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Samonin, V. V.; Grigor’eva, L. V.; Dalidovich, V. V.

doi:10.1023/a:1013054515082

Cited by 2 publications

(1 citation statement)

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“…With a further increase in the adsorbing fi ller a The coeffi cient of utilization of the equilibrium dynamic capacity was determined as k = а d /а e , where а d is the dynamic capacity of CSAM, determined at the moment when the water vapor breakthrough becomes 10%, and а e is the equilibrium dynamic capacity of CSAM, determined at the moment when the water vapor breakthrough becomes 100% [22]. content, these parameters decrease.…”

Section: Methodsmentioning

confidence: 99%

Physicochemical properties of composite sorption-active materials based on zeolite and fluorinated ethylene derivatives

Ferapontova¹,

Gladyshev²,

Ferapontov³

et al. 2012

Russ J Appl Chem

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A procedure was suggested for preparing composite sorption-active materials based on zeolite and fl uorinated ethylene polymers. The morphology of these materials, their resistance to mechanical action, and their ability to sorb water vapor under static and dynamic conditions were examined.In the past 10-15 years, in the world practice of adsorbent preparation there has been growing trend toward the use of composite sorption-active materials (CSAMs) [1][2][3][4][5][6][7][8][9][10][11]. Composite sorption-active materials are materials of matrix structure, because they usually consist of a plastic base (matrix) and inclusions (fi llers), suitable for mixing and subsequent forming. The matrix plays the role of a binder determining the strength and plasticity of the material as a whole under the action of mechanical, hydraulic, and other loads. Sorption-active materials play the role of fi llers. Also the material can contain additives activating it or imparting to it specifi c properties. The composition, structure, dispersity, and relative content of the sorption-active materials not only determine the adsorption properties of CSAMs, but also affect the strength and rigidity of the material. The advantages of CSAMs and prospects for their use are determined by the fact that they frequently exhibit properties that are not shown by any of the components taken separately.However, in practice it is relatively diffi cult to correctly choose the matrix and adsorbent-fi ller materials and the process parameters of CSAM fabrication ensuring preparation of an adsorbing material (especially nanoporous) with the parameters required for solving a specifi c technical task [2,[12][13][14][15][16][17]. For example, for using adsorbing materials in gas separation and drying systems operating by the PSA principle (Pressure Swing Adsorption, an adsorption method for separation of gas mixtures, suggested by Skarstrom; its distinctive feature is that the adsorption and desorption cycles are performed at the same temperature, Т а ≈ Т d , but the sorbate partial pressure in adsorption, Р а , is higher than in desorption, Р d [18][19][20][21]), it is necessary to have CSAMs with good kinetics of sorbate mass transfer in the course of operation and high resistance to mechanical and hydraulic loads. Furthermore, these parameters should not change appreciably in the course of CSAM operation in numerous sorption-desorption cycles.The goal of this study is preparation of CSAM based on zeolite and fl uorinated ethylene derivatives and evaluation of the mechanical properties of the material and of its ability to sorb water vapor. EXPERIMENTALAs starting adsorbing fi ller we chose NaX zeolite, and as organic matrix (binder), fl uorinated ethylene

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Section: Methodsmentioning

confidence: 99%