Hostname: page-component-76fb5796d-5g6vh Total loading time: 0 Render date: 2024-04-26T23:26:28.267Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis, Characterization and Modification of Mcm-41 Molecular Sieves

Published online by Cambridge University Press:  28 February 2011

A. Sayari ,
V.R. Karra ,
J.S. Reddy  and
I.L. Moudrakovski
A. Sayari
Affiliation:
Department of Chemical Engineering and CERPIC, Université Laval, Ste-Foy, Qc, Canada G1K 7P4.
V.R. Karra
Affiliation:
Department of Chemical Engineering and CERPIC, Université Laval, Ste-Foy, Qc, Canada G1K 7P4.
J.S. Reddy
Affiliation:
Department of Chemical Engineering and CERPIC, Université Laval, Ste-Foy, Qc, Canada G1K 7P4.
I.L. Moudrakovski
Affiliation:
Department of Chemical Engineering and CERPIC, Université Laval, Ste-Foy, Qc, Canada G1K 7P4.
Get access

Abstract

A series of crystalline mesoporous molecular sieves were prepared using alkyl hexadecyl dimethyl ammonium bromide salts (C16H33)(CnH2n + 1)(CH3)2NBr, in which the number of carbon atoms (n) in one alkyl group was varied from 1 to 12. The influence of (n) value on the nature of the final phase obtained and on its pore size was investigated. A hexagonal phase was obtained for n = 1, 3, 5 and 7, while a lamellar phase was obtained for all other templates. Vanadium and titanium modified MCM-41 molecular sieves were also prepared in the presence of C12H25(CH3)3N+ and C16H33(CH3)3N+ ions, respectively. These materials were characterized by XRD, nitrogen physisorption, FTIR, solid state NMR, XPS, UV-Vis and catalytic testing in the oxidation of 1-naphthol, 2,6-di-tert-butylphenol, norbornylene, n-hexane and propylamine. Ti-MCM-41 exhibited considerable catalytic activity only in the oxidation of aromatics, olefins and alcohols. V-MCM-41 was found to be a good catalyst in the oxidation of aromatics and alkanes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 371: Symposium W1 – Advances in Porous Materials , 1994 , 81
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. (a) Kresge, C.T., Leonowicz, M.E., Roth, W.J., Vartuli, J.C. and Beck, J.S., Nature 359, 710 (1992);Google Scholar
(b) Beck, J.S., Vartuli, J.C., Roth, W.J., Leonowicz, M.E., Kresge, C.T., Schmitt, K.D., Chu, C.T-W., Olson, D.H., Sheppard, E.W., McCullen, S.B., Higgins, J.B. and Schlenker, J.L., J. Am. Chem. Soc. 114, 10834 (1992).Google Scholar
2. Beck, J.S., Vartuli, J.C., Kennedy, G.J., Kresge, C.T., Roth, W.J. and Schramm, S.E., Chem. Mater., 6, 1816 (1994), and references therein.Google Scholar
3. Huo, Q., Margolese, D.I., Ciesla, U., Demuth, D.G., Feng, P., Gier, T.E., Sieger, P., Firouzi, A., Chmelka, B.F., Schiith, F. and Stucky, G.D., Chem. Mater., 6, 1176 (1994).Google Scholar
4. Reddy, K.M., Moudrakovski, I. and Sayari, A., J. Chem. Soc., Chem. Commun. 1994, 1491, and references therein.Google Scholar
5. (a) Taramasso, M., Perego, G. and Notari, B., U.S. Patent No. 4410501 (1983);Google Scholar
(b) Reddy, J.S., Kumar, R. and Ratnasamy, P., Appl. Catal. 58, L1 (1991);Google Scholar
(c) Camblor, M.A., Corma, A., Martinez, A. and Perez-Pariente, J., J. Chem. Soc., Chem. Commun. 1992, 589.Google Scholar
6. Reddy, K.M., Moudrakovski, I. and Sayari, A., J. Chem. Soc., Chem. Commun. 1994, 1059.Google Scholar
7. (a) Tanev, P.T., Chibwe, M.T. and Pinnavaia, T.J., Nature 368, 321 (1994);Google Scholar
(b) Corma, A., Navarro, M.T., Pérez-Pariente, J. and Sánchez, F., Stud. Surf. Sci. Catal. 84, 69 (1994);Google Scholar
(c) Sayari, A., Reddy, K.M. and Moudrakovski, I., Stud. Surf. Sci. Catal. 84D, (1994), in press;Google Scholar
(d) Corma, A., Navarro, M.T., PérezPariente, J. and Sánchez, F., Stud. Surf. Sci. Catal. 84, 69 (1994).Google Scholar
8. Israelachvili, J.N. in Surfactants in Solution, edited by Mittal, K.L. and Bothorel, P. (Plenum, New York, 1987), Vol.4, p. 145.Google Scholar
9. Boccuti, M.R., Rao, K.M., Zecchina, A., Leofanti, G. and Petrini, G., Stud. Surf. Sci. Catal. 48, 133 (1989).Google Scholar