SURFACE AREA AND POROSITY
SURFACE AREA AND POROSITY
SURFACE AREA AND POROSITY
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Characteristics of Physical Adsorption<br />
<br />
1. Low heats of adsorption, no violent or disruptive structural<br />
changes.<br />
<br />
2. Can involve multiple layers of adsorbate, thus allowing for pore<br />
measurements.<br />
<br />
3. High temperatures tend to inhibit physical adsorption.<br />
<br />
4. Adsorption equilibrium is achieved quickly since no activation<br />
energy is generally required.<br />
<br />
5. Physical adsorption is fully reversible, allowing adsorbate to fully<br />
adsorb and desorb.
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