The present invention relates to a process for preparing zeolites using quaternary ammonium cations having the following formula as structure directing agents: wherein: X is --H, methyl, --F, --Cl, --F and --Cl, or methoxy; R1and R2are each methyl or ethyl; R1and R2together are --(CH2)x-- where
The present invention relates to a process for preparing zeolites using quaternary ammonium cations having the following formula as structure directing agents: wherein: X is --H, methyl, --F, --Cl, --F and --Cl, or methoxy; R1and R2are each methyl or ethyl; R1and R2together are --(CH2)x-- where x is 2, 3, 4, or 5; or R1and R2together are methylated or dimethylated --(CH2)y-- where y is 3, 4, or 5; and R3,R4and R5are each methyl or ethyl, or one of R3,R4or R5is methyl and the other two together are --(CH2)z-- where z is 4, 5, 6 or 7;.
대표청구항▼
The present invention relates to a process for preparing zeolites using quaternary ammonium cations having the following formula as structure directing agents: wherein: X is --H, methyl, --F, --Cl, --F and --Cl, or methoxy; R1and R2are each methyl or ethyl; R1and R2together are --(CH2)x-- where
The present invention relates to a process for preparing zeolites using quaternary ammonium cations having the following formula as structure directing agents: wherein: X is --H, methyl, --F, --Cl, --F and --Cl, or methoxy; R1and R2are each methyl or ethyl; R1and R2together are --(CH2)x-- where x is 2, 3, 4, or 5; or R1and R2together are methylated or dimethylated --(CH2)y-- where y is 3, 4, or 5; and R3,R4and R5are each methyl or ethyl, or one of R3,R4or R5is methyl and the other two together are --(CH2)z-- where z is 4, 5, 6 or 7;. l 424-427 91990). Yoko T, Kamiya K, Kanaka K., "Preparation of multiple oxide BaTi03fibers by the sol-gel method," 25 J Mat Sci 3922-3929 (1990). Katayama S, Sekine M., "Fabrication of superconducting YBa2Cu307-x fibers by the sol-gel method using metal alkoxides," 6 J Mater Res 1629-1633 (1991). Venkatasusubramanian N, Wade B, Desai P, Abhiraman., "Synthesis and characterization of spinnable sol-gel derived polyborates," 130 J Non-Cryst Sol 144-156 (1991). Selvaraj U, Prasadarao A V, Komameni S, Brooks K, Kurtz S., "Sol-Gel processing of PbTiO3and Pb(Zr0.52 Ti0.48)O3fibers," 7 J Mat Res 992-996 (1992). Yoso T, Iwahara H., "Synthesis of β-alumina fiber from modified aluminum alkoxide precursor," 27 J Mat Sci 1499-1504 (1992). Seddon AB., "Applicability of sol-gel processing in production of silica based optical fibers," 9 Mat Sci Tech 729-736 (1993). Emig G, Fitzer E, Zimmerman-Chopin R., "Sol-gel process for spinning of continuous (Zr,Ce)O2fibers," A189 Mat Sci Eng 311-317 (1994). Emig G. Wirth R, Zimmermann-Chopin R., "Sol1gel-based precursors for manufacturing refractory oxide fibers," 29 J Mat Sci Lett 4559-4566 (1994). Chiou YH, Tsai MT, Shih HC., "The preparation of alumina fiber by sol-gel processing," 29 J Mat Sci 2378-2388 (1994). Narang U, Gvishi R, Bright FV, Prasad PN., "Sol-gel-derived micron scale optical fibers for chemical sensing," 6 J Sol-Gel Sci Tech 113-119 (1996). Matejec V, Hayer M, Pospisilova M, Kasik I., "Preparation of optical cores of silica optical fibers by the sol-gel method," 8 J Sol-Gel Sci Tech 889-893 (1997). Jokinen M, Peltola T, Veittola S, Rahiala H, Rosenholm JB., "Biodegradable Ii ceramic fibres from silica sols," 20 J Eur Ceram Soc 1739-1748 (2000). Hench L., "Bioactive ceramics: Theory and clinical applications," 7 Bioceramics 3-14 (1994). Voigt C, Mtiller-Mai C, Kandilakis K, Kangasniemi I, Yli-Urpo A, Gross U., "Biological reaction after implantation of sol-gel activated titanium cylinders in the distal epiphysis of the rabbit femur," 13thEuropean Conference on Biomaterials 42-45 (Goteborg, Sweden 1997), Kokubo T, Kushitani H, Sakka S, Kitsugi T, Yamamuro T., "Solutions able to reproduce in vivo surface-structure changes in bioactive glass-ceramic A-W3," 24 J Biomed Mater Res 721-734 (1990). Koch OG, Koch-Dedic GA, Handbuch der Spurenanalyse 1105 (Berlin Springer-Verlag 1974). Rehman I, Bonfield W., "Characterization of hydroxyapatite and carbonated apatite by photo acoustic FTIR spectroscopy," 8 J Mater Science. Mater Medicine 1-4 (1997). Peltola T, Jokinen M, Rahiala H, Levanen E, Rosenholm JB, Kangasniem I, Yli-Urpo A., "Calcium phosphate formation on porous sol-gel derived SiO2and CaO-P205-SiO2substrates in vitro," 44 J Biomed Mater Res 12-21 (1999). Pereira MM, Hench LL., "Mechanisms of hydroxyapatite formation on porous gel-silica substrates," 7 J Sol-Gel Sci Tech 59-68 (1996). Andersson OH, Kangasniemi I,. "Calcium phosphate formation at the surface of bioactive glass in vitro," 25 J Biomed Mater Res 1019-1030 (1991). Peltola T, Jokinen M, Rahiala H, patsi M, Heikkila J, Kangasniemi I, Yli-Urpo A., "Effect of aging time of sol on structure and in vitro calcium phosphate formation of sol-gel derived titania films," 51 J Biomed Mater Res 200-208 (2000). Jokinen M, patsi M, Rahiala H, Peltola T, Ritala M, Rosenholm Jarl B., "Influence of sol and surface properties on in vitro bioactivity of sol-gel derived TiO2and TiO2-SiO2films deposited by dip coating method," 42 J Biomed Mater Res 295-302 (1998).
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Saxton Robert J. (West Chester PA) Zajacek John G. (Devon PA), Method of making essentially silicic zeolite beta.
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