Collect. Czech. Chem. Commun. 1984, 49, 592-596

Selectivity of hydrogenation in an alkyne-alkene system on palladium catalysts modified with inorganic salts

Libor Červenýa, Nguyen Thi Thanhb and Vlastimil Růžičkaa

a Department of Organic Technology, Prague Institute of Chemical Technology, 166 28 Prague 6, ČSSR
b Hanoi Polytechnical Institute, Vietnam


The competitive catalytic hydrogenation of 2-octyne and 1-heptene in methanol has been studied on catalysts 3% Pd on activated carbon and Pd black, modified with ammonium chloride, potassium chloride, potassium carbonate, or calcium carbonate. The rates of hydrogenation of the two substrates and the rate of isomerization of 1-heptene have been determined. The effect of inorganic salts on the activity and selectivity of the catalysts is discussed.