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Electrical conductivity , differential scanning calorimetry , X-ray diffraction , and 7 Li nuclear magnetic resonance studies of nC x H ( 2 x + 1 ) OSO 3 Li
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hirakawa, Satoru Morimoto, Yoshiaki Honda, Hisashi |
| Copyright Year | 2014 |
| Abstract | Electrical conductivity (σ), differential scanning calorimetry (DSC), and X-ray diffraction (XRD) measurements of n-CxH(2x+1)OSO3Li (x = 12, 14, 16, 18, and 20) crystals were performed as a function of temperature. In addition, σ , DSC, and XRD observations of n-CxH(2x+1)OSO3Na and n-CxH(2x+1)OSO3K (x = 12, 14, 16, 18, and 20) crystals were carried out for comparison. DSC results of the salts revealed several solidsolid phase transitions with large entropy changes ( S). For n-C18H37OSO3Li and n-C20H41OSO3Li salts, each melting point produced a small Smp value compared with the total entropy change in the solid phases ( Str1 + Str2). Additionally, Li+ ion diffusion was detected in the highest temperature solid phases. For K salts, larger σ values were detected for potassium alkylsulfates compared with those reported for alkyl carboxylate. 7Li NMR spectra of n-C18H37OSO3Li crystals recorded in the low-temperature phase showed large asymmetry parameters, suggesting the Li+ ions are localized at asymmetric sites in the crystals. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://espace.cern.ch/ISOLDE-SSP/HFI/HFI20141/Preprint%20Hyperfine%20Interactions%20230%20(2015)%20101-113%20Hirakawa.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
