METHOD FOR CALCULATION OF SPECIFIC SURFACE OF MICROPOROUS AND MICROMESOPOROUS ADSORBENTS
Abstract
Essentially new method of definition of specific surface of micropores of micromesoporous adsorbents based on determination of side surface of a pore which is blocked by adsorbate molecules placed in her cross-section is proposed. Justification of the method is carried out and an opportunity of its practical application at estimation of a specific surface of the porous bodies containing micropores is shown. Limitation of the BET methods for definition of a specific surface of microporous and micromesoporous materials is shown. It is emphasized, that applicability of the BET method for analysis of adsorption processes is restricted by the relative adsorbates pressure of 0.05–0.35.
About the Authors
V. S. Komarov
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Academician, D. Sc. (Chemistry), Professor, Leading Researcher.
Belarus
Academician, D. Sc. (Chemistry), Professor, Leading Researcher.
V. V. Vashuk
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
D. Sc. (Chemistry), Head of Laboratory of magnesium compounds.
Belarus
D. Sc. (Chemistry), Head of Laboratory of magnesium compounds.
References
1. Komarov, V. S. (2016) «Method for determination of micropores' surface», Vestsi NAN Belarusi. Seryya khimіchnykh navuk [Proceedings of the National Academy of Sciences of Belarus. Chemistry Series], no. 1, p. 18.
2. Komarov, V. S. (2016) «Determination of the specific surface by nitrogen adsorption and comparing it with the geometric surface of the solid», Vestsi NAN Belarusi. Seryya khimіchnykh navuk [Proceedings of the National Academy of Sciences of Belarus. Chemistry Series], no. 1, pp. 23–25.
3. Dubinin, M. M. (1972) Adsorbtsiya i poristost' [Adsorption and porosity], Moscow, RU
4. Kiselev, A. V. (1958) «Corpuscular structure of gel adsorbents», Metody issledovaniya struktury vysokodispersnykh i poristykh tel [Methods of studying the structure and highly porous bodies], Izdatel'stvo AN SSSR, Moscow, RU, pp. 47–59.
5. Komarov, V. S. (2015) «Synthesis of mesoporous silica gels and determination of their specific surface», Vestsi NAN Belarusi. Seryya khimіchnykh navuk [Proceedings of the National Academy of Sciences of Belarus. Chemistry Series], no. 3, pp. 17–21.
6. Okkerse, C. (1961) «Submicroporous and Macroporous Silica», Abstract of Ph.D. dissertation, Technical University, Delft, Netherlands
7. Romannikov, V. N., Fenelonov, V. B., Nosov, A. V. and Derevyankin, A.Yu. (2010) «On the mechanism of silicate porous mesophase formation», Kinetika i kataliz [Kinetics and Catalysis], vol. 41, no. 1, pp. 122–130.
8. Hao, N., Tang, F. and Li, L. (2015) «MCM-41 mesoporous silica sheet with ordered perpendicular nanochannels for protein delivery and the assembly of Ag nanoparticles in catalytic applications», Microporous and Mesoporous Materials, vol. 218, pp. 223–227.
9. Trong On, D., Desplantier-Giscard, D., Danumah, C. and Kaliaguine, S. (2003) «Perspectives in catalytic applications of mesostructured materials», Applied Catalysis A: General, vol. 253, no. 2, pp. 545–602.
10. Lysenko, N. D., Shvets, A. V., Yaremov, P. S. and Il’in, V. G. (2008) «Effect of the conditions of the matrix carbonization of sucrose on the structure and adsorption properties of mesoporous carbon materials», Theoretical and Experimental Chemistry, vol. 44, no. 6, pp. 374–379.
Review
Views:
871
Email this article 