https://doi.org/10.1351/goldbook.C00773
Heating to high temperatures in air or oxygen.
Notes:
  1. The term is most likely to be applied to a step in the preparation of a @[email protected]
  2. In @[email protected]@[email protected] processing the term applies to the heating of a @[email protected] containing metal compounds to convert it into an @[email protected]
  3. Modified from previous definition. The definition proposed here is more explicit about the elevated temperatures that are required.
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 1806 [Terms] [Paper]