Molecular sieve effect

{
  "id": "MLC-T-CHM-007519",
  "term": "Molecular sieve effect",
  "field": "Chemistry",
  "definition": "The phenomenon where a porous material selectively adsorbs or allows passage of molecules based on their size and shape, while excluding larger molecules. This effect arises from the precise pore dimensions of the material, which act as a filter. Zeolites and certain polymers are common examples of materials exhibiting this effect.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "internal surface"
  ],
  "references": [
    "PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 585 (https://doi.org/10.1351/pac197231040577)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/molecular-sieve-effect/"
}