Term: carbon cenospheres
https://doi.org/10.1351/goldbook.C00826

Definition:
Porous or hollow carbonaceous sphere-like particles (frequently in the size range of a few to several hundreds of µm diameter) formed during pyrolysis, also in the course of combustion, of carbonaceous liquid droplets (e.g. heavy fuel) or solid particles (e.g. coal).

Related Terms:
1) pyrolysis (http://doi.org/10.1351/goldbook.P04961).

Source: PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 480 (https://doi.org/10.1351/pac199567030473)

Citation: 'carbon cenospheres' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.C00826

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