aggregate (rus. агрегат) — ensemble of particles weakly linked together.


Aggregates can easily fall into the primary (initial) particles under certain external effects (e.g. mechanical). In various areas of science and technology, the term "aggregate" refers to objects differing in structure, size and properties. For example, when describing colloidal systems, powders or porous bodies, it usually refers to microscopic objects, while in soil science or geology the same term describes macroscopic objects.

When sintered or aged, aggregates can form agglomerates, in which the links between the particles are stronger than in the aggregates.


  • Smirnov Andrey V.
  • Tolkachev Nikolay N.


  1. Manual on catalyst characterization (Recommendations 1991) // Pure Appl. Chem. 1991. V. 63. P. 1227–1246. —
  2. Characterization of porous solids III: proceedings of the IUPAC Symposium (COPS III), Marseille, France, May 9–12, 1993 // Ed. by J. Rouquerol et al. Studies in surface science and catalysis. 1993. V. 87, xiv. — 802 p.
  3. Dictionary of Nanotechnology, Colloid and Interface Science/ Ed. by L. L. Schramm. — John Wiley & Sons Ltd, 2008. — 308 p.

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