Introduction to Colloid and Surface Chemistry |
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Page 104
... physical adsorption and the latter for chemisorption . When adsorption takes place , gas molecules become immobi- lized ( if the adsorption is localized ) , or they are restricted to two - dimensional motion . Adsorption processes are ...
... physical adsorption and the latter for chemisorption . When adsorption takes place , gas molecules become immobi- lized ( if the adsorption is localized ) , or they are restricted to two - dimensional motion . Adsorption processes are ...
Page 111
... physical adsorption on porous solids , it does not give the complete picture . The capillary condensation theory provides a satisfactory explanation of the phenomenon of adsorption hysteresis , which is frequently observed for porous ...
... physical adsorption on porous solids , it does not give the complete picture . The capillary condensation theory provides a satisfactory explanation of the phenomenon of adsorption hysteresis , which is frequently observed for porous ...
Page 114
... adsorption isotherms fit the Langmuir equation reasonably well . 3. The BET equation for multimolecular adsorption - Because the forces acting in physical adsorption are similar to those operating in liquefaction ( i.e. van der Waals ...
... adsorption isotherms fit the Langmuir equation reasonably well . 3. The BET equation for multimolecular adsorption - Because the forces acting in physical adsorption are similar to those operating in liquefaction ( i.e. van der Waals ...
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acid adsorbed adsorption adsorption isotherm approximately aqueous behaviour Brownian calculated cell charged surface chemisorption cm-¹ cm³ coefficient colloidal dispersions colloidal particles colloidal systems constant contact angle counter-ions curve cylinder decreases deflocculated deformation depends detergent diffusion dispersion medium distance droplets effect electrical double layer electrode electrolyte emulsifying equation equilibrium example Figure film flocculation flocculation concentration flow hydrocarbon chains hydrophilic increase interaction interface intrinsic viscosity ionic ions isotherms light scattered material measured membrane method micelles mixed film molecular weight molecules monolayer monomolecular motion O/W emulsions orientated osmotic pressure physical adsorption plate polymer polymerization pores porous potential energy potential gradient protein ratio relative repulsive sample sedimentation shear soaps sodium solid surface soluble solution solvation solvent spherical particles stability Stern layer stress surface tension surface-active surfactant temperature theory thermal thixotropic valency vapour pressure velocity viscoelastic viscometer volume W/O emulsions Waals wetting zero zeta potential