Modifying the Functional Cover of the -Al₂O₃ Surface Using
Organic Salts of Aluminum

R. M. Mironenko^a,*, O. B. Belskaya^{a, b}, I. G. Danilova^c, V. P. Talsi^{a, b}, and V. A. Likholobov^{a, b}

^a Institute of Hydrocarbons Processing, Siberian Branch, Russian Academy of Sciences, Omsk, 644040 Russia

^b Omsk State Technical University, Omsk, 644050 Russia

^c Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Science, Novosibirsk, 630090 Russia

*e-mail: ch-mrm@mail.ru

Received June 17, 2010

Abstract—A method is suggested for modifying the surface properties of alumina without changing its chem-
ical composition. The sorption of aluminum complexes with organic acid ligands on the -Al₂O₃ surface is
reported. The thermal decomposition of the adsorbed oxalate complexes yields supported aluminum oxide
compounds on the surface of the initial support. This modifies the functional cover of the -Al₂O₃ surface, alter-
ing the proportions of different types of surface hydroxyl groups, reducing their total number, and lowering the
concentration of weak Lewis acid sites.

DOI: 10.1134/S0023158411040094

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