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Catalycity is a macroscopic parameter to describe surface catalysis (heterogeneous catalysis). It is usually called a material property, due to its strong dependence on the surface material. This naming is not fully justified, since the catalycity not only dependent on the material but also on its environment.
Additional recommended knowledge
This process can be accelerated with the help of a catalyst. The catalyst provides an alternative reaction path, which is in general faster than the original.
Such and reaction path could be:
reaction at the surface:
Catalyctiy relates the number of reacting atoms to the number of atoms that hit a surface. Therefore, a catalycity of one means that all impinging particles do recombine.
The parameter catalycity is mainly used in hypersonics, i.e. the science high speed and high temperature flow. These kind of flows occur for instance in Atmospheric reentry.
In mixtures of gases where interactions between the different species occurs, the parameter catalycity is not appropriate.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Catalycity". A list of authors is available in Wikipedia.|