Vladimir I. Potkin, Sergey K. Petkevich, Alexander S. Lyakhov, Ludmila S. Ivashkevich.
Mononuclear heterocyclic rearrangement of 5-arylisoxazole-3-hydroxamic acids into 3,4-substituted 1,2,5-oxadiazoles
N.A.Bumagin, S.K.Petkevitch, A.V.Kletskov, M.V.Livantsov, N.E.Golantsov, V.I.Potkin
Isoxazol-3-yl(isothiazol-3-yl)-1,2,4-triazoles, -tetrazoles, and -1,3,4-oxadiazoles: synthesis, palladium complexes, and catalytic applications
Yu.G. Yegiazarov, M.F. Gorbatsevich, Ye.N. Yermolenko, L.L. Potapova, A.Yu. Volodin, B.Kh. Cherches, A.A. Shunkevich, V.V. Korotkevich
Effect of the Distribution of Palladium over the Cross Section of an Ion-Exchanger Fiber on Catalyst Activity in a Water Deoxygenation Process
Якимович Н.Н., к.т.н., Якимович И.В., Шункевич А.А., Лещик А.В., Шипат А.А., Кусин Р.А., к.т.н., Черняк И.Н.
ИЗУЧЕНИЕ ВЛИЯНИЯ ФИЗИКО-ХИМИЧЕСКИХ ПАРАМЕТРОВ НА БИОСИНТЕЗ КОРМОВОГО БЕЛКА ПРИ ПЕРЕРАБОТКЕ МОЛОЧНОЙ СЫВОРОТКИ
В.Э.Найдёнов, О.М.Бондарева, А.Н.Книжникова, В.Л.Соколов, Д.В.Лопатик
|FIBAN X-1||FIBAN K-1||FIBAN K-4||FIBAN К-1-1|
|FIBAN A-6||FIBAN АК-22В||FIBAN S|
|PROTECTIVE CLOTHING||FIBAN А-1||FIBAN AK-22|
thermal and osmotic stability
The material resist the action of aggressive media and temperature in the conditions, corresponding to the usual standarts for granular ion-exchange materials with analogous functional groups. Osmotic stability is exceptionally high: multiple cycling in acid-alcali alternative treatment and drying-moistening is possible.Advantages com-pared to granular ion exchangers and sorbents
Exceptionally high speed of ion exchange, sorption and cata-lytic processes. Typical time of a half ion-exchange process with fibers FIBAN is 2 - 10 seconds, while that with indus-trial ion-exchangers is 30 - 200 seconds (Fig. 2). High speed of the process is achieved due to a short diffusion track of the absorbable ion in the ion-exchange fiber. In this case resistance of the filtering layer can be controlled by the density of its filling and hold on the level of that for the industrial granular ion exchangers. Due to a high speed of processes, ion exchangers FIBAN can be applied in the form of thin filtering layers (7 - 20 mm) with a high speed of the solutions (40 cm/min) or gases (12 m/min) flow.
Fig.2. A comparison of degree of ion exchange Cl-SO422-
on strong base anion exchangers:
fibrous: FIBAN A-1 ( the half-time of the exchange t0.5 = 2 s);
granular: Amberlite IRA 458 (t0.5 = 26 s) and Kastel A 102 (t0.5 = 56 s) with the dispersity 20 - 30 mesh, from 1.8 N solution of Na2SO4, pH = 3, t = 25°C under conditions of intensive stirring of the resin suspension in the solution.
Chemically active textile materials are not designed for using in usual ion exchange columns or catalytic reactors. The reactors with thin layers and developed surface of the filtering material are required for their application.Nomenclature
The letters "A" and "K" after the word FIBAN mean presence of anion exchange or cation exchange groups. If the both letters are used, it means presence of the both types of the groups in macroscopic quantities.
© 2009 INSTITUTE OF PHYSICAL ORGANIC CHEMISTRY OF NASB
|Development and optimization ConstFlash|