Energy & Green Tech
Research led by the University of Strathclyde suggests that solar energy can be accessed and converted into hydrogen—a clean and renewable fuel.
May 5, 2022
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Energy & Green Tech
As the world faces an increasing demand for clean and sustainable energy sources, scientists are turning to the power of photosynthesis for inspiration. With the goal of developing new, environmentally friendly techniques ...
May 10, 2023
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Business
As renewable energy sources like wind and solar ramp up, they can be used to sustainably generate hydrogen fuel. But implementing such a strategy on a large scale requires land and water dedicated to this purpose.
Sep 21, 2023
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Business
A new technology that generates hydrogen from conventional natural gas, or renewable natural gas made from biomass, could be the next big thing to advance California's Hydrogen Highway, fuel cell vehicles and trucks and to ...
May 27, 2021
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Energy & Green Tech
Hydrogen is indispensable to successfully transitioning to renewables and meeting climate targets. It is the essential building block of sector coupling. While it provides an ecofriendly option to meet industry demand for ...
Apr 2, 2020
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Business
A material 3M has been working on for decades could be key to unlocking cost-effective production of green hydrogen, a promising but expensive renewable fuel source.
Oct 5, 2022
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Energy & Green Tech
Rice University engineers and scientists have created a sweet way for petrochemical refineries to turn a smelly byproduct into cash.
Oct 31, 2022
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Energy & Green Tech
Adam Brandt, an energy science and environmental engineer at Stanford University, has conducted a life-cycle assessment of hydrogen production from natural subsurface accumulations, also known as geological hydrogen extraction, ...
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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Engineering
Refining metals, manufacturing fertilizers and powering fuel cells for heavy vehicles are all processes that require purified hydrogen. But purifying, or separating, that hydrogen from a mix of other gases can be difficult, ...
Mar 29, 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
