e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Catalysis Communications
Sulfonated rice husk ash (RHA-SO 3 H): A highly powerful and efficient solid acid catalyst for the chemoselective preparation and deprotection of 1, 1-diacetates
F Shirini, M Mamaghani, M Seddighi
Index: Catalysis Communications, , vol. 36, p. 31 - 37
... Catalysis Communications. ... Also this catalyst can be reused for several times without loss of its catalytic activity. ... On the basis of these points it can be concluded that, at the same conditions, the use of RHA as a support for the preparation of catalysts is better than the use of silica ...