Novel aminophosphonate ligand for the preparation of catalytically active silica aerogels with finely dispersed palladium

Silica-based aerogels bearing a novel aminophosphonate-containing substituent were prepared. Pd2+ and Cu2+ ions introduced into aerogel matrix to form chelated complexes with aminophosphonate moiety. Both securely retain Me2+ after supercritical drying (SCD) in CO2. In silica matrix, Pd complex is reduced metallic treatment by gaseous H2 at 120 °C. lyogel can also be upon SCD isopropanol. Pd-containing showed excellent catalytic activity the reaction of C=C C=Cbonds hydrogenation.