Introduction to Colloid and Surface Chemistry |
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Page 108
... Isotherms Three phenomena may be involved in physical adsorption : 1. Monomolecular adsorption . 2. Multimolecular ... isotherms into the five characteristic types shown in Figure 6.6 , examples of which are known . Type I isotherms show ...
... Isotherms Three phenomena may be involved in physical adsorption : 1. Monomolecular adsorption . 2. Multimolecular ... isotherms into the five characteristic types shown in Figure 6.6 , examples of which are known . Type I isotherms show ...
Page 114
... isotherms fit the Langmuir equation reasonably well . 3. The BET equation for multimolecular adsorption - Because ... isotherms . In addition , it reduces to the Langmuir equation at low pressures ; and type III isotherms are given in ...
... isotherms fit the Langmuir equation reasonably well . 3. The BET equation for multimolecular adsorption - Because ... isotherms . In addition , it reduces to the Langmuir equation at low pressures ; and type III isotherms are given in ...
Page 115
... isotherms If the BET equation applies to a type II isotherm , then a plot of P / v ( P - P ) versus P / P 。 gives a straight line of slope ( c - 1 ) / Umc and an intercept of 1 / vmc on the P / v ( P - P ) axis ( i.e. Um = 1 / [ slope ...
... isotherms If the BET equation applies to a type II isotherm , then a plot of P / v ( P - P ) versus P / P 。 gives a straight line of slope ( c - 1 ) / Umc and an intercept of 1 / vmc on the P / v ( P - P ) axis ( i.e. Um = 1 / [ slope ...
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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