Thermal and electrochemical properties of morpholinium salts with bromide anion

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The present work is a study of the thermal properties and electrochemical stabilities of N-ethyl-N-methyl-morpholinium bromide ([Mor(1.2)][Br]), N-butyl-N-methylmorpholinium bromide ([Mor(1.4)][Br]), N-butyl-N-methylmorpholinium bromide ([Mor(1.8])[Br]), N-dodecyl-N-methylmorpholinium bromide ([Mor(1,12)] [Br]), and N,N-dihydroxyethylmorpholinium bromide ([DHEMor][Br]). The melting points, decomposition temperatures, and electrochemical stabilities of the salts were measured by DSC (differential scanning calorimetry), TGA (thermogravimetric analysis), and CV (cyclic voltammogram), respectively. All salts were decomposed below approximately 230.00 degrees C and their melting points were above 100.00 degrees C except [DHEMor][Br], which melted at 75.17 degrees C. [DHEMor][Br] appeared to possess the most wide liquid-phase range between melting point and decomposition temperature. The electrochemical windows of salts ranged from 3.3 V for [Mor(1)(8)(.)][Br] to 3.6 V for [Mor(1.4)][Br] and thus did not show any noticeable variation with cations used for salt synthesis.
Publisher
KOREAN INST CHEM ENGINEERS
Issue Date
2005-11
Language
English
Article Type
Article
Keywords

TEMPERATURE IONIC LIQUIDS; MOLTEN-SALTS; ELECTROLYTES; SOLVENTS

Citation

KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.22, no.6, pp.945 - 948

ISSN
0256-1115
DOI
10.1007/BF02705680
URI
http://hdl.handle.net/10203/90987
Appears in Collection
CBE-Journal Papers(저널논문)
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