Sunday, June 2, 2013

What are interstitial hydrides?

Well, first of all, a hydride is basically any compound
that hydrogen forms with another element.


Hydrides are
classified into three categories, according to the nature of their bonding.  Saline
hydrides have an ionic bond.  Covalent hydrides have a covalent bond.  Interstitial
hydrides have a metallic bond.  These compounds are
non-stoichiometric (which means the number of atoms of the elements presented cannot be
represented by a ratio of small whole numbers), and their composition varies with
temperature and pressure.


One of the most common
interstitial hydrides is palladium - which has been considered as a means to carry
hydrogen for fuel cells.

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