RESEARCH ON CHARACTERISTICS OF TRANSITION ELEMENTS IN SOLUTION. 1. STUDIES ON RHODIUM CHEMISTRY, WITH A NOTE ON PALLADIUM. 2. STUDIES ON RUTHENIUM CHEMISTRY
Abstract
Systematic studies were made on the preparation and characterization of halogenide-free rhodium sulfate and perchlorate solutions. Improved methods of preparation and analysis were worked out. Some redox emfs for Rh(III, V) mixtures are given. They do not correspond to real equilibrium, but the apparent standard electrode potential in 0.5 - 1 M HClO4 is around 1.42 V. Absorption spectra are given for the solution prepared. Pure palladium(II) perchlorate and sulfate solutions were prepared by precipitating first - with HClO4 hydrous palladium oxide from a clear alkaline solution of Pd(NO3)2 and then dissolving the precipitate in cold HClO4 (H2SO4). Redox reactions of Ru in 1 M H2SO4 medium were studied: The oxidation number was varied step wise by chemical means (Ti(III), Cr(II), Ce(IV)) or coulometrically, and e was measured. The resulting curves bring out the existence of slow, irreversible reactions, and of polynuclear species of mixed oxidation number.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1963
- Accession Number
- AD0404521
Entities
People
- Clara Berecki-biedermann
- Derek C. Lewis
- Felipe Brito
Organizations
- Royal Institute of Technology