Warianty tytułu
Języki publikacji
Abstrakty
Synthesis and characterization of new multimodal porous systems containing thin MFI zeolitic films is reported. These films cover the internal surface of the meso- and macroporous silica-alumina monoliths. They are easily accessible through the open porous structure retained in the partially recrystallized, originally amorphous monolith. When the mesoporous Al-SBA-15 sieves are used in stead of monoliths, a controlled hydrothermal process results in the formation of the MFI nanodomains dispersed in the walls that separate mesopores hexagonally arranged. These do mains possess strong acidic sites of the zeolitic type, but the original ordering of mesopores in the parent material is very well retained. A simple method for the synthesis of the MFI crystals containing both meso- and macrovoids is also proposed. It makes use of the suspended mono- and polydispersed carbon particles that serve as porogens. Thus, the porous MFI crystals obtained can be used for the preparation of effective bifunctional catalysts by the de position of a highly dispersed metallic (Pd) phase.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
1801-1808
Opis fizyczny
Bibliogr. 21 poz., rys.
Twórcy
autor
autor
autor
autor
autor
- Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland, ncderewi@cyf-kr.edu.pl
Bibliografia
- 1. Broclawik E., Datka J., Gil B. and Kozyra R, Topics in Catal, 75, 353 (2002).
- 2. Datka J., Broclawik E., Kozyra R, Kukulska-Zając E., Bartula D. and Szutiak M., Stud. Surf. Sci. Catal, 154,2151(2004).
- 3. Datka J., Kozyra R, Kukulska-Zając E. and Kobyzewa W., Catal. Today, 101, 117 (2005).
- 4. Kukulska-Zając E., Kozyra R and Datka J., Appl. Catal. A, 307, 46 (2006).
- 5. Broclawik E., Kozyra P. and Datka J., C. R. Chim., 8, 491 (2005).
- 6. Mitoraj M. and Michalak A., J. Mol. Model., 13(2), 347 (2006).
- 7. Mitoraj M. and Michalak A., Organometallics, 26, 6576 (2007).
- 8. Te Velde G., Bickelhaupt F.M., Baerends E. J., Fonseca Guerra C., Van Gisbergen S.J.A., Snijders J.G. and Ziegler T., J. Comput. Chem., 22, 931 (2001), and refs therein.
- 9. Baerends E.J., Ellis D.E. and Ros R, Chem. Phys., 2, 41 (1973).
- 10. Baerends EJ. and Ros R, Chem. Phys., 2, 52 (1973).
- 11. Te Velde G. and Baerends E .J., J. Comput. Phys., 99, 84 (1992).
- 12. Fonseca C.G., Visser O., Snijders J.G., Te Velde G. and Baerends E. J., Methods and Techniques in Computational Chemistry, METECC-95; Clementi E., Corongiu G., Eds.; STEF; Cagliari, Italy; 305 (1995).
- 13. Nachtigallova D., Nachtigall R, Sierka M. and Sauer J., Phys. Chem. Chem. Phys., l, 2019 (1999).
- 14. Becke A.D., Phys. Rev. A, 38, 3098 (1988).
- 15. Perdew J.P., Phys. Rev. B, 33(12), 8822 (1986).
- 16. Delley B., J. Chem. Phys., 92, 508 (1990
- 17. Mrozek J., Nalewajski R.F. and Michalak A., Polish J. Chem., 72,1779 (1998).
- 18. HirshfeId F.L., Theor. Chim. Acta B, 44,129 (1977).
- 19. Kukulska-Zając E. and Datka J., Micropor Mesopor. Mater., 109,49 (2008).
- 20. Kukulska-Zając E., PhD Thesis (Faculty of Chemistry, Jagiellonian University, 2006).
- 21. Dźwigaj I., MSc Thesis (Faculty of Chemistry, Jagiellonian University, 2006).
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ5-0022-0137