Increasing the Brønsted Acidity of Flame-Derived Silica/Alumina up to Zeolitic Strength


  • We kindly acknowledge financial support by the ETH, Zürich (no. TH-09 06-2).


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Feel the burn: Silica/alumina was prepared in milliseconds by flame-spray pyrolysis (see picture) with a homogeneous composition and at super-high calcination temperatures. This solid acid has tunable acidity ranging from weak or moderate to strong Brønsted acidity. This unique property makes this material versatile for desired industrial applications.