By Jean Rouquerol, Visit Amazon's Françoise Rouquerol Page, search results, Learn about Author Central, Françoise Rouquerol, , Kenneth S.W. Sing
The declared target of this booklet is to supply an introductory overview of some of the theoretical and useful facets of adsorption by means of powders and porous solids with specific connection with fabrics of technological value. the first objective is to fulfill the wishes of scholars and non-specialists, who're new to floor technological know-how or who desire to use the complicated options now on hand for the decision of floor region, pore dimension and floor characterization. additionally, a serious account is given of contemporary paintings at the adsorptive homes of activated carbons, oxides, clays and zeolites. Key good points * presents a entire remedy of adsorption at either the gas/solid interface and the liquid/solid interface * contains chapters facing experimental technique and the translation of adsorption information acquired with porous oxides, carbons and zeolites * options catch the significance of heterogeneous catalysis, chemical engineering and the construction of pigments, cements, agrochemicals, and prescribed drugs
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Additional info for Adsorption by powders and porous solids: principles, methodology, and applications
A primary valence bond in the direction of its greatest strength is estimated It is evident that at 10 4 -10 5 cal. 3 A. appreciable changes in valence distance seldom have to be considered in organic molecules. Should they occur, they will be only of the order of In contrast, variations in valence angle of the order of are to be expected and are frequently observed. The primary valences are thus much less variable in respect to distance than in respect hundredth A. 10-15 to angle. The first indication of the existence of such a relationship is by the Bayer tension theory] today by the aid of available experimental data we can extend our view to some considerable extent to the afforded quantitative side.
Dielectric constant of the substance. r other types of crystal. ~-N-a is o termed the molecular polarization P. In particles possessing no permanent dipole moment, equation (5), by application of the Maxwell relation between refractive index and dielectric constant, becomes the Lorentz-Lorenz equation: n2 - 1 n* + Z p M 4ir N . a ^ 6 R> (6) which combines polarizability with refractive index; the right hand side of equation (6) is termed molar refraction and is denoted by R. 94 X 10~ 21 (w 2 - (7) 1).
Table 10 gives a few relevant data, taken again from H. A. Stuart, which indicate that in deformations of the order of 10, energy values of the order of 1000-2000 On the other hand, the work required to extend cal. per mol are involved. a primary valence bond in the direction of its greatest strength is estimated It is evident that at 10 4 -10 5 cal. 3 A. appreciable changes in valence distance seldom have to be considered in organic molecules. Should they occur, they will be only of the order of In contrast, variations in valence angle of the order of are to be expected and are frequently observed.
Adsorption by powders and porous solids: principles, methodology, and applications by Jean Rouquerol, Visit Amazon's Françoise Rouquerol Page, search results, Learn about Author Central, Françoise Rouquerol, , Kenneth S.W. Sing