APPLICATION OF HETEROGENEOUS COLLOID CATALYSTS FOR THE PREPARATION OFFINE CHEMICALS

Preprepared nanometals stabilized by surfactants may be used as precur sors for a new type of heterogeneous catalyst. Independent of the supp ort these mono-or plurimetallic precursors may be optimized dependent on the size, composition, and structure of the particles. Further, the active metal surface may be shielded against poisons by the protectiv e shed.-In addition, doping agents may be used in older to enhance the catalytic performance. The cia-selective partial hydrogenation of 3-h exyn-1-ol giving leaf alcohol, a valuable fragrance, and the selective oxidation of glucose giving sodium gluconate are current examples for the application of supported nanometal colloids in fine chemicals cat alysis.