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T. D. Khokhlova, Yu. S. Nikitin
Adsorption of proteins on precipitated high porous silica and silica gel
Abstract
Adsorption characteristics of proteins on high porous silica (specific
surface area 580 mVg and apparent density 0,26 g/cm3) and on silica gel (600
mz/g and 0,53 g/cm3) are compared. Adsorption isotherms and kinetics for three
proteins are obtained. Maximum adsorptions on high porous silica for
gamma-globulin (M 150 000) and hemoglobin (M 64 000) are 10 and 5 times greater
than on silica gel respectively. For lysozyme (M 14 000) maximum adsorptions on
two silicas are approximately equal. On kinetic curves for bath silicas are
observed two regions with much different adsorption velocities.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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