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Momentary Equilibrium in transient kinetics and its application for estimating the concentration of catalytic sites

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Marie Curie
Project
Methusalem
Abstract
We describe the novel concept of momentary equilibrium (ME), a special event during a pulse-response transient experiment in which the non-steady-state rates of adsorption and desorption of a probe molecule are instantaneously balanced. In the absence of other reactions, any system with reversible adsorption will always pass through ME during a pulse-response experiment with effusion. We also suggest a new method for measuring the concentration of adsorption sites on heterogeneous catalysts and the corresponding equilibrium constant by observing momentary equilibrium in thin-zone temporal analysis of products (TZTAP) pulse-response experiments with modulated pulse intensity. The suggested method employs reversible adsorption of probe molecules, contrary to traditional methods of counting adsorption sites which utilize irreversible reactions.
Keywords
TEMPORAL ANALYSIS, ZONE TAP-REACTOR, CO OXIDATION, PRODUCTS TAP, ALKANE DEHYDROGENATION, QUANTITATIVE-ANALYSIS, MULTIPULSE TAP, ADSORPTION, OXYGEN, PT/MG(GA)(AL)O

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Citation

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MLA
Redekop, Evgeniy, GS Yablonsky, Vladimir Galvita, et al. “Momentary Equilibrium in Transient Kinetics and Its Application for Estimating the Concentration of Catalytic Sites.” INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 52.44 (2013): 15417–15477. Print.
APA
Redekop, Evgeniy, Yablonsky, G., Galvita, V., Constales, D., Fushimi, R., Gleaves, J., & Marin, G. (2013). Momentary Equilibrium in transient kinetics and its application for estimating the concentration of catalytic sites. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 52(44), 15417–15477.
Chicago author-date
Redekop, Evgeniy, GS Yablonsky, Vladimir Galvita, Denis Constales, R Fushimi, JT Gleaves, and Guy Marin. 2013. “Momentary Equilibrium in Transient Kinetics and Its Application for Estimating the Concentration of Catalytic Sites.” Industrial & Engineering Chemistry Research 52 (44): 15417–15477.
Chicago author-date (all authors)
Redekop, Evgeniy, GS Yablonsky, Vladimir Galvita, Denis Constales, R Fushimi, JT Gleaves, and Guy Marin. 2013. “Momentary Equilibrium in Transient Kinetics and Its Application for Estimating the Concentration of Catalytic Sites.” Industrial & Engineering Chemistry Research 52 (44): 15417–15477.
Vancouver
1.
Redekop E, Yablonsky G, Galvita V, Constales D, Fushimi R, Gleaves J, et al. Momentary Equilibrium in transient kinetics and its application for estimating the concentration of catalytic sites. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH. 2013;52(44):15417–77.
IEEE
[1]
E. Redekop et al., “Momentary Equilibrium in transient kinetics and its application for estimating the concentration of catalytic sites,” INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 52, no. 44, pp. 15417–15477, 2013.
@article{4287472,
  abstract     = {We describe the novel concept of momentary equilibrium (ME), a special event during a pulse-response transient experiment in which the non-steady-state rates of adsorption and desorption of a probe molecule are instantaneously balanced. In the absence of other reactions, any system with reversible adsorption will always pass through ME during a pulse-response experiment with effusion. We also suggest a new method for measuring the concentration of adsorption sites on heterogeneous catalysts and the corresponding equilibrium constant by observing momentary equilibrium in thin-zone temporal analysis of products (TZTAP) pulse-response experiments with modulated pulse intensity. The suggested method employs reversible adsorption of probe molecules, contrary to traditional methods of counting adsorption sites which utilize irreversible reactions.},
  author       = {Redekop, Evgeniy and Yablonsky, GS and Galvita, Vladimir and Constales, Denis and Fushimi, R and Gleaves, JT and Marin, Guy},
  issn         = {0888-5885},
  journal      = {INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH},
  keywords     = {TEMPORAL ANALYSIS,ZONE TAP-REACTOR,CO OXIDATION,PRODUCTS TAP,ALKANE DEHYDROGENATION,QUANTITATIVE-ANALYSIS,MULTIPULSE TAP,ADSORPTION,OXYGEN,PT/MG(GA)(AL)O},
  language     = {eng},
  number       = {44},
  pages        = {15417--15477},
  title        = {Momentary Equilibrium in transient kinetics and its application for estimating the concentration of catalytic sites},
  url          = {http://dx.doi.org/10.1021/ie400677b},
  volume       = {52},
  year         = {2013},
}

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