PREPARATION OF HYBRID ORGANO-INORGANIC CATALYSTS
2173
10. Collignon, F., Loenders, R., Martens, J.A., et al.,
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CONCLUSIONS
11. Siril, P.F. and Brown, D.R., J. Mol. Catal. A: Chem.,
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12. Hatton, B., Landskron, K., Whitnall, W., et al., Acc.
Chem. Res., 2005, vol. 38, pp. 305–312.
13. Corain, B., Zecca, M., and Jerabek, K., J. Mol. Catal. A:
Chem., 2001, vol. 177, pp. 3–20.
(1) In the performance and selectivity in synthesis
of ethyl tert-butyl ether, acid catalysts of the
composition MSM-v(х)–SO3H surpass commercial
sulfonic cation exchangers despite lower concentration
of acid centers.
(2) High parameters of catalysts of this type are
primarily due to their mesoporous structure ensuring
accessibility of all acid centers to the reactants and
favoring efficient mass exchange in the catalytic
reaction.
14. Kunz, U., Altwicker, C., Limbeck, U., and Hoffmann, U.,
J. Mol. Catal. A: Chem., 2001, vol. 177, pp. 21–32.
15. Kochkin, Yu.N. and Vlasenko, N.V., Theor. Exp. Chem.,
2002, vol. 38, no. 2, pp. 129–134.
16. Vlasenko, N.V., Kochkin, Yu.N., Shvets, A.V., and
Kas’yan, N.V., Katal. Prom–sti, 2008, no. 1, pp. 27–32.
17. Vlasenko, N.V., Kochkin, Yu.N., and Puziy, A.M., J.
Mol. Catal. A: Chem., 2006, vol. 253, pp. 192–197.
18. Wight, A.P. and Davis, M.E., Chem. Rev., 2002, vol. 102,
pp. 3589–3614.
(3) The correlation between the acid and catalytic
characteristics of MSM-v(х)–SO3H samples is
manifested as the dependence of their performance on
the acid center strength: With a decrease in the acid
center strength, the activity in synthesis of ethyl tert-
butyl ether increases.
19. Sartori, G., Ballini, R., Bigi, F., et al., Chem. Rev., 2004,
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(4) The selectivity of this type of catalysts can be
additionally increased by making the surface more
hydrophobic via increasing the amount of
nonsulfonated organic groups.
20. Melero, J.A., van Grieken, R., and Morales, G., Chem.
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21. US Patent 5338890.
22. FRG Patent 4234779.
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