Sedimentation of a solid material (a precipitate) from a liquid solution in
which the material is present in amounts greater than its
solubility in the liquid.
Note:
When
precipitation occurs in
sol-
gel processing,
sol particles have
aggregated to a size where gravitational forces cause them to sink or float.
Generally, aggregation arises from a change in the
sol that reduces the interparticle repulsion.
Source:
PAC, 2007, 79, 1801
(Definitions of terms relating to the structure and processing of sols, gels, networks,
and inorganic-organic hybrid materials (IUPAC Recommendations 2007))
on page 1824
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
