Abstract
DSC and TG-DTA techniques were used to investigate micro-sized silver powder particles and the adsorption of ethyl cellulose on these particles in a solution of ethyl acetate. The apparent specific heat of the silver particles was determined, and the kinetics of temperature-programmed desorption (TPD) of these adsorbed silver particles was investigated. Results show that the apparent specific heat and desorption kinetic parameters obtained by thermal analysis techniques could be used to characterize certain physico-chemical properties of such a particulate system.
Zusammenfassung
Mittels DSC und TG-DTA wurden Mikro-Silberstaubpartikel und die Adsorption von Ethylcellulose an diesen Partikeln in Ethylacetatlösung untersucht. Es wurde die scheinbare spezifische Wärme der Silberpartikel ermittelt und die Kinetik der temperaturpro-grammierten Desorption (TPD) dieser adsorbierten Silberpartikel untersucht. Die Resultate erweisen, daß die mittels Thermoanalyse ermittelten scheinbaren spezifischen Wärmewerte und Desorptionskinetikparemeter zur Charakterisierung bestimmter physikalisch-chemischer Eigenschaften solcher Partikelsysteme geeignet sind.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
‘Handbook of Chemical engineering’ Particle and particulate system. Chapters 19.1≈19.4, Chem. Engin. Pub. Press, Beijing, 1989, p. 19, 37 (in Chinese).
S. J. Gregg, Adsorption of gases-Tool for the study of the texture of solids. In ‘Adsorption at the Gas-Solid and Liquid-Solid Interface’ (Rouguerol, J. et al. eds.) Elsevier Sci. Pub Co., Amsterdam 1982, p. 153.
J. Bonard, Adsorption on metal surfaces—an integrated approach (Studied in Surface Science and Catalysis 13) Chapter 7, Elsevier Sci. Pub. Co., Amsterdam 1983, p. 177.
S. J. Gregg and K. S. W. Sing, Adsorption surface area and porosity, Chapter 6, Academic Press Inc. Ltd., London 1982, p. 283.
G. Y. Cheng, C.-Y. Tao and S.-J. Pang, A new method for fractal dimension determination and calculation of solid surface, in ‘Fractal Theory and its Application’ (G.-Y. Cheng et al. eds.), SiChuan University Press, Chengdu 1989, p. 35 (in Chinese).
J. R. Anderson and K. C. Pratt, Introduction to characterization and testing of catalysts, Chapter 5, Academic Press, Australia 1985, p. 168.
R. Sh. Mikhail and E. Robens, Microstructure and Thermal Analysis of Solid Surface, Part 3, John Wiley & Sons., Chichester 1983, p. 281.
A. Heller and C. Fishcer, J. Thermal Anal, 36 (1990) 1063.
J.-C. Fu, F.-B. Tan, D.-J. Zeng and L.-W. Tan, Precious Metals, 2 (1991) 11 (in Chinese).
D.-J. Jia, ‘A study of the shape for the precious metals powder by an electronmicroscope’, Inst. Precious Metals, Kunming, 1991, p. 4, (in Chinese).
S.-L. Li and S.-M. Yu, ‘A briefing of the surveying powder sample by TEM,’ Inst. Precious Metals, Kunming, 1981, p. 3. (in Chinese).
X. Liu, ‘Fundamentals of Thermal Analysis Technique’ Vol. 2, Chapter 9, Inst. Precious Metals, Kunming, 1985, p. 272 (in Chinese).
Y. Cheng and X. Liu, Precious Metals, 14 (1993) 16 (in Chinese).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Liu, X., Tan, F.B., Cheng, Y. et al. A study of surface adsorption on silver powders. Journal of Thermal Analysis 44, 1121–1129 (1995). https://doi.org/10.1007/BF02547541
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02547541