Abstract
LTA zeolite can be prepared from dry mixes in a vibratory mill with an impact-shear loading conditions. For the synthesis of LTA zeolite, it is necessary to use the anhydrous ingredients (Al2Si2O7–metakaolin, γ-Al2O3). The process of synthesis is controlled by X-ray diffraction, IR-spectroscopy, and atomic-force microscopy. The presence of structural water in the initial ingredients (Al2Si2(OH)4–kaolin or Al(OH)3) leads to the formation of feldshpatoids (nepheline, sodalite). It was established that the process of mechanical activation requires the synthesis of sodium aluminate of cubic and/or tetragonal crystal systems with a lattice parameters close to those for LTA zeolite. These sodium aluminate acts as a steric template for an “assembly” of the zeolite. The presence of sodium aluminate with some other crystal structure results in the formation of sodalite. There is an optimal time of mechanochemical activation, which is determined by the synthesis of sodium aluminate with cubic or tetragonal crystal structure. A model of the mechanochemical synthesis of LTA zeolite was proposed.
Similar content being viewed by others
Notes
In mixture for the reaction (IV) was introduced into the Al2O3 excess over the stoichiometry the synthesis of LTA zeolite, namely, 50 mol%.
References
Breck D (1974) Zeolite molecular sieves. Structure, chemistry and use. Wiley, New York
Anthony JL, Davis ME (2006) In: Adachi M, Lockwood DJ (eds) Self-organized nanoscale materials. Springer Science, New York, p 159. doi:10.1007/0-387-27976-8_4
Reinert P, Marler B, Patarin J (2000) J Mater Sci 35(12):2965. doi:10.1023/A:1004726710097
Chandrasekhar S, Pramada PN (1999) J Porous Mater 6:283. doi:10.1023/A:1009632606671
Pavlov ML, Travkina OS, Basimova RA, Pavlova IN, Kutepov BI (2009) Pet Chem 49(1):4. doi:10.1134/S0965544109010071
Davis ME (1995) Stud Surf Sci Catal 97:35. doi:10.1016/S0167-2991(06)81870-7
Avvakumov E, Senna M, Kosova N (2002) Soft mechanochemical synthesis: a basis for new chemical technologies. Kluwer Academic Publishers, New York
Baláž P (2008) Mechanochemistry in nanoscience and minerals engineering. Springer-Verlag, Berlin
Gordina NE, Prokof’ev VYu, Il’in AP (2003) Rus J Appl Chem 76(4):661. doi:10.1023/A:1025772111644
Leshchev NV, Prokof’ev VYu, Gordina NE (2010) Izv Vyssh Uchebn Zaved, Khim Khim Tekhnol 53(11):81 (Rus)
Heegn H (1989) Aufbereitungs-Technik 30:635
Delogu F, Deidda C, Mulas G, Schiffini L, Cocco G (2004) J Mater Sci 39(16–17):5121. doi:10.1023/B:JMSC.0000039194.07422.be
Gordina NE, Prokof’ev VYu, Il’in AP (2005) Glass Ceram 62(9–10):282. doi:10.1007/s10717-005-0092-3
Prokof’ev VYu (2010) Glass Ceram 67(3–4):118. doi:10.1007/s10717-010-9241-4
Zhidkova AB, Prokof’ev VYu, Gordina NE (2010) Izv Vyssh Uchebn Zaved, Khim Khim Tekhnol 53(12):127 (Rus)
Reed TB, Breck DW (1956) J Am Chem Soc 78(23):5972. doi:10.1021/ja01604a002
Delprato F, Delmotte L, Guth JL, Huve L (1990) Zeolites 10(6):546. doi:10.1016/S0144-2449(05)80310-0
Baerlocher Ch, McCusker LB, Chiappetta R (1994) Micropor Mater 2(4):269. doi:10.1016/0927-6513(93)E0062-L
Prokofiev VYu, Gordina NE, Zhidkova AB (2011) Izv Vyssh Uchebn Zaved, Khim Khim Tekhnol 54(12):77 (Rus)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Prokof’ev, V.Y., Gordina, N.E., Zhidkova, A.B. et al. Mechanochemical synthesis of granulated LTA zeolite from metakaolin. J Mater Sci 47, 5385–5392 (2012). https://doi.org/10.1007/s10853-012-6421-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-012-6421-3