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Site-Specific CO2 Adsorption and Zero Thermal Expansion in an Anisotropic Pore Network



Wendy Queen, Craig M. Brown, David K. Britt, Matthew R. Hudson, Omar M. Yaghi


Detailed neutron powder diffraction (NPD) experiments were carried out on the bare and CO2 adsorbed Mg-MOF 74. While low-temperature data revealed two CO2 adsorption sites and multiple changes in the framework as a function of CO2 loading, room temperature data revealed minimal changes in unit cell volumes with adsorption up to 1.0 CO2/Mg (≅ 27 mass fraction, wt %). Further, temperature dependent data collected on the bare framework reveals zero thermal expansion over a wide range of temperatures, 10 K to 475 K.
Journal of Physical Chemistry C


Metal-organic framework, gas adsorption, carbon dioxide, zero thermal expansion, neutron diffraction


Queen, W. , Brown, C. , , D. , Hudson, M. and , O. (2011), Site-Specific CO<sub>2</sub> Adsorption and Zero Thermal Expansion in an Anisotropic Pore Network, Journal of Physical Chemistry C, [online], (Accessed February 24, 2024)
Created November 8, 2011, Updated February 19, 2017