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Ammonia borane has been suggested as a storage medium for hydrogen, e.g. for when the gas is used to fuel motor vehicles. It can be made to release hydrogen on heating, being polymerized first to (NH 2 BH 2) n, then to (NHBH) n, [15] which ultimately decomposes to boron nitride (BN) at temperatures above 1000 °C. [16]
Chemical storage could offer high storage performance due to the high storage densities. For example, supercritical hydrogen at 30 °C and 500 bar only has a density of 15.0 mol/L while methanol has a hydrogen density of 49.5 mol H 2 /L methanol and saturated dimethyl ether at 30 °C and 7 bar has a density of 42.1 mol H 2 /L dimethyl ether.
A picosecond pulse of a 10-terawatt laser produced hydrogen–boron aneutronic fusions for a Russian team in 2005. [7] However, the number of the resulting α particles (around 10 3 per laser pulse) was low. In 2006, the Z-machine at Sandia National Laboratory, a z-pinch device, reached 2 billion kelvins and 300 keV. [8]
Dehydrogenation of amine-boranes is thermodynamically favourable, making the process attractive for hydrogen storage systems. Ammonia borane has attracted particular interest due to its high weight percent of hydrogen (19.6%). [6] [7] Dehydrogenation occurs in three steps, creating polyamino-boranes and borazines as insoluble side products.
BNNTS are packed with physicochemical features including high hydrophobicity and considerable hydrogen storage capacity and they are being investigated for possible medical and biomedical applications, including gene delivery, drug delivery, neutron capture therapy, and more generally as biomaterials [12] BNNTs are also superior to CNTs in the ...
Zip fuel, also known as high energy fuel (HEF), is any member of a family of jet fuels containing additives in the form of hydro-boron compounds, or boranes.Zip fuels offer higher energy density than conventional fuels, helping extend the range of jet aircraft.
Metal racks keep the fuel in controlled positions for physical protection and for ease of tracking and rearrangement. High-density racks also incorporate boron-10, often as boron carbide (Metamic, [1] [2] Boraflex, [2] Boral, [3] Tetrabor and Carborundum [4]) [5] [6] [2] or other neutron-absorbing material to ensure subcriticality. Water ...
The hydrogen can be regenerated for a fuel cell by catalytic decomposition of the borohydride with water, including successful hydration with synthetic urine: NaBH 4 + 2H 2 O → NaBO 2 + 4H 2. Direct borohydride fuel cells decompose and oxidize the borohydride directly, side-stepping hydrogen production and even producing slightly higher ...