Diverting the phase transition behaviour of adipic acid via mesoporous silica confinement

ISL OpenIR > 青海盐湖研究所知识仓储

	Diverting the phase transition behaviour of adipic acid via mesoporous silica confinement
	Liu, Shang 1,2; Ma, Guixiang 1,2; Xie, Shaolei1 ; Jia, Yongzhong1 ; Sun, Jinhe1 ; Jing, Yan1
	2016
发表期刊	RSC Advances
卷号	6 期号:113 页码:111787-111796
摘要	Manipulating the phase transition behaviour of phase change materials (PCMs) to a favorable range is an urgent issue which poses a considerable challenge to their widespread application, since PCMs with desirable operational temperatures and high efficiency are very few in practice. An attempt to address this puzzle is presented by confining adipic acid in silica scaffolds through an impregnation method. Three different nanoscale chambers - 2D-hexagonal silicas MCM-41 and SBA-15, and 3D-silica mesoporous foam (MCF) - were employed. In this way, novel form-stable PCMs were developed, which acquired size-dependent thermal behaviour. The evolution of thermal behaviour as a function of pore size was investigated. Phase transition temperature (T-m) deviations presented a strong linear relationship with inverse pore sizes, conforming to the modified Gibbs-Thomson equation. Enthalpy changes (Delta H-m) shared the same trend with T-m, as pore sizes decreased, while the variation of phase transition temperatures (Delta T-m) was in the opposite direction. Unlike the bulk state, the phase transition temperature of adipic acid in a confined space could be regulated over 90 degrees C. The maximum thermal storage efficiency was 72% with respect to the confined acid content. Thus, the solid-liquid phase transition behaviour of adipic acid in a confined space could be altered, and the manipulation of thermal behaviour was achieved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6174
专题	青海盐湖研究所知识仓储盐湖资源综合利用工程技术中心
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Shang,Ma, Guixiang,Xie, Shaolei,et al. Diverting the phase transition behaviour of adipic acid via mesoporous silica confinement[J]. RSC Advances,2016,6(113):111787-111796.
APA	Liu, Shang,Ma, Guixiang,Xie, Shaolei,Jia, Yongzhong,Sun, Jinhe,&Jing, Yan.(2016).Diverting the phase transition behaviour of adipic acid via mesoporous silica confinement.RSC Advances,6(113),111787-111796.
MLA	Liu, Shang,et al."Diverting the phase transition behaviour of adipic acid via mesoporous silica confinement".RSC Advances 6.113(2016):111787-111796.