BET: v/v_m = cx/((1−x)(1−(1−c)x)), x = p/p₀

Layer 1 — Physicsin the surface-science subtree

Brunauer–Emmett–Teller multilayer isotherm (BET 1938, JACS 60:309) generalises Langmuir to physisorption where multilayer stacking is energetically viable. Parameters: v = volume adsorbed, v_m = monolayer capacity, x = p/p₀ (p₀ =…

Related concepts

Langmuir isotherm: θ(p) = Kp/(1 + Kp)
BET at c=10, x=1/2: v/v_m = 20/11 (exact)

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