Introduction to Colloid and Surface Chemistry |
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Page 110
... condensation ; for example , the integral heat of physical adsorption of nitrogen on an iron surface is c . -10 kJ mol1 ( the heat of liquefaction of nitrogen is -5.7 kJ mol1 ) . Heats of chemisorption are , in general , much larger ...
... condensation ; for example , the integral heat of physical adsorption of nitrogen on an iron surface is c . -10 kJ mol1 ( the heat of liquefaction of nitrogen is -5.7 kJ mol1 ) . Heats of chemisorption are , in general , much larger ...
Page 116
... condensation in porous solids , the effective pore dia- meters usually being between 2 nm and 20 nm . The upper limit of adsorption is mainly governed by the total pore volume . Types III ( e.g. bromine on silica gel at 352 K ) and V ...
... condensation in porous solids , the effective pore dia- meters usually being between 2 nm and 20 nm . The upper limit of adsorption is mainly governed by the total pore volume . Types III ( e.g. bromine on silica gel at 352 K ) and V ...
Page 117
... condensation theory provides a satisfactory explana- tion of the phenomenon of adsorption hysteresis , which is frequently observed for porous solids . ' Adsorption hysteresis ' is a term which is used when the desorption isotherm curve ...
... condensation theory provides a satisfactory explana- tion of the phenomenon of adsorption hysteresis , which is frequently observed for porous solids . ' Adsorption hysteresis ' is a term which is used when the desorption isotherm curve ...
Contents
THE COLLOIDAL STATE | 7 |
Preparation and Purification of Colloidal Systems | 10 |
KINETIC PROPERTIES | 19 |
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adsorbed adsorption adsorption isotherm agent aggregation approximately behaviour Brownian Brownian motion calculated capillary cell chemisorption cm³ coagulation coefficient colloidal dispersions colloidal systems condensation constant contact angle counter-ions curve decreases density detergent diffusion dispersion medium droplets effect electric double layer electrolyte electron emulsifying emulsion equation equilibrium example experimental fatty acids Figure film flow foam forces free energy hydrocarbon hydrocarbon chains hydrophilic increase interaction interface involved ionic ions light scattered lyophobic material measured membrane method micelle micellisation microscope mixed film mN m¹ mol dm³ mol¹ molecules monolayer osmotic pressure phase physical adsorption polymer polymerisation pore potential energy protein radius ratio relative molecular mass repulsion result sample sedimentation shear sodium solid surface soluble solvation solvent spherical particles stabilising stability surface conductance surface tension surface-active surfactant technique temperature theory thickness tion usually V/Vm velocity viscosity volume Waals wetting zero zeta potential