skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Room temperature thermal conductivity measurements of neat MOF-5 compacts with high pressure hydrogen and helium

Abstract

Metal-organic frameworks (MOFs) are a highly porous crystalline material with potential in various applications including on-board vehicle hydrogen storage for fuel cell vehicles. The thermal conductivity of MOFs is an important parameter in the design and ultimate performance of an on-board hydrogen storage system. However, in-situ thermal conductivity measurements have not been previously reported. The present study reports room temperature thermal conductivity and thermal diffusivity measurements performed on neat MOF-5 cylindrical compacts (ρ = 0.4 g/mL) as a function of pressure (0.27–90 bar) and gas type (hydrogen and helium). The transient plane source technique was used to measure both the non-directional thermal properties (isotropic method) and the directional thermal properties (anisotropic method). High pressure measurements were made using our in-house built low-temperature, high pressure thermal conductivity sample cell. The intrinsic thermal properties of neat MOF-5 measured under vacuum were—Isotropic: kisotropic = 0.1319 W/m K, αisotropic = 0.4165 mm2/s; Anisotropic: kaxial = 0.1477 W/m K, kradial = 0.1218 W/m K, αaxial = 0.5096 mm2/s, and αradial = 0.4232 mm2/s. The apparent thermal properties of neat MOF-5 increased with increasing hydrogen and helium pressure, with the largest increase occurring in the narrow pressure range of 0–10 bar and then monotonically asymptoting withmore » increasing pressures up to around 90 bar. On average, a greater than two-fold enhancement in the apparent thermal properties was observed with neat MOF-5 in the presence of helium and hydrogen compared to the intrinsic values of neat MOF-5 measured under vacuum. The apparent thermal properties of neat MOF-5 measured with hydrogen were higher than those measured with helium, which were directly related to the gas-specific thermal properties of helium and hydrogen. Neat MOF-5 exhibited a small degree of anisotropy under all conditions measured with thermal conductivities and diffusivities in the axial direction being higher than those in the radial direction. As a result, the low temperature specific heat capacities of neat MOF-5 were also measured and reported for the temperature range of 93–313 K (–180–40 °C).« less

Authors:
ORCiD logo [1];  [2];  [3]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Ford Motor Co., Dearborn, MI (United States)
  3. ThermTest Inc., Fredericton, NB (Canada)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1358173
Alternate Identifier(s):
OSTI ID: 1359190
Report Number(s):
LA-UR-17-23122
Journal ID: ISSN 0360-3199
Grant/Contract Number:  
AC52-06NA25396; PS36-08GO98006
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
International Journal of Hydrogen Energy
Additional Journal Information:
Journal Volume: 41; Journal Issue: 8; Journal ID: ISSN 0360-3199
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; energy sciences; thermal conductivity; thermal diffusivity; MOF-5; high pressure; material properties; fuel cells; hydrogen; adsorbents; heat capacity; anisotropic; hydrogen storage

Citation Formats

Semelsberger, Troy Allen, Veenstra, Mike, and Dixon, Craig. Room temperature thermal conductivity measurements of neat MOF-5 compacts with high pressure hydrogen and helium. United States: N. p., 2016. Web. doi:10.1016/j.ijhydene.2015.12.059.
Semelsberger, Troy Allen, Veenstra, Mike, & Dixon, Craig. Room temperature thermal conductivity measurements of neat MOF-5 compacts with high pressure hydrogen and helium. United States. https://doi.org/10.1016/j.ijhydene.2015.12.059
Semelsberger, Troy Allen, Veenstra, Mike, and Dixon, Craig. 2016. "Room temperature thermal conductivity measurements of neat MOF-5 compacts with high pressure hydrogen and helium". United States. https://doi.org/10.1016/j.ijhydene.2015.12.059. https://www.osti.gov/servlets/purl/1358173.
@article{osti_1358173,
title = {Room temperature thermal conductivity measurements of neat MOF-5 compacts with high pressure hydrogen and helium},
author = {Semelsberger, Troy Allen and Veenstra, Mike and Dixon, Craig},
abstractNote = {Metal-organic frameworks (MOFs) are a highly porous crystalline material with potential in various applications including on-board vehicle hydrogen storage for fuel cell vehicles. The thermal conductivity of MOFs is an important parameter in the design and ultimate performance of an on-board hydrogen storage system. However, in-situ thermal conductivity measurements have not been previously reported. The present study reports room temperature thermal conductivity and thermal diffusivity measurements performed on neat MOF-5 cylindrical compacts (ρ = 0.4 g/mL) as a function of pressure (0.27–90 bar) and gas type (hydrogen and helium). The transient plane source technique was used to measure both the non-directional thermal properties (isotropic method) and the directional thermal properties (anisotropic method). High pressure measurements were made using our in-house built low-temperature, high pressure thermal conductivity sample cell. The intrinsic thermal properties of neat MOF-5 measured under vacuum were—Isotropic: kisotropic = 0.1319 W/m K, αisotropic = 0.4165 mm2/s; Anisotropic: kaxial = 0.1477 W/m K, kradial = 0.1218 W/m K, αaxial = 0.5096 mm2/s, and αradial = 0.4232 mm2/s. The apparent thermal properties of neat MOF-5 increased with increasing hydrogen and helium pressure, with the largest increase occurring in the narrow pressure range of 0–10 bar and then monotonically asymptoting with increasing pressures up to around 90 bar. On average, a greater than two-fold enhancement in the apparent thermal properties was observed with neat MOF-5 in the presence of helium and hydrogen compared to the intrinsic values of neat MOF-5 measured under vacuum. The apparent thermal properties of neat MOF-5 measured with hydrogen were higher than those measured with helium, which were directly related to the gas-specific thermal properties of helium and hydrogen. Neat MOF-5 exhibited a small degree of anisotropy under all conditions measured with thermal conductivities and diffusivities in the axial direction being higher than those in the radial direction. As a result, the low temperature specific heat capacities of neat MOF-5 were also measured and reported for the temperature range of 93–313 K (–180–40 °C).},
doi = {10.1016/j.ijhydene.2015.12.059},
url = {https://www.osti.gov/biblio/1358173}, journal = {International Journal of Hydrogen Energy},
issn = {0360-3199},
number = 8,
volume = 41,
place = {United States},
year = {Tue Feb 09 00:00:00 EST 2016},
month = {Tue Feb 09 00:00:00 EST 2016}
}

Journal Article:

Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Improved Hydrogen Storage and Thermal Conductivity in High-Density MOF-5 Composites
journal, September 2012


MOF-5 composites exhibiting improved thermal conductivity
journal, April 2012


Thermal conductivity of a metal-organic framework (MOF-5): Part II. Measurement
journal, February 2007


Modeling of adsorbent based hydrogen storage systems
journal, April 2012


Thermal management and desorption modeling of a cryo-adsorbent hydrogen storage system
journal, April 2013