✦ LIBER ✦

The heterogeneous distribution of the liquid phase in partially filled porous glasses and its effect on self-diffusion

✍ Scribed by German Farrher; Ioan Ardelean; Rainer Kimmich

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 157 KB
Volume: 25
Category: Article
ISSN: 0730-725X
DOI: 10.1016/j.mri.2006.11.006

No coin nor oath required. For personal study only.

✦ Synopsis

The spatial distribution of the liquid phase in a typical, partially filled, porous glass (VitraPor #5) has been examined with the aid of magnetic resonance microscopy and field gradient nuclear magnetic resonance diffusometry techniques. The correlation length of the material turned out to be long enough to permit the visualization of the microscopic heterogeneity of the material by magnetic resonance imaging. Contrasts are dominated by transverse relaxation depending on local filling degree, which in turn depends on local microstructure. The bimodal heterogeneity of the latter was also visualized by scanning electron microscopy. The effect of heterogeneity on an effective diffusion coefficient has been examined for polar (water) and nonpolar (cyclohexane) molecules.

📜 SIMILAR VOLUMES

Effects of pore size distribution and fi

Effects of pore size distribution and fiber diameter on the coupled heat and liquid moisture transfer in porous textiles

✍ Qingyong Zhu; Yi Li 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 585 KB

The pore size distribution and the fiber diameter on the coupled heat and liquid moisture transfer in porous textiles are investigated to reveal the mechanisms of the coupling effects. This paper focuses on a theoretical investigation of the coupling mechanism of heat transfer and liquid moisture di

Local organization of water and its effe

Local organization of water and its effect on the structural heterogeneities in room-temperature ionic liquid/H2O mixtures

✍ B. Fazio; A. Triolo; G. Di Marco 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 485 KB 👁 2 views

## Abstract Fourier‐transform infrared and Raman spectroscopies have been used to investigate the role played by water on the structural organization of 1‐butyl‐3‐methyl‐imidazolium tetrafluoroborate and H~2~O mixtures, over a wide composition range at room temperature. Our measurements provide cle

The distribution of solvent in an unstir

The distribution of solvent in an unstirred melt under the conditions of crystal growth by liquid epitaxy and its effect on the rate of growth

✍ M.B. Small; J.F. Barnes 📂 Article 📅 1969 🏛 Elsevier Science 🌐 English ⚖ 244 KB

Liquid-Phase Resistance to Mass Transfer

Liquid-Phase Resistance to Mass Transfer in a Laboratory Absorption Column Packed with Glass and Polytetrafluoroethylene Rings: Part I. The Effects of Flowrate Sequence, Repacking, Packing Depth and Initial Liquid Distribution

✍ R.J. Mangers; A.B. Ponter 📂 Article 📅 1980 🏛 Elsevier Science ⚖ 681 KB

Phase distribution in eutectic AuSn laye

Phase distribution in eutectic AuSn layer changed by temperature ramping rate and its effect on the performance of GaN-based vertical structure LEDs

✍ Pengfei Tian; Zhizhong Chen; Yongjian Sun; Shengli Qi; Huizhen Zhang; Junjing De 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 671 KB

The effect of concentration on the liqui

The effect of concentration on the liquid phase diffusivities in the binary systems carbon dioxide-oleic acid, carbon dioxide-methyl myristate and carbon dioxide-methyl palmitate at high pressures

✍ C.A. Lockemann; E.-U. Schlünder 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 538 KB