Semi-quantitative estimation by IR of framework, extraframework and defect Al species of HBEA zeolites.
A simple method based on the characterization (composition, Bronsted and Lewis acidities) of acid treated HBEA zeolites was developed for estimating the concentrations of framework, extraframework and defect Al species.
Centro de Engenharia Biologica e Quimica, Instituto Superior Tecnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
João P
JP
Marques
Isabelle
I
Gener
Philippe
P
Ayrault
José M
JM
Lopes
F Ramôa
FR
Ribeiro
Michel
M
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