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The definition of pore size according to the International Union of
Pure and Applied Chemistry (IUPAC) is that micropores are smaller than
2 nm in diameter, mesopores 2 to 50 nm and macropores larger than 50
nm. However this definition is somewhat in conflict with the definition of
nanoscale objects. Nanoporous materials are a subset of porous materials,
typically having large porosities (greater than 0.4), and pore diameters
between 1- 100 nm. In the field of chemical functional porous materials, it
is better to use the term "nanoporous" consistently to refer to this class of
porous materials having diameters between 1 and 100 nm. For most
functional applications, pore sizes normally do not exceed 100 nm
anyway. It is noted that nanoporous materials actually encompass some
microporous materials to all mesoporous materials.

-------NANOPOROUS MATERIALS - AN OVERVIEW
By G. Q. Lu and  X. S. ZHAO
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11Â¥2009-11-16 15:25:05
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Originally posted by zhaoyangqufu at 2009-11-16 09:41:

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Originally posted by ÖñÓñóï at 2009-11-16 18:18:



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