Ld. Volkova et al., ADSORPTION AND STRUCTURAL-PROPERTIES OF HETEROPOLYACID-MODIFIED PD AL2O3 CATALYSTS - EFFECTS ON HYDROGENATION ACTIVITY/, Mendeleev communications, (3), 1994, pp. 107-108
The modification of Pd/Al2O3-catalysts by heteropolyacids (HPA) leads
to the formation of qualitatively new surface sites, which determine t
he sample activity in hydrogenation reaction of C=C unsaturated bonds
in organic compounds.