Enhanced self-diffusion of adsorbed methanol in silica aerogel

Jeongseop A. Lee; A. M. Mounce; Sangwon Oh; A. M. Zimmerman; W. P. Halperin

首页> 外文期刊>Physical review >Enhanced self-diffusion of adsorbed methanol in silica aerogel

【24h】

Enhanced self-diffusion of adsorbed methanol in silica aerogel

机译：硅胶气凝胶中吸附的甲醇增强的自我扩散

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Molecular transport of a two-component system of liquid and vapor in a porous medium can be anomalously increased owing to fast exchange between the two phases [Phys. Rev. Lett. 63,43 (1989)]. We have investigated this phenomenon measuring the self-diffusion coefficient of methanol adsorbed in a 98% porosity aerogel using nuclear magnetic resonance field gradient techniques. We found enhancement of several orders of magnitude from which we determined the ballistic mean-free path in the vapor phase. We have grown globally uniform anisotropic aerogels and applied the diffusion measurements to characterize the anisotropy. Our results are important for understanding the novel properties of superfluid ~3He confined within an aerogel framework and for application to other physical systems.

机译：由于两相之间的快速交换，可以异常增加液体和蒸气在多孔介质中的两组分系统的分子传输。牧师63,43（1989）]。我们已经研究了使用核磁共振场梯度技术测量吸附在98％孔隙度气凝胶中的甲醇的自扩散系数的现象。我们发现增强了几个数量级，从中可以确定气相中的弹道平均自由程。我们已经在全球范围内生长出均匀的各向异性气凝胶，并通过扩散测量来表征各向异性。我们的结果对于理解局限于气凝胶框架的〜3He超流体的新颖性质以及应用于其他物理系统非常重要。

著录项

来源
《Physical review》 |2014年第17期|174501.1-174501.6|共6页
作者
Jeongseop A. Lee; A. M. Mounce; Sangwon Oh; A. M. Zimmerman; W. P. Halperin;
展开▼
作者单位

Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA;

Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA;

Schlumberger-Doll Research Center, Cambridge, Massachusetts 02139, USA;

Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA;

Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词

相似文献

外文文献
中文文献
专利

1. Diffusion of methanol-liquid CO2 and methanol-supercritical CO2 in silica aerogels [J] . Novak Z, Knez Z Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites . 1997,第2a3期

机译：硅胶气凝胶中甲醇-液体CO2和甲醇-超临界CO2的扩散
2. Helium-3 gas self-diffusion in a nematically ordered aerogel at low temperatures: enhanced role of adsorption [J] . Kuzmin Vyacheslav, Safiullin Kajum, Stanislavovas Andrey, Physical chemistry chemical physics: PCCP . 2017,第34期

机译：在低温下，氦气-3气体自扩散在低温下以肠道有序的气凝胶：吸附的增强作用
3. Enhancement of surface self-diffusion of platinum atoms by adsorbed hydrogen [J] . S. Horch, H. T. Lorensen, S. Helveg, Nature . 1999,第6723期

机译：吸附氢增强铂原子的表面自扩散
4. Low density TEOS based silica aerogels using methanol solvent [C] . Sharad D. Bhagat, Hiroshi Hirashima, A. Venkateswara Rao Annual Meeting of The Ceramic Society of Japan . 2005

机译：基于低密度TEOS的二氧化硅气凝胶使用甲醇溶剂
5. Chemistry in an inorganic-organic hybrid aerogel: Chitosan-silica aerogel. [D] . Liu, Xipeng. 2005

机译：无机-有机混合气凝胶中的化学：壳聚糖-二氧化硅气凝胶。
6. Carbon Fiber—Silica Aerogel Composite with Enhanced Structural and Mechanical Properties Based on Water Glass and Ambient Pressure Drying [O] . Agnieszka Ślosarczyk 2021

机译：碳纤维 - 二氧化硅气凝胶复合材料基于水玻璃和环境压力干燥增强的结构和机械性能
7. Properties of water adsorbed in porous silica aerogels [O] . A. da Silva, P. Donoso, M.A. Aegerter 1992

机译：吸附在多孔二氧化硅气凝胶中的水的性质

Enhanced self-diffusion of adsorbed methanol in silica aerogel

摘要

著录项

相似文献

相关主题

期刊订阅