Sản phẩm - Hydro - เมสเซอร์ ประเทศไทย

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Hydrogen

Chemical Symbol:

Occurrence:

On Earth mainly in combination with water; with certain chemical reactions, hydrogen occurs briefly in atomic form and is then highly reactive

Boiling point:

-253 °C

Freezing point:

-259 °C

Chemical properties:

Colorless and odorless, element with the lowest density, lighter than air, very reactive. In air, hydrogen burns to water with a weak bluish flame. In mixtures with gaseous oxygen, H2 reacts highly explosively to ignition (oxyhydrogen reaction).

Extraction:

Parallel oxidation: Natural gas reacts with oxygen to H2 and carbon monoxide. Vapor reforming: Under high temperature and high pressure, methane generates hydrogen. Chlor-alkali electrolysis: Electric current applied to sodium chloride solution produces sodium hydroxide, chlorine and H2.

Hydrogen is playing a key role in the energy transition by helping reduce carbon dioxide emissions in industrial applications and the mobility sector. Today, when combined with fuel cells and electric motors, hydrogen powers cars, trucks, buses, trains, and industrial equipment — all without releasing harmful emissions into the atmosphere, producing only water vapor as a byproduct.

Traditional applications of hydrogen include its use as a fuel and welding gas, as well as in the production of ammonia and various other chemical compounds. It is also used in iron ore reduction, as a coolant, a fuel gas, and a packaging gas. Hydrogen plays a role in annealing high-alloy steel, reducing oxides in molten metals, and in the glass melting process.

In the periodic table, hydrogen holds a special place — first period, first group, atomic number 1 — and that reflects its true nature: it was the first element formed after the Big Bang and remains the most abundant element in the universe to this day.

A hydrogen atom consists of just one proton and one electron, making it the simplest and lightest atom. That’s why—despite accounting for 93 percent of all atoms in our solar system—it makes up “only” 75 percent of the total mass. On Earth, however, hydrogen is extremely rare, comprising just 0.12 percent of the planet’s mass. Yet that's still enough to cover more than two-thirds of Earth's surface with hydrogen’s most important compound: water (H₂O).

The existence of hydrogen was first demonstrated in 1766. In 1787, Antoine Laurent de Lavoisier discovered that water could be produced from it and gave the gas its scientific name, “hydrogenium,” derived from the Greek word hydor, meaning “water.” For over a century, hydrogen—some of which is generated as a byproduct of industrial chemical processes—has been used in applications such as metalworking, fertilizer production, and cooling. Initially, hydrogen was produced through steam reforming, where natural gas is catalytically split into hydrogen as a primary output. Today, green hydrogen is produced by water electrolysis using electricity from renewable energy sources. One kilogram of hydrogen contains as much energy as 2.8 kilograms of gasoline.