Molten carbonates: microwave studies of the vapor state. Progress report, June 1, 1982-May 31, 1983

Technical Report · Sat Jan 01 04:00:00 EST 1983

OSTI ID:6773962

Gillies, C W

This technical report describes progress made for the period beginning June 1, 1982 in the study of the vapor state above alkali carbonate melts with fuel gas atmospheres. The high temperature microwave apparatus required for this work was completed and the microwave absorption cell was tested at room temperature and high temperature (500 to 550/sup 0/C) with carbonyl sulfide and HDO. The J = 1 ..-->.. 2 transition of monomeric KOH was observed for the first time above a pure KOH melt at 400/sup 0/C. At temperatures of 500 to 550/sup 0/C the microwave absorption cell developed problems associated with the Stark modulation utilized in the spectrometer for both pure KOH and a 62% Li/sub 2/CO/sub 3/ + 38% K/sub 2/CO/sub 3/ mixture in a fuel gas atmosphere. In addition, the SS304 components were corroded by the hot KOH vapor and potassium metal was produced in the cell. Independent corrosion studies demonstrated that Ni 200 was not affected by these vapors and a number of the SS304 components have been replaced with Ni 200. Presently, the spectrometer problems are being solved by two independent approaches. Model microwave calculations were performed for LiOH.H/sub 2/O, NaOH.H/sub 2/O and KOH.H/sub 2/O. The predicted spectral properties indicate the species will be unusually polar nearly prolate symmetric tops with observable bands within the frequency range of the high temperature microwave spectrometer. 7 figures, 6 tables.

• Research Organization: Rensselaer Polytechnic Inst., Troy, NY (USA). Dept. of Chemistry
• DOE Contract Number: AC02-81ER10909
• OSTI ID: 6773962
• Report Number(s): DOE/ER/10909-02; ON: DE83005998
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300501* -- Fuel Cells-- Design & Development
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
DATA
DIMERS
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
EQUILIBRIUM
EXPERIMENTAL DATA
FLUIDS
FUEL CELLS
GASES
HIGH TEMPERATURE
HIGH-TEMPERATURE FUEL CELLS
HYDRATES
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
LITHIUM CARBONATES
LITHIUM COMPOUNDS
LITHIUM HYDROXIDES
MICROWAVE SPECTRA
MOLTEN CARBONATE FUEL CELLS
MONOMERS
NUMERICAL DATA
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
RESEARCH PROGRAMS
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SPECTRA
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
VAPORS