Download PDF by Jean Rouquerol, Visit Amazon's Françoise Rouquerol Page,: Adsorption by Powders and Porous Solids: Principles,

By Jean Rouquerol, Visit Amazon's Françoise Rouquerol Page, search results, Learn about Author Central, Françoise Rouquerol, , Kenneth S.W. Sing

ISBN-10: 0080526012

ISBN-13: 9780080526010

ISBN-10: 0125989202

ISBN-13: 9780125989206

The declared aim of this ebook is to supply an introductory assessment of a few of the theoretical and functional 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 technology or who desire to use the complex innovations now on hand for the decision of floor region, pore dimension and floor characterization. furthermore, a serious account is given of contemporary paintings at the adsorptive homes of activated carbons, oxides, clays and zeolites. Key positive aspects * offers a entire therapy 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 * ideas trap the significance of heterogeneous catalysis, chemical engineering and the creation of pigments, cements, agrochemicals, and prescribed drugs

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Extra info for Adsorption by Powders and Porous Solids: Principles, Methodology and Applications

Example text

The more usual progressive decrease in the differential enthalpy is generally to be expected if the adsorbent surface is energetically heterogeneous. However, it is necessary to bear in mind that there may be compensatory effects involved. Thus, the computer simulation studies of Steele and Bojan (1989) have indicated that for the adsorption of krypton on a model heterogeneous surface an almost constant overall energy is the result of a significant decrease in the adsorbent-adsorbate interactions being almost exactly balanced by an increase in the lateral adsorbate-adsorbate interactions.

B) The adsorbent is assumed to remain inert and therefore to undergo no change in its surface area, internal energy or entropy at any stage of physisorption. (c) By making use of the 'Gibbs dividing surface' we define the associated 'surface excess' properties, which are directly assessed from experimental measurements, without making any assumptions concerning the state, location or thickness of the adsorbed layer. (d) Since the role of the adsorbent is only to provide an adsorption potential, we may picture the adsorption as a transition from a single 3-D gas phase to a 2-D adsorbed film.

1. Differential quantities of adsorption . . . . . . . . . . . . . . 2. Integral molar quantities of adsorption . . . . . . . . . . . . Derivation of the adsorption quantities from calorimetric data . . . . . . 1. Discontinuous procedure . . . . . . . . . . . . . . . . . . 2. Continuous procedure . . . . . . . . . . . . . . . . . . . Methods for the determination of differential enthalpies of adsorption . . . 1. Gas adsorption calorimetry .

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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


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