By Robert J. Gale, David G. Lovering (auth.), Robert J. Gale, David G. Lovering (eds.)
This moment quantity includes at the very good paintings of its predecessor, ex tending its scope to different melts and to different strategies. It keeps to offer first-hand knowing and event of this tough and significant box. there's ever current the trade-off or reconciliation among the unconventional chemistry of platforms no longer ruled via the mediating impact of a supposedly detached solvent and the excessive temperatures required to impact the fluidity of the process. on the restrict, the very excessive temperatures so elevate the premiums of all reactions as to dissolve the temporal distinction among the thermodynamic and the kinetic view of chemistry. What can occur will take place and consistently does occur. Vessels corrode, the gear turns into a reactant, and the variety of tolerant fabrics capable of stand up to the assault shrinks to graphite, boron carbide or, if all else fails, to frozen elements of the molten salt itself. it's most likely actual that there's no restrict to man's ingenuity yet i think that God gave us molten salts simply to attempt that thesis. If there's ever a Molten Salt membership, and Englishmen love golf equipment, its club can be particular. it will definitely contain the authors of this sequence. Graham Hills college of Strathclyde ix Preface within the first quantity of this sequence, we expressed our rivalry genuine want existed for functional assistance within the box of molten salt experimentation.
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Extra info for Molten Salt Techniques: Volume 2
Example text
28 This seal should be pliable enough to seal against the edges of the cell stack, it should be nonconductive to prevent any short circuit currents, and it should be stable in a carbonate environment. No single material has been found so far to satisfy these seemingly contradictory requirements. In the absence of a suitable nonconductive gasket material, a bilayer seal consisting of a. b. , "D Gun" coating, Union Carbide) on a stainless steel substrate to provide dielectric properties, A low porosity Ah0 3 or Zr0 2 felt impregnated with carbonate melt to serve as a pliable seal, appears to be a practical solution for the time being.
The hygroscopic character of the alkali carbonates increases in the order Li2C03 < Na2C03 < K2C03. The best possible storage conditions should therefore be provided, keeping the hygroscopicity in mind. Damp floors, leaking roofs, and moist storage conditions must be avoided. Moisture absorption may cause lumping and a reduction in alkalinity. Also avoid storage where contact with acid is possible. When large quantities are spilled, they should be recovered and may be reused. Small quantities may be disposed of by flushing the area with water into a drain system.
Physicochemical Properties of Alkali Carbonate Mixtures X 25 25 5 to- 10 Vapor loss! cm3atm X 10-7 Alkali Metal Carbonates 25 ~ ... • . • . • l~ J ~ A ~~~:· I FIGURE 2. Apparatus for Density-Surface Tension Measurement. ) Reprinted by permission of the Publisher, The Electrochemical Society. ment used at the Institute of Gas Technology. 13 The weight measurements are taken periodically in this case by removing Plug C and suspending the crucible from the balance. The plug prevents any back diffusion of outside gases.