BET equation

GPTKB entity

Statements (33)
Predicate Object
gptkbp:instanceOf scientific equation
gptkbp:appliesTo porous materials
non-porous materials
gptkbp:assumes multilayer adsorption
gptkbp:c BET constant
gptkbp:commonIn gptkb:BET_surface_area_analysis
nitrogen adsorption
gptkbp:describes gas adsorption on solid surfaces
gptkbp:field physical chemistry
surface science
gptkbp:form 1/[v((P0/P)-1)] = (c-1)/(vmc) * (P/P0) + 1/(vmc)
gptkbp:generalizes gptkb:Langmuir_adsorption_model
https://www.w3.org/2000/01/rdf-schema#label BET equation
gptkbp:limitation assumes identical adsorption sites
assumes no lateral interactions
valid for relative pressures 0.05 < P/P0 < 0.35
gptkbp:namedAfter gptkb:Brunauer
gptkb:Emmett
gptkb:Teller
gptkbp:P0 saturation vapor pressure
gptkbp:PP equilibrium pressure
gptkbp:publishedIn 1938
gptkbp:requires adsorption isotherm data
gptkbp:usedFor determining specific surface area
gptkbp:variablesInclude P
v
c
P0
vm
gptkbp:via adsorbed gas volume
gptkbp:vm monolayer adsorbed gas quantity
gptkbp:bfsParent gptkb:BET_theory
gptkbp:bfsLayer 5