Effect of the Composition and Conditions of the Synthesis of Porous Glass on Their Micro- and Mesoporous Structuresстатья

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Дата последнего поиска статьи во внешних источниках: 5 декабря 2014 г.

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[1] Kreisberg V. A., Antropova T. V., Kalinina S. V. Effect of the composition and conditions of the synthesis of porous glass on their micro- and mesoporous structures // Glass Physics and Chemistry. — 2014. — Vol. 40, no. 5. — P. 501–512. Micro- and mesoporous substructures of porous glass (PG) obtained from two-phase alkali-borosilicate glass of various compositions as the result of their through acidic dealkalization under various conditions have been studied using equilibrium and kinetic adsorption and desorption methods. It has been determined that all the studied PG samples are intrinsic for multimodal mesopore size distribution (up to four modes) and micropores (up to three modes). The effective diameters of the mesopores vary from 3 to 60 nm. The diameters of micropores vary within small ranges from 0.5 to 0.7 nm. It has been stated that micropores in PG mainly represent the ranges of the interglobular contacts of secondary silica with sizes of 1–2 diameters of the adsorbate molecule. It has been shown that varying the composition of the initial alkali-borosilicate glass by the additions of doping elements (lead, aluminum, fluorine, and phosphorus) and changing the temperature conditions of liquation, one can modify the parameters of the morphology of the pores and ratio between mesoporous and microporous substructures of PG in broad ranges. [ DOI ]

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