Which is the equation for Freundlich adsorption isotherm?
Which is the equation for Freundlich adsorption isotherm?
The Freundlich Isotherm
| Adsorption isotherm | Equationa |
|---|---|
| Freundlich | Qe = kfCe(1/nf) also used as Qe = kfCen as used by oil processors x/m = KCn |
| Brunauer-Emmet-Teller (BET) | Qe = (BCeQ)/(Ce-Cs)[1 +(B – 1)(Ce/Cs)] |
| Langmuir | Qe = (QbCe)/(1 + bCe) |
| Linear | Qe = KpCe |
Which is Freundlich’s equation?
A. xm=Kp1/n. B.
What do you mean by Freundlich adsorption isotherm?
The Freundlich equation or Freundlich adsorption isotherm, an adsorption isotherm, is an empirical relationship between the quantity of a gas adsorbed into a solid surface and the gas pressure. This equation is known as Freundlich adsorption isotherm or Freundlich adsorption equation.
How is Freundlich isotherm derived?
The Freundlich adsorption isotherm is mostly presented as an empirical equation and the (fractal) Langmuir adsorption isotherm is derived from kinetics. However, their constants are determined by thermodynamic approach. It is irrelevant to use both adsorption isotherm separately.
What is adsorption isotherm describe Freundlich adsorption isotherm?
Adsorption isotherm is the variation of the mass of the gas (adsorbate) adsorbed per gram of the adsorbent with pressure at constant temperature. The Freundlich adsorption isotherm is the mathematical representation for the variation of the extent of adsorption (x/m) with pressure (P) at a given temperature.
What is the difference between Freundlich and Langmuir isotherm?
The key difference between Freundlich and Langmuir adsorption isotherms is that Freundlich adsorption isotherm is empirical, whereas Langmuir adsorption isotherm is theoretical. The adsorption isotherm is a primary method that we can use to predict the adsorption capacity of a particular substance.
What is the value of 1 n in Freundlich adsorption isotherm?
xm=kp1/n the value of n is always greater than 1.
