Solid state NMR study of acid sites formed by adsorption of SO3 onto gamma-Al2O3

Chem Commun (Camb). 2003 Apr 7:(7):884-5. doi: 10.1039/b301140b.

Abstract

Detailed structure of Brønsted acid sites on the surface of SO3/Al2O3 catalyst has been proposed based on 1H/27Al TRAPDOR NMR results and the acidity of the catalyst has also been characterized by NMR probe molecules.