Phase behavior of undecane-tetradecane mixtures confined in SBA-15

Citation: Xiao Yan, Xiao-Zheng Lan. Phase behavior of undecane-tetradecane mixtures confined in SBA-15[J]. Chinese Chemical Letters, 2013, 24(10): 885-888. shu

Phase behavior of undecane-tetradecane mixtures confined in SBA-15

Xiao Yan ,
Xiao-Zheng Lan ^,

通讯作者: Xiao-Zheng Lan,

基金项目:
We thank the financial support from National Natural Science Foundation of China (No. 21273138) (No. 21273138)

ong Province, China (No. ZR2010BM035). (No. ZR2010BM035)

摘要: Phase behavior of undecane-tetradecane (n-C₁₁H₂₄-C₁₄H₃₀, C₁₁-C₁₄) mixtures in bulk and confined in SBA-15 have been studied using differential scanning calorimetry. The bulk C₁₁-C₁₄ system shows multiple phase regions due to rotator phase. Confined in the pores of SBA-15 (pore diameters 3.8-7.8 nm), the mixtures only show a melting boundary of a straight line and a curve, respectively. In SBA-15 (17.2 nm), phase behavior of themixtures has some similarity to that of the bulk. Under confinement, the phase diagrams of the mixtures vary with the pore size, temperature, and compositions.

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English

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