Accession Number : ADA324561

Title :   Investigations of Ambient-Temperature Chloroaluminate Molten Salts.

Descriptive Note : Doctoral thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Mantz, Robert A.

PDF Url : ADA324561

Report Date : 06 MAY 1997

Pagination or Media Count : 436

Abstract : The objective of this project was to further characterize ambient temperature chloroaluminate ionic liquids (melts) composed of aluminum chloride and 1-ethyl-3-methylimidazolium chloride (EMIC). These studies can be broken down into three broad areas: properties of neutral buffered and binary melts, investigation of structure present in AlCl3:EMIC melts, and high frequency square wave voltammetry of solutes in the melts. Within the area of melt properties of the buffered and binary melts three studies were conducted. In the first, the stoichiometry of a 'latent acidity' observed in melts buffered with alkali metal chloride salts is found to be unity with respect to the alkali metal cation concentration. The second study dealing with properties of alkali metal chloride neutral buffered and binary melts dealt with the determination of the Gutmann acceptor numbers for a series of binary and neutral buffered melts. The neutral buffered melts do not achieve the same Lewis acidity as the binary melts. The LiCl neutral buffered melt is the most Lewis acidic followed by the NaCl and finally the KCl neutral buffered melts. The third study dealing with properties of buffered melts involved the generation of buffered melts through the addition of water. The buffering agent is an aluminum hydroxide species formed in the melt through the addition of water.

Descriptors :   *MELTS, *SALTS, *BUFFERS(CHEMISTRY), ALUMINUM COMPOUNDS, NEUTRAL, THESES, CHLORIDES, VOLTAMMETRY, HYDROXIDES, ALUMINATES, BINARY COMPOUNDS.

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE