![]() ![]() In this paper we present a theoretical analysis of sorption kinetics in zeolite crystals which are assumed to consist of transport channels and capacity channels. Therefore, it is possible that the surface barrier effect observed in zeolites and carbon molecular sieves is governed by highly localized (single atomic layer) structural details. Perhaps the most important observation is that when the pore size approaches the kinetic diameter of the gas molecules, changes of a few percent in the pore size cause order-of-magnitude changes in the resistance. Thermal vibrations of the adsorbent atoms have little effect on the adsorption/surface diffusion mechanisms but cause fluctuations in the effective pore mouth area which can significantly affect transport rates. Adsorption followed by surface diffusion to the pore mouth makes a significant contribution to the mass transfer when the temperature is low or, equivalently, when the adsorptive potential is strong. The effects of temperature, pore size, and thermal motion of the adsorbent atoms are studied for a slit pore mouth model. ![]() The mass transfer resistance associated with penetrating the mouth of a very small pore is evaluted using classical molecular dynamics simulation techniques. The equilibrium concentration of o-xylene at P/P0 = 0.1 was only 0.38-0.68 mol/unit cell, while that of p-xylene was 4.40-5.98 mol/unit cell. Values for the effective diffusivities decreased from 2.6 × 10-12 m2/s for the H-form to 2.0-2.3 × 10-12 m2/s for the modified forms. The sorption isotherms for o-xylene showed some unusual steps. 1.7 × 10-11 m2/s, irrespective of whether the H-form or the modified forms were investigated. The rate of sorption of p-xylene on all the samples investigated followed Fick's second law of diffusion, leading to an effective diffusivity of ca. The BET specific surface area decreased from 358 m2/g to 35-90 m2/g mainly because of a decrease in micropore volume as determined by the t-plot method. The diffusivities of the samples were measured using a new flow gravimetric method involving the sorption of p- and o-xylenes. The sorption properties of samples of H-ZSM-5 zeolite and their forms modified with P, B and Mg were determined by the physical adsorption of nitrogen and evaluated by BET isotherm and t-plot methods. Tlmace bordering the villages(towns): Batovce | Beladice | Bohunice | Bory | Brhlovce | Cajkov | Cankov | Caradice | Cerveny Hradok | Choca | Chrastany | Chyndice | Chyzerovce | Cierne Klacany | Cifare | Devicany | Dolne Brhlovce | Dolne Devicany | Dolne Slazany | Dolne Zemberovce | Dolny Dur | Drzenice | Dycka | Gondovo | Horna Sec | Horne Brhlovce | Horne Devicany | Horne Zemberovce | Horny Dur | Horny Ohaj | Horsa | Hronske Klacany | Hronske Kosihy | Hronsky Benadik | Jalaksova | Kalinciakovo | Kalna | Kalna nad Hronom | Kalnica | Kmetovce | Kozarovce | Krskany | Levice | Lok | Lucnica nad Zitavou | Lula | Male Chrastany | Male Kozmalovce | Male Krskany | Male Vozokany | Maly Kiar | Martinova | Marusova | Melek | Mlynany | Mochovce | Nemcinany | Nevidzany | Nova Dedina | Nova Ves nad Zitavou | Nove Vozokany | Nove Vozokany | Nove Vozokany | Novy Tekov | Opatova | Orovnica | Podluzany | Prilepy | Psiare | Pukanec | Pusty Chotar | Rohoznica | Rohoznica | Rybnik | Sarovce | Slazany | Slepcany | Stary Tekov | Svaty Kriz | Tajna | Tehla | Tekovska Breznica | Tekovska Nova Ves | Tekovske Nemce | Telince | Tesare nad Zitavou | Tesarske Mlynany | Vajka nad Zitavou | Velke Chrastany | Velke Chyndice | Velke Kozmalovce | Velke Krskany | Velke Vozokany | Velky Dur | Vieska nad Zitavou | Volkovce | Vrable | Zavada | Zemberovce | Zitavany | Zitavce | Zlate Moravce above surnames continue below the google map Note: all below surnames are listed by slovak, english and hungarian spellingīalog Balog Balog Balogová Balogova Balogova Barančok Barancok Barancsok Bátovská Batovska Batovszka Betin Betin Betin Betinová Betinova Betinova Bobáková Bobakova Bobakova Brumlovská Brumlovska Brumlovszka Brumlovský Brumlovsky Brumlovszky Červenák Cervenak Cservenak Červenáková Cervenakova Cservenakova Depeš Depes Depes Gregor Gregor Gregor Guničová Gunicova Gunicsova Havran Havran Havran Havranová Havranova Havranova Herc Herc Hercz Hercová Hercova Herczova Horváth SURNAMES in 2005 (the first 100 most common surnames of the village(town)): POPULATION of Tlmace in 2005: 4226 inhabitants
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