期刊
JOURNAL OF CHEMICAL AND ENGINEERING DATA
卷 61, 期 6, 页码 2155-2159出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jced.6b00106
关键词
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资金
- National Natural Science Foundation of China [51376182, 41276043]
- CAS Program [KGZD-EW-301]
- 863 Program [2012AA061403-03]
Dissociation temperatures of mixed tetrabutylammonium bromide (TBAB) + tetrabutylammonium chloride (TBAC) semiclathrate hydrates were determined by using the DSC technique. The system was measured in five groups with a fixed total mole fraction (x = 0.0100, 0.0200, and 0.0337), TBAB mole fraction (x(TBAB) = 0.0370) or TBAC mole fraction (x(TBAC) = 0.0337). The obtained results demonstrated that at a given x, the dissociation temperatures of mixed (TBAB + TBAC) semiclathrate hydrates were all higher than that of pure TBAB hydrate, and the maximum dissociation temperature appeared at x(TBAB)/x = 0.25 instead of x(TBAB)/x = 0 or 1 (corresponding to pure TBAC or TBAB hydrate). In addition, for systems with fixed x(TBAB) or x(TBAC), TBAC gained the control of forming TBAC semiclathrate hydrate preferentially.
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