Calculation of the adsorption equilibrium parameters of inert gases and their binary mixtures on zeolite NaX |
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| Authors: | L A Vashchenko V V Katal'nikova V V Serpinskii |
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| Institution: | 1. Physical-Technical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar'kov
2. Institute of Physical Chemistry, Academy of Sciences of the USSR, Moscow
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| Abstract: | | 1. |
The adsorption isotherms of krypton, xenon, and nitrogen in the 140–270K temperature range and the 0.3 Pa-65 kPa pressure range were calculated with the equations from a quasi-chemical model of adsorption.
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The phase diagrams of krypton-xenon adsorption solutions for 170 and 220 K were plotted for a binary mixture of gases. The limit of applicability of the given model was substantiated, and its drawbacks were noted.Fig. 1. Adsoprtion isotherms of Kr, Xe (a) and N2 (b) at T, K: 1) 170, 2) 220, 3) 235,4) 160. Points: experimental; lines: calculated.Fig. 2. Diagrams of equilibrium adsorption solutions of Kr-Xe for T, K: a) 170, b) 220, and with Ptot, kPa: 1) 20, 2) 14, 3) 50, CXe(Kr): adsorption, atoms/cavity. Points: experimental: lines: calculated.
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The equations of the quasichemical model can be successfully used in engineering calculations of adsorption systems with properties similar to the Kr-Xe-NaX system in the range of degrees of filling of 0.01   1  0.50 and 0.10 2 0.70.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 515–519, March, 1989. |
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