Craig Collins, Gregory Mann, Elizabeth Hoppe, Thomas Duggal, Tery L. Barr and Jacek Klinowski
The silica garden Brønsted acid catalyst is a framework aluminosilicate derived from silica by isomorphous substitution of 4-coordinate silicon by 4-coordinate aluminium. 6-coordinate aluminate cationic units and Brønsted protons balance the net charge of the polyanionic network.