SYNTHESIS OF MESOPOROUS TITANIUM OXIDE AND CATALYTIC ACTIVITY OF Ru/m-TiO2

Abstract

A series of mesoporous TiO₂ oxide (m-TiO₂) were synthesized by using n-cetylpyridinium chloride (C₁₆P_yCl) as a structure-directing agent under complete different conditions. The synthesized mesoporous samples were characterized by means of FT-IR, XRD, and N₂ adsorption methods. Effects of template, solvent, pH, ageing temperature and C₁₆P_yCl/TTIP molar ratio on the structure and stability of m-TiO₂ were also discussed. The results show that the property of m-TiO₂ synthesized by using C₁₆P_yCl as template, C₂H₅OH as solvent, pH 7-8, ageing temperature 20 ^oC and C₁₆P_yCl/TTIP molar ratio 2 are superior to that of m-TiO₂ prepared under other conditions. After being loaded by the impregnating method, the Ru particle strongly interacts with the mesoporous supports. The catalytic activity of Ru/m-TiO₂ for methanol decomposition to carbon monoxide and hydrogen was investigated. It is found that synthesizing conditions of mesoporous materials affect the catalytic activity of Ru/m-TiO₂.



KEY WORDS: Mesoporous titanium oxide, Methanol decomposition, Ruthenium, Catalyst support, n-Cetylpyridinium chloride


Bull. Chem. Soc. Ethiop. 2005, 19(2), 277-288.