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In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
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A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
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Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
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The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
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Boron Nitride for Hydrogen Storage.

Abhijeet Lale1, Samuel Bernard1, Umit B Demirci2

  • 1University of Limoges, CNRS, IRCER, UMR 7315, 87000, Limoges, France.

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Summary
This summary is machine-generated.

Boron nitride (BN) shows promise for hydrogen storage, with over 15 years of research exploring both molecular and chemical hydrogen storage. Further experimental work is needed to realize its potential at room conditions.

Keywords:
absorptionboron nitrideenergy storagehydrogennanostructures

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Nanotechnology

Background:

  • Boron nitride (BN) has been investigated for hydrogen storage since the early 2000s.
  • Research has focused on both physisorption and chemisorption of molecular hydrogen (H2).
  • BN has also been explored for chemical hydrogen storage applications.

Purpose of the Study:

  • To provide a comprehensive review of experimental and computational findings on boron nitride for hydrogen storage.
  • To identify promising avenues for future research and development.
  • To assess the potential of BN as a hydrogen storage material.

Main Methods:

  • Review of experimental laboratory results.
  • Analysis of computational predictions and simulations.
  • Survey of literature on boron nitride's interaction with hydrogen.

Main Results:

  • Boron nitride has been studied for hydrogen storage across a wide temperature range (-196°C to 300°C).
  • Both molecular and chemical hydrogen storage mechanisms have been investigated.
  • Computational predictions suggest BN's potential for room-condition hydrogen storage.

Conclusions:

  • Boron nitride is a promising material for hydrogen storage, particularly at room conditions.
  • Experimental validation is crucial to confirm the theoretical predictions.
  • Further research is needed to optimize BN for practical hydrogen storage applications.