Table 2
Different monolayer and multilayer isotherms.
| Monolayer/multilayer | Number of parameters | Adsorption model |
|---|---|---|
| Monolayer isotherms | Two parameters | Dubinin and Radushkevich (DR), 1947; Flory, 1953; Freundlich, 1909; Langmuir, 1918; Volmer and Mahnert, 1925; Temkin and Pyzhev, 1940 |
| Three parameters | de Boer, 1953; Fritz and Schluender (III), 1974; Hill, 1910; Khan et al., 1996; Radke and Prausnitz, 1972; Redlich and Peterson, 1959; Sips, 1948; Toth, 1971 | |
| Four parameters | Astakhov and Dubinin, 1971; Fritz and Schluender (IV), 1974 | |
| Five parameters | Fritz and Schluender (V), 1974 | |
| Multilayer isotherms | Two parameters | Halsey, 1952 |
| Three parameters | Aranovich, 1991; BET Model (Brunauer et al., 1938); McMillan and Teller, 1951 | |
| Four parameters | Anderson (IV), 1946; GAB model (Anderson, 1946; de Boer, 1953; Guggenheim, 1966); n-layer BET (Yu et al., 2016) | |
| Five parameters | Anderson (V), 1946 |