Energy & Green Tech
Kevin Kendall pulls up at the only green hydrogen refuelling station in Birmingham, Britain's second-biggest city, and swiftly fills his sedan with clean gas.
Aug 16, 2022
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Energy & Green Tech
In its plan to retool the economy, the New Zealand government highlighted green hydrogen as a game-changing fuel. It can indeed be used to make climate-friendly fertilizers and steel or to power some modes of transport that ...
Aug 02, 2022
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Energy & Green Tech
Hydrogen production should be carefully regulated and consumers informed about emissions credentials if Australia is to achieve a sustainable energy economy and net zero emissions by 2050, QUT experts warn.
Aug 01, 2022
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Energy & Green Tech
Hydrogen production takes place using natural gas as the raw material, combined with a very special ceramic membrane. Both hydrogen production and CO2 capture are achieved in a single step, which makes the method highly energy ...
Jul 28, 2022
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Energy & Green Tech
In 2016, experts writing in Nature listed seven breakthroughs in how we process chemicals that could change the world for the better. We believe we've just ticked one of those off the list.
Jul 15, 2022
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Engineering
Southwest Research Institute is testing the durability of valves on fuel tanks for hydrogen-powered vehicles. Hydrogen is increasingly being considered as an alternative to fossil fuels in the transportation sector. The work ...
Jul 13, 2022
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Energy & Green Tech
Hydrogen is carving out its place in the world of renewable energy. Regional developments like hydrogen valleys and hydrogen islands are serving as blueprints for larger ecosystems to produce and consume this versatile fuel ...
Jun 23, 2022
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Energy & Green Tech
Researchers from North Carolina State University have developed a new technique for extracting hydrogen gas from liquid carriers that is faster, less expensive and more energy efficient than previous approaches.
May 23, 2022
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Energy & Green Tech
A new energy-efficient way to produce hydrogen gas from ethanol and water has the potential to make clean hydrogen fuel a more viable alternative for gasoline to power cars.
May 23, 2022
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Energy & Green Tech
Hydrogen has emerged as the energy technology that could help nations like Australia to decarbonize their economies. But did you know that, beyond green and blue hydrogen, there's a whole rainbow of hydrogen types?
May 17, 2022
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Hydrogen (pronounced /ˈhaɪdrədʒən/) is the chemical element with atomic number 1. It is represented by the symbol H. At standard temperature and pressure, hydrogen is a colorless, odorless, nonmetallic, tasteless, highly flammable diatomic gas with the molecular formula H2. With an atomic weight of 1.00794 u, hydrogen is the lightest element.
Hydrogen is the most abundant chemical element, constituting roughly 75% of the universe's elemental mass. Stars in the main sequence are mainly composed of hydrogen in its plasma state. Elemental hydrogen is relatively rare on Earth. Industrial production is from hydrocarbons such as methane with most being used "captively" at the production site. The two largest uses are in fossil fuel processing (e.g., hydrocracking) and ammonia production mostly for the fertilizer market. Hydrogen may be produced from water by electrolysis at substantially greater cost than production from natural gas.
The most common isotope of hydrogen is protium (name rarely used, symbol H) with a single proton and no neutrons. In ionic compounds it can take a negative charge (an anion known as a hydride and written as H−), or as a positively-charged species H+. The latter cation is written as though composed of a bare proton, but in reality, hydrogen cations in ionic compounds always occur as more complex species. Hydrogen forms compounds with most elements and is present in water and most organic compounds. It plays a particularly important role in acid-base chemistry with many reactions exchanging protons between soluble molecules. As the only neutral atom with an analytic solution to the Schrödinger equation, the study of the energetics and bonding of the hydrogen atom played a key role in the development of quantum mechanics.
Hydrogen is important in metallurgy as it can embrittle many metals, complicating the design of pipelines and storage tanks. Hydrogen is highly soluble in many rare earth and transition metals and is soluble in both nanocrystalline and amorphous metals. Hydrogen solubility in metals is influenced by local distortions or impurities in the crystal lattice.
This text uses material from Wikipedia, licensed under CC BY-SA
