Powiadomienia systemowe
- Sesja wygasła!
Tytuł artykułu
Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
The comparative study of iron-aluminum binary oxides Fe2-xAlxO3 (where x = 2/3, 1, 4/3) reduction behavior was investigated and the obtained bi-oxides were characterzed by TPR, TG-DTA, BET and XRD methods. In hydrogen atmosphere three step reduction path way for iron-aluminum binary oxide was found. Such reduction behavior appeared reasonably analogical to that characteristic of hematite type iron(III) oxide reduction 3Fe2O3 rightwards arrow 2Fe3O4 rightwards arrow 6FeO rightwards arrow 6Fe. The reduction for unimolar bi-oxide Fe2-xAlxO3 (x = 1) can be expressed in following way: 4FeAlO3 rightwards arrow 2Fe2AlO4 rightwards arrow 2FeAl2O4 + 2Fe rightwards arrow 4Fe but the last step of reduction was not accomplished below 1000°C. In air FeAlO3 bi-oxide decomposes above 1300°C, whereas exothermal dissociation 2FeAlO3 rightwards arrow alfa-Al2O3 and alfa-Fe2O3 above 770°C was con firmed in argon atmosphere.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Strony
2153--2162
Opis fizyczny
Bibliogr. 20 poz., rys.
Twórcy
autor
autor
autor
autor
autor
- Technical University of Lodz, Institute of General and Ecological Chemistry, 90-924 Łódź, Żeromskiego 116, Poland, mierczyn25@wp.pl
Bibliografia
- 1. Józwiak W.K., Maniecki T.P., Basińska A., Góralski J. and Fiedorów R., Kinet. Catal, 6, 879 (2004).
- 2. Maniecki TP., Mierczyński P., Maniukiewicz W., Gebauer D. and Józwiak W.K., Kinet. Catal, 2, 228 (2009).
- 3. Sonneveld E.J. and Visser J.W., J. Appl. Cryst., 8, 1 (1975).
- 4. Savitsky A. and Golay M.J.E., Anal. Chem., 36(8), 1627 (1964).
- 5. X'Pert HighScore Plus, ver. 2.1 PANalytical B.V. 2004.
- 6. Schwertmann U. and Corneklk R.M., Iron Oxides in the Laboratory, WILEY-VCH Verlag GmbH, D-69469 Weinheim (Federal Republic of Germany), 2000.
- 7. Paesano Jr. A., Matsuda C.K., da Cunha J.B.M., Vasconcellos M.A.Z., Hallouche B. and Silva S.L., J. Magn. Magn. Mater., 264, 264 (2003).
- 8. Bukur D.B., Okabe K., Rosynek M.P., Wang Ch., Li D., Rao K.R.P.M. and Huffman G.P., J. Catal, 155, 353 (1995).
- 9. Wan Hai-Jun, Wu Bao-Shan, Zhang Cheng-Hua, Li Hong-Yong-Wang, Xu Bin-Fu and Yi Fan, Catal. Commun., 8, 1538(2007).
- 10. Józwiak W.K., Kaczmarek E., Maniecki TP., Ignaczak W. and Maniukiewicz W., Appl. Catal. A: General, 326, 17(2007).
- 11. Edstrom J.O., J. Iron Steel Inst., 175, 289 (1953).
- 12. Decyk P., Trejda M., Ziolek M., Kujawa J., Głaszczka K, Bettahar M., Monteverdi S. and Mercy M., J. Catal.,219, 146(2003).
- 13. Coq B., Mauvezin M., Delahay G. and Kieger S., J. Catal, 195, 298 (2000).
- 14. Topsøe H, Dumesic LA. and Boudart M., J. Catal, 28, 477 (1973).
- 15. Bukur D.B. and Sivaraj Ch., Appl. Catal. A: General, 231, 201 (2002).
- 16. Brown R, Cooper M.E. and Whan D.A., Appl. Catal, 3, 177 (1982).
- 17. Kock A.J., Fortuin H.M. and Geus J.W, J. Catal, 96, 261 (1985).
- 18. Hughes I.S.C., Newman J.O.H. and Bond G.C, Appl. Catal, 30, 303 (1987).
- 19. Józwiak W.K., Maniecki T.P. and Maniukiewicz W, Polish J. Environ. Studies, vol. 14, Supplement IV, 195 (2005).
- 20. Basińska A., Maniecki T.P. and Józwiak W.K., React. Kinet. Catal Lett., 89(2), 319 (2006).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ7-0016-0025