Phase behaviour and conductivity study of electrolytes in supercritical hydrofluorocarbons.
Phase behaviour and conductivity study of electrolytes in supercritical hydrofluorocarbons.
复制标题
超临界氢氟碳化合物中电解质的相行为和电导率研究。
DOI:
10.1039/c0cp01202e
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Bartlett PN
中科院分区:
文献类型:
--
作者:
Bartlett PN
The purpose of this work was to characterise supercritical hydrofluorocarbons (HFC) that can be used as solvents for electrodeposition. The phase behaviour of CHF3, CH2F2, and CH2FCF3 containing [NBun4][BF4], [NBun4][B{3,5-C6H3(CF3)2}4] and Na[B{3,5-C6H3(CF3)2}4] was studied and the conditions for forming a single supercritical phase established. Although all three HFCs are good solvents for [NBun4][BF4] the results show that the CH2F2 system has the lowest pr for dissolving a given amount of [NBun4][BF4]. The solubility of Na[B{3,5-C6H3(CF3)2}4] in CH2F2 was found to be unexpectedly high. Studies of the phase behaviour of CH2F2 containing [NBun4][BF4] and [Cu(CH3CN)4][BF4] showed that the copper complex was unstable in the absence of CH3CN. For CHF3, [Cu(hfac)2] was more soluble and more stable than [Cu(CH3CN)4][BF4] and only increased the phase-separation pressure by a moderate amount. Studies of the conductivity of [NBun4][B(C6F5)4], [NBun4][B{3,5-C6H3(CF3)2}4], [NRfBun3][B{3,5-C6H3(CF3)2}4] (Rf = (CH2)3C7F15), and Na[B{3,5-C6H3(CF3)2}4] were carried out in scCH2F2. The results show that these salts are more conducting than [NBun4][BF4] under the same conditions although the increase is much less significant than that reported in previous work in supercritical CO2 + CH3CN. Consequently, either [NBun4][BF4] or the corresponding BARF salts would be suitable background electrolytes for electrodeposition from scCH2F2.
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影响因子:
5.4
作者:
D. Goldfarb;H. Corti
通讯作者:
H. Corti
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
Klementina Fukné;A. König;Ž. Knez;M. Škerget
通讯作者:
M. Škerget
影响因子:
7.4
作者:
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通讯作者:
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影响因子:
3.9
作者:
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通讯作者:
A. Shadrin;V. Kamachev;A. Murzin;D. Shafikov
影响因子:
8.8
作者:
A. Abbott;C. Eardley;R. Tooth
通讯作者:
R. Tooth