Energy & Green Tech
Australia's plans to produce hydrogen using fossil fuels carries significant risks and could create an industry that leads to an increase in greenhouse gas emissions, researchers from The Australian National University (ANU) ...
Nov 18, 2021
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Energy & Green Tech
No single hydrogen technology should be prioritized, says a new study, and the production, distribution, and use of hydrogen needs to be optimized.
Oct 20, 2021
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Energy & Green Tech
A new life-cycle analysis of potentially low-greenhouse-gas options for producing hydrogen in Europe finds that only hydrogen produced using renewable electricity can be effectively zero-emission, and that hydrogen pathways ...
Oct 13, 2021
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Automotive
A Seattle engineering company is building one of the world's first zero-emission engines for a massive mining truck in a warehouse packed with "Star Wars" memorabilia and machines named after "Saturday Night Live" characters.
Sep 15, 2021
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15
Energy & Green Tech
Members of the consortium running the U.K.'s first hydrogen blended gas project are hailing it as a success. The project, known as HyDeploy, has been running at Keele University, where both university buildings and homes ...
Energy & Green Tech
As the United States races to achieve its goal of zero-carbon electricity generation by 2035, energy providers are swiftly ramping up renewable resources such as solar and wind. But because these technologies churn out electrons ...
Sep 1, 2021
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Energy & Green Tech
The UK's long-awaited hydrogen strategy has set out the government's plans for "a world-leading hydrogen economy" that it says would generate £900 million (US$1.2 million) and create over 9,000 jobs by 2030, "potentially ...
Aug 18, 2021
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Energy & Green Tech
"Blue" hydrogen—an energy source that involves a process for making hydrogen by using methane in natural gas—is being lauded as a clean, green energy to help reduce global warming. But Cornell and Stanford University ...
Aug 12, 2021
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Energy & Green Tech
The U.S. is counting on hydrogen to play a significant role in the low-carbon economy of the future, but fundamental questions about transportation, storage and cost need to be addressed in order to integrate hydrogen gas ...
Jun 28, 2021
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Energy & Green Tech
Green hydrogen, a source of clean energy that can be generated without using fossil fuels, has recently gained immense attention, as it can be potentially used to promote carbon neutrality. Korean researchers have succeeded ...
Jun 17, 2021
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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
