Nm. Guindy et al., PHOTOCHEMICAL HYDROGEN FORMATION FROM A WATER-SOLUBLE ACETOPHENONE DERIVATIVE IN PRESENCE OF COLLOIDAL PLATINUM, Journal de chimie physique et de physico-chimie biologique, 89(3), 1992, pp. 629-638
Photochemical reaction of an acetophenone derivative, darocure, has be
en investigated from the viewpoint of hydrogen evolution on the surfac
e of colloidal platinum. The hydrogen yield was studied under various
conditions. The effect of adding ethyl alcohol and/or triethylamine as
hydrogen donors was also studied. The hydrogen yield was found to be
low in aqueous solution due to destruction of darocure by is-proportio
nal-to-cleavage. However, in the presence of ethanol or triethylamine,
the hydrogen yield was enhanced and continuous hydrogen evolution was
obtained due to the recyclization of (i) acetone in ethanol and (ii)
darocure in triethylamine aqueous solution.