Metallic Palladium and Its Mixtures

In some cases, Pd catalysts of reduced activity are desired. Partial hydrogenation of alkynes to alkenes without producing significant amounts of alkanes is a representative example, and partially poisoned Pd catalysts, most notably Lindlar s catalyst consisting of Pd on CaC03 deactivated by PbO or some other Pb compounds, have been widely used. 

Since the use of metallic Pd and its mixtures or more specifically their applications in heterogeneous catalytic reductions are discussed in Sect. VII.2 as well as Sects. III.3.1, 

Handbook of Organopalladium Chemistry for Organic Synthesis, Edited by Ei-ichi Negishi ISBN 0-471-31506-0 2002 John Wiley Sons, Inc. 

TABLE 1. Some Commercially Available Palladium on Supports  

and VI.2.4, these sections and references cited therein shonld be consnlted for additional discnssion of metallic Pd and its mixtnres. 

---