Platinum Metals Review - Volume 4, Issue 4, 1960

A new type of metal-sheathed mineral-insulated platinum thermocouple has been developed by Johnson Matthey to provide flexibility with resistance to thermal shock and corrosion. Applications are outlined in the steel, glass, engineering and nuclear energy industries.

In this article, to be published in two parts, some recent findings are included in a review of the pressure-concentration temperature (P-C-T) relationships of the palladium/hydrogen and palladium/ deuterium systems. A brief account is given of experimental information concerning the structure of, and diffusion of hydrogen in, the solids which are the products of the absorption of hydrogen by palladium. Attention is paid to considering errors of interpretation of experimental results that can arise when true thermodynamic equilibrium does not exist between the solids and hydrogen molecules—both in the presence and absence of aqueous solution

This note, communicated from the Johnson Matthey Research Laboratories, records an investigation of the thermal expansion characteristics of a number of rhodium-platinum alloys at temperatures up to 1500°C. The data obtained will be found particularly helpful to users of these alloys in the glass industry.

The growing importance of catalysis in the chemical industry has been recognised by the organisation of a series of International Conferences, the first being held in Philadelphia in 1956. At the second Conference, arranged in Paris in July by the Societe” de Chimie Physique and the Institut Franqais du Petrole, over 600 representatives attended. This review deals with those of the papers describing work carried out with the platinum metals.

The characteristics of the six platinum metals provide an interesting study in their variations with atomic number and position in the periodic table. This article discusses the inter-relationships of the physical and chemical properties of these elements and of those of their neighbouring transition metals.