Influence of thermal treatments on phase composition and acidity of mesoporous tungsten oxides

N. Kasian (1) , E. Puzenat (1) , A. Tuel (1) , O.V. Shvets , P.S. Yaremov

1 MATERIAUX - MATERIAUX

Tungsten trioxide has attracted much attention because of its unique photo-, thermo-, gaso- and electrochromic properties. Wide range of application of tungsten trioxide requires both high crystallinity as well as large surface area. In the present work we have investigated the influence of thermal treatments (calcination and treatment in reducing environment) on phase composition, crystallization and acidity of mesoporous tungsten oxides prepared via hard templating method. The acidity of WO3 materials was studied by pyridine adsorption-desorption method and chemisorption of probe molecules (CO, H2).

Domaines: Catalyse; Environnement et Société

N. Kasian, E. Puzenat, A. Tuel, O.V. Shvets, P.S. Yaremov. Influence of thermal treatments on phase composition and acidity of mesoporous tungsten oxides. 17th International Zeolite Conference, Jul 2013, Moscou, Russia. ⟨hal-00842337⟩