Powiadomienia systemowe
- Sesja wygasła!
- Sesja wygasła!
- Sesja wygasła!
Tytuł artykułu
Autorzy
Identyfikatory
Warianty tytułu
Konferencja
"New Carbon Materials" / sympozjum (1; 1999: Ustroń-Jaszowiec, Poland)
Języki publikacji
Abstrakty
Molecular acoustics methods were applied to investigations of monolithic and powdered carbon materials, e.g., to monolithic adsorbent carbon supports (compressed expanded graphite) and powdered bituminous coals. The clear dependencies of ultrasonic velocity and dynamic elastic modulus vs. porosity for compressed expanded graphite were found. It seems that the porosity dependence of dynamic elastic modulus can be used for determination of porosity. Contrary to usually used methods (mercury porosi-metry, BET, etc.), elasticity properties measurements take into account not only open but also closed pores. It was found for bituminous coals that the expression of log (density/velocity) can be interpreted as proportional to mean molecular weight of portion between cross-links and may be used for relative estimation of cross-linking in coal. Our results give evidence that molecular acoustics methods (ultrasounds) can be very useful in the studies of properties of carbon materials in both monolithic and powdered form.
Czasopismo
Rocznik
Tom
Strony
127--138
Opis fizyczny
Bibliogr. 25 poz.
Twórcy
autor
- Polish Academy of Sciences, Institute of Coal Chemistry, 44-121 Gliwice, Sowińskiego 5, Poland, Fax: +(48 32) 231 28 31
Bibliografia
- [1] V.F. NOZDRIEV, Molekularnaya Akustika, Vysshaya Shkola Press, Moscow 1974 (in Russian), p. 10 and Chapter IV. See also Nozdriev VF., The Use of Ultrasonics in Molecular Physics, MacMillan. New York 1965.
- [2] M. KRZESIŃSKA. Fuel, 77,649 (1998).
- [3] M. KRZESIŃSKA, Fuel, 79, 1907 (2000).
- [4] A. ŚLIWIŃSKI, Ultrasounds and Their Applications, WNT, Warsaw 1993 (in Polish), p.32.
- [5] R. TRUELL, C. ELBAUM and B. CHICK, Ultrasonic Methods in Solid State Physics, Academic Press, London 1969, Chapter 2.
- [6] I. PEREPECHKO, Acoustic methods of investigating polymers (translated from the Russian), Mir Publishers, Moscow 1975, pp.14-18.
- [7] R.S. STEIN and G.L. WILKES, Structure and Properties of Oriented Polymers, Ed. I. M. Ward, Appl. Sci. Publishers Ltd., London 1975, p.136.
- [8] J.F. BYRNE and H. MARCH, Porosity in Carbons: Characterization and Applications, Ed. J.W. Patrick, Edward Arnold, London 1995, Chapter 1.
- [9] D.W. van KREVELEN, COAL Typology-Physics-Chemistry-Constitution, Elsevier, Amsterdam 1993, p.570.
- [10] P.G. CZEREMSKOY, W.W. SLEZOV and W.l. BETECHTIN, Pores in Solids, Energoatomizdat, Moscow 1990, (in Russian), pp.306-313.
- [11] R.M. SPRIGGS, J. Amer. Ceram. Soc., 44, 628(1961).
- [12] J.C. WANC, J. Mater. Sci.,19, 801 (1984).
- [13] K.K. PHANI and S.K. NIYOGI, J. Mater. Sci.,22, 257(1987).
- [14] J. BERDOWSKI and M. KRZESIŃSKA, Proc. French-Polish Conf. GDRE, Carbon Chemistry: Functionalized Carbon Materials, Zakopane, Sept. 1997, Ed. CNRS-PAS (University of H. Poincare - ICC PAS.Nancy - Gliwice, 1997) p.100.
- [15] J. BERDOWSKI and M. KRZESIŃSKA, Proc. Conf. GDRE Materiaux* Carbones Fonctionnalises a Porosile Conlrolee, Zakopane, Sept. 1998, Ed. CNRS-PAS (University of H. Poincare - ICC PAS, Nancy -Gliwice, 1998)p.94.
- [16] S. Pusz, G. NAKONIECZNA, M. KRZESIŃSKA and K. WANAT, Karbo-Energochem.-Ekol., 39, 3 (1994).
- [17] M. KRZESIŃSKA, Appl. Acoust, 55, 329 (1998).
- [18] R.J. URICK, J. Appl. Phys., 18, 983(1947).
- [19] M. KRZESIŃSKA, J. PAJĄK, N. OCER, A. CEI.ZAHD, J.F. MARECHE and S. PURICELLI, Proc. Int. Conf. GDRE. Functionalized Carbon Materials with Controlled Porosity, Zakopane, Sept. 1999 Ed. CNRS-PAS (ICC PAS, Gliwice) p. 60.
- [20] M. KRZESIŃSKA, Energy Fuels, 11, 686 (1997).
- [21] M. KRZESIŃSKA, Int. J. Rock Mech. Min. Sci., 34, 167 (1997).
- [22] M. KRZESIŃSKA and S. Pusz, Proc. ICCS'97, Ed. A. Ziegler, DGMK Tagungsberichte, vol. 1 1465 (1997).
- [23] D.A. PINNOV, IEEE J. Quantum Electronics, QE-6, 223 (1970).
- [24] T. GREEN, J. KOVAC, D. BRENNER and J.W. LARSEN, Coal Structure, Ed. R.A. Meyers, Academic Press, New York, 1982, pp. 199-282.
- [25] M. KRZESIŃSKA, Koks, Smoła, Gaz, 11-12, 260 (1987)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPP1-0021-0098