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Platinum Metals Rev., 1968, 12, (3), 98

Properties and Uses of Palladium

Palladium: Recovery, Properties and Uses, by Edmund M. Wise, Pp. xii and 187 Academic Press, New York and London, $11 (102s.)

  • L. B. H.
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Although it is probably better known for its catalytic uses and its selective transmission of hydrogen, palladium, the cheapest of the platinum metals and the second most abundant, has an unusual ability to form workable alloys with an extremely wide range of other metals. For this reason palladium has a number of commercial uses in the electrical contact field, in special purpose brazing alloys and in dentistry and jewellery, and these applications are all dealt with briefly in the present volume. Perhaps the most valuable part of the book to the metallurgist, however, is the lengthy compilation of binary and ternary equilibrium diagrams that forms the longest chapter, in each case full properties of the alloys being given as far as they are established.

Palladium plating is also of growing interest, particularly in the telecommunications field, and several suitable electrolytes are described in a short chapter on this subject, but it is a little unfortunate that the obsolescent tetrammino-palladous nitrate bath (giving matte deposits) is featured and that no reference is made to the diammino-palladous nitrite bath yielding bright deposits.

Although the title of the book includes the word “Recovery”, little or no reference is made to the mineralogy, extraction or refining of palladium, while the substantial output from South Africa also escapes mention.

A final chapter contributed by P. N. Rylander surveys the many types of reactions in which palladium serves as a catalyst.

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