Unusual phase behavior of decane-dodecane mixtures confined in SBA-15:Size effect on binary phase diagram  

作　　者：Hai Rong Pei Xiao Yan Xiao Zheng Lan 

机构地区：[1]College of Chemistry and Materials Science,Shandong Agriculture University,Taian 271018,China

出　　处：《Chinese Chemical Letters》2012年第10期1173-1176,共4页中国化学快报（英文版）

基　　金：support from The Natural Science Foundation of Shandong Province,China(No ZR2010BM035);National Natural Science Foundation of China(No21273138)

摘　　要：Phase behavior of normal decane-dodecane （n-CloH2/-CI2H26, Clo-C12） system confined in SBA-15 （Santa Barbara Amorphous, pore diameters 3.8, 7.8, and 17.2 nm） has been studied by using differential scanning calorimetry. It has been found solid-liquid phase diagram of the C10-C12/SBA-15 system is composed of a straight line （3.8 nm）, a curve （7.8 nm） and a loop line （17.2 nm）. The growth of the phase diagram clearly shows the size effect on phase behavior of binary alkanes. Phase behavior has been compared among the systems C10H22-CI2H26]SBA-15, C12H26-C14H3o/SBA-15 and C14H30-C16H34/SBA-15.Phase behavior of normal decane-dodecane （n-CloH2/-CI2H26, Clo-C12） system confined in SBA-15 （Santa Barbara Amorphous, pore diameters 3.8, 7.8, and 17.2 nm） has been studied by using differential scanning calorimetry. It has been found solid-liquid phase diagram of the C10-C12/SBA-15 system is composed of a straight line （3.8 nm）, a curve （7.8 nm） and a loop line （17.2 nm）. The growth of the phase diagram clearly shows the size effect on phase behavior of binary alkanes. Phase behavior has been compared among the systems C10H22-CI2H26]SBA-15, C12H26-C14H3o/SBA-15 and C14H30-C16H34/SBA-15.

关 键 词：Phase behavior CONFINEMENT SBA-15 Decane–dodecane system 

分 类 号：O643.36[理学—物理化学] O642[理学—化学]