alkali metals - the elements lithium, sodium, potassium, rubidium, caesium and francium, all metals in the first group of the periodic table. In most compounds they ocuur as univalent ions.
... Catalyst consisting of palladium and rhenium, fixed on a support of active carbon, in the form of powder, containing: - 0,5 % or more but not more than 1,5 % by weight of palladium, - 3 % or more but not more than 5 % by weight of rhenium and - 0,1 mole % or more but not more than 1 mole % of alkaline metals, for use in the manufacture of tetrahydrofuran (a) ...
