is\ (H ² O\), which is composed of hydrogen and oxygen. If you want to get hydrogen, you can use the method of electrolysis. Prepare an electrolyzer first, use graphite or platinum as an electrode, and put it in water. Connect to a DC power supply. When the current passes through the water, the water molecules decompose. At the anode, the oxygen ions lose electrons and escape into oxygen; at the cathode, the hydrogen ions gain electrons into hydrogen gas. The chemical reaction formula is:\ (2H2O O\ stackrel {electrolytic }{=\!=\!=} 2H2O ↑ + O ₂↑\) 。
is the conductivity of increasing water, and a little sulfuric acid or sodium hydroxide can be added, but the dosage should be small to avoid impurities. During electrolysis, the voltage and current need to be controlled. If the voltage is too low, the reaction will be slow, and if it is too high, the energy consumption will be greatly increased. And the choice of electrodes is also critical. Graphite electrodes are inexpensive and easy to lose. Although platinum electrodes are expensive, they have good stability.
The reaction of metals and acids to produce hydrogen
can also be used. Common metals such as zinc, iron, magnesium, etc., can react with acid to produce hydrogen. Take zinc and dilute sulfuric acid as an example, place zinc particles in a container and slowly inject dilute sulfuric acid. The reaction is violent, and hydrogen escapes in an instant. The reaction formula is:\ (Zn + H 2O SO ₄ =\!=\!= Zn SO + H ₂↑\) 。
When acid is selected, both sulfuric acid and hydrochloric acid can be used. However, hydrochloric acid is volatile, and hydrogen gas or hydrogen chloride-containing impurities are obtained, which need to be removed. The morphology of the metal also affects the reaction rate. Powdered metals react faster than bulk metals because of their large contact area with acid.
The structure of the hydrogen generator should be designed according to the selected method. If it is an electrolysis method, an electrolytic cell, electrodes, power supply and gas collection device should be included; if it is a metal and acid reaction, a reaction vessel, an acid addition device and a hydrogen collection place should be set up. And no matter what method, safety is paramount. Hydrogen is flammable, and the operation place should be protected from open flames. The collection device should be well sealed to prevent leakage and risk.
Scan to WhatsApp
