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Title: Addressing spreading pressure dependence of real adsorbed solution theory with generalized Langmuir isotherm

Journal Article · · Adsorption
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Texas Tech University, Lubbock, TX (United States)
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This work addresses spreading pressure dependence of Real Adsorbed Solution Theory (RAST) for mixed-gas adsorption equilibria using generalized Langmuir (gL) isotherm. Considering vacant sites as an integral part of competitive multicomponent adsorption on a constant adsorbent surface area, the gL isotherm properly accounts for surface heterogeneity and loading, adsorbate composition, and temperature dependence. We show the spreading pressure dependence of adsorbate activity coefficient expression in the RAST framework can be generated from the gL isotherm. The procedure is illustrated with a spreading pressure dependent adsorption Nonrandom Furthermore, two-Liquid activity coefficient model, and the results are validated for ten binary mixed-gas adsorption equilibria systems including two highly nonideal azeotropic systems.

Research Organization:
RAPID Manufacturing Institute, New York, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0007888
OSTI ID:
2222463
Journal Information:
Adsorption, Vol. 29, Issue 7-8; ISSN 0929-5607
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (11)

Figure 1(p. 25)figure Figure 1
Figure 2(p. 26)figure Figure 2
Figure 3(p. 27)figure Figure 3
Figure 4(p. 28)figure Figure 4
Table 1(p. 29)table Table 1
Table S1(p. 31)table Table S1
Table S2(p. 32)table Table S2
Figure S1(p. 33)figure Figure S1
Figure S2(p. 34)figure Figure S2
Figure S3(p. 35)figure Figure S3
Figure S4(p. 36)figure Figure S4

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42 ENGINEERING
adsorption Nonrandom Two-Liquid model
generalized Langmuir isotherm
mixed-gas adsorption equilibria
real adsorbed solution theory
spreading pressure dependence