Optimal Binding of Acetylene to a Nitro-Decorated Metal–Organic Framework
2018
Duong, Thien D. | Sapchenko, Sergey A. | da Silva, Ivan | Godfrey, Harry G. W. | Cheng, Yongqiang | Daemen, Luke L. | Manuel, Pascal | Ramirez-Cuesta, Anibal J. | Yang, Sihai | Schröder, Martin
We report the first example of crystallographic observation of acetylene binding to −NO₂ groups in a metal–organic framework (MOF). Functionalization of MFM-102 with −NO₂ groups on phenyl groups leads to a 15% reduction in BET surface area in MFM-102-NO₂. However, this is coupled to a 28% increase in acetylene adsorption to 192 cm³ g–¹ at 298 K and 1 bar, comparable to other leading porous materials. Neutron diffraction and inelastic scattering experiments reveal the role of −NO₂ groups, in cooperation with open metal sites, in the binding of acetylene in MFM-102-NO₂.
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