Studies in molten chloroaluminates: I. Multipass spectroelectrochemistry; II. Spectroscopic and electrochemical investigations of iridium carbonyls
The multipass technique is introduced as an optical enhancement method for thin-layer spectroelectrochemistry. In this approach, the light beam is redirected through an optically transparent electrode (OTE) several times by an external mirror assembly. This arrangement is achieved using a low power continuum source which allows simultaneous multiwavelength measurements. The gain in optical sensitivity is directly related to the number of passes through the cell and has a practical limit of three to five. Initial evaluation with an aqueous test system yielded results which agree well with theory. The enhancement is not dependent upon electrode reflectivity and, therefore, the method may be applied to studies in highly corrosive media. Studies of the oxidation of sulfur and the reduction of niobium pentachloride in molten chloroaluminates are presented to demonstrate the utility of ths technique for investigations in such media. 203 refs., 51 figs., 15 tabs.
- Research Organization:
- Oak Ridge Associated Universities, Inc., TN (USA); Tennessee Univ., Knoxville (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5471665
- Report Number(s):
- DOE/OR/21400-T273; ON: DE86014195
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Thesis
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM CHLORIDES
ABSORPTION SPECTROSCOPY
ELECTROCHEMISTRY
INFRARED SPECTRA
RAMAN SPECTRA
VOLTAMETRY
X-RAY SPECTRA
CARBONYLS
ABSORPTIVITY
CATALYTIC EFFECTS
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
IRIDIUM COMPOUNDS
NIOBIUM
REDUCTION
PERMANGANATES
SULFUR
OXIDATION
AQUEOUS SOLUTIONS
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
MOLTEN SALTS
ALUMINIUM COMPOUNDS
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
DATA
DISPERSIONS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
MANGANESE COMPOUNDS
METALS
MIXTURES
NONMETALS
NUMERICAL DATA
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SALTS
SOLUTIONS
SPECTRA
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties
400104 - Spectral Procedures- (-1987)
400400 - Electrochemistry