“…The platinum group metals platinum, palladium [167], rhodium and ruthenium and combinations of these and other elements [168] are known to confer additional activity, selectivity (both S I and S i , also if other functional groups such as carboxy groups in fatty triglycerides or fatty acids are present), stability and lifetime in hydrogenation of oleochemical derivatives [115,127,143,144,[169][170][171][172][173]. Their better selectivity in slurry hydrogenation is mainly a result of their higher activity, which allows hydrogenation to be run at 50-120 • C compared with 130-230 • C in the case of nickel, thus favoring geometric isomerization (see Section 14.10.4.4.3).…”