Molten salts salt chemistry control

Jan. 20, 1927, Cleveland, Ohio, USA - Aug. 10, 2004, Raleigh, NC, USA) Osteryoung received his bachelor s education at Ohio University and his Ph.D. at the University of Illinois. He was professor and Chairman of the Chemistry Department at Colorado State University, a professor at the State University of New York at Buffalo and research professor and Chair of the Department of Chemistry of North Carolina State University. He published about 225 original scientific papers, and was especially known for his papers on double potential step -> chronocoulometry, -> square-wave voltammetry, and room-temperature molten salt electrochemistry. He also initiated computer-controlled electrochemical measurements, which helped in developing and optimizing - pulse voltammetry. He served as an Associate Editor for the journal Analytical Chemistry. 

Robert Osteryoung is picked out here for recognition because—apart from his pioneering work on low temperature molten salts—he is well known for his early work on pulse techniques (Chap. 8). He was the first to develop computers to control electrochemical experiments. Professor Osteryoung is a Head of Chemistry at North Carolina State University where unlike some great researchers, he is well known for his success as an able administrator. 

One of the major concerns about this technology, besides the limited technolo base, is the lack of materials with demonstrated long-term compatibility. Long-life operation will require on-line chemistry control and processing of the molten-salt fuel, and although demonstrated at the laboratory level, such processing remains a development issue. 

Molten salt purification and chemistry control (research). Molten salt coolant will require cleanup systems to remove impurities from the salt and to control the salt chemistry. A facility to enable researchers to understand, develop, demonstrate, and test alternative cleanup and coolant chemistry control systems is required to ensure effective control of salt chemistry. 

Rh compounds exhibit valences of 2, 3, 4, and 6. The tnvalent form is by far the most stable. When Rh is heated in air, it becomes coated with a film of oxide. Rhodium(III) oxide, Rh Os, can be prepared by heating the finely divided metal or its nitrate in air or O2. The rhodium IV) oxide is also known. Rhodium trihydroxide may be precipitated as a yellow compound by adding the stoichiometric amount of KOH to a solution of RhCb. The hydroxide is soluble in adds and excess base. When the freshly precipitated Rh(OH) is dissolved in HC1 at a controlled pH, a yellow solution is first obtained in which the aquochloro complex of Rh behaves as a cation. The hexachlororhodatetHI) anion is formed when the solution is boiled for 1 hour with excess HC1. The solution chemistry of RI1CI3 is often very complex. Two trichlorides of Rh aie known The trichloride formed by high-temperature combination of the elements is a red, crystalline, nonvolatile compound, insoluble in all aads. When Rh is heated in molten NaCl and treated with Clo, Na RJiClg is formed, a soluble salt that forms a hydrate in solution. Rhodium(III) iodide is formed by the addition of KI to a hot solution of tnvalent Rh. 

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