Relationship between Surface Properties of Modified Titanooxides and Their Catalytic Performance in the Reaction of Ethylene Glycol Ethoxylation
R. A.В Kozlovskiy1, V. F.В Shvets1, A. V.В Koustov1, L. E.В Kitaev2, V. V.В Yushchenko2, V. V.В Kriventsov3, D. I.В Kochubey3 and M. V.В Tsodikov4
1D. I. Mendeleev University of Chemical Technology of Russia,
Miusskaya Pl. 9, Moscow 125047 (Russia), E-mail: kra@muctr.edu.ru
2M. V. Lomonosov Moscow State University, Chemical Department,
Vorobyovy Gory, Moscow 119899 (Russia),
3G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences,
Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia),
4A. V. Topchiev Institute of Petrochemical Synthesis, the Russian Academy of Sciences,
Leninskii prospect 29, Moscow 117912 (Russia)
Страницы: 123-130
Аннотация
Relationship of structure and surface properties of modified titanium dioxides, prepared by alkoxide method using derivatives of phosphoric acid as precursors, with their catalytic performance in the reaction of ethylene glycol ethoxylation was investigated. It was found, that such catalysts are mono-phase, nanocluster ones with anatase structure, and have uniform narrow pore distribution. Catalysts prepared using the amidophosphite precursors provide high catalytic activity due to the high surface acidity, and high selectivity of diethylene glycol formation due to the "sieve effect" and concert acid-base mechanism of ethylene oxide addition.
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