Specific surface area

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Scratches, represented by triangular shaped grooves, make the surface area bigger
Scratches, represented by triangular shaped grooves, make the surface area bigger

Specific surface area is a material property of solids which measures the total surface area per unit of mass[1], solid or bulk volume[2], or cross-sectional area[3].

It is a derived scientific value that can be used to determine the type and properties of a material (e.g. soil). It is defined either by surface area divided by mass (with units of m²/kg), or surface area divided by the volume (units of m²/m³ or m-1)

It has a particuliar importance in case of adsorption, heterogeneous catalysis, and reactions on surfaces.

[edit] References

  1. ^ http://goldbook.c60.kiev.ua/S05806.pdf IUPAC Compendium of Chemical Terminology 2nd Edition (1997)
  2. ^ http://www.soils.wisc.edu/~ss322/lectures/lec%208-11.pdf
  3. ^ http://www.russellwatergardens.com/SSA.htm
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