A Porous Metal-Organic Framework with an Elongated Anthracene Derivative Exhibiting a High Working Capacity for the Storage of Methane

Published

July 1, 2014

Author(s)

Hui-Min Wen, Bin Li, Hailong Wang, Taner N. Yildirim, Wei Zhou, Banglin Chen

Abstract

We have realized a new porous metal-organic framework UTSA-80a with a elongated anthracene derivative as a linker, exhibiting higher pore volume of 1.03 cm³/g and gravimetric BET surface are of ca. 2280 m²/g than those of PCN-14. The volumetric methane storage capacity of UTSA-80a at 35 bar and 298 K is 192 cm³ (STP) cm^-3, which is among those of the few porous MOFs whose storage capacities are higher than 190 cm³ (STP) cm^-3 at 35 bar. Futhermore, its volumetric methane uptake reaches 233 cm³ (STP) cm^-3 at room temperature and 65 bar, which achieves 88.6% of the new DOE volumetric target, if the packing density lost is ignored. This capacity is comparable to that of PCN-14. However, thanks to the lower methane uptake in UTSA-80a at 5 bar, it has much higher methane storage working capacity of 174 cm³ (STP) cm^-3 than 157-160 cm³ (STP) cm^-3 in PCN-14 (65 bar to 5 bar). This value is slightly lower than 190 cm³ (STP) cm^-3 in HKUST-1, featuring it as a very promising material for methane storage for transport applications. Such exceptionally high working capacity is likely attributed to the elongated anthracene derivative as a linker within UTSA-80a, which adjusts the suitable pore sizes/cages and interactions with methane molecules to optimize the methane working capacity.

Citation

Journal of Materials Chemistry A

Volume

2

Pub Type

Journals

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Keywords

Metal-Organic Framework, Methane Storage

Citation

Wen, H. , Li, B. , Wang, H. , Yildirim, T. , Zhou, W. and Chen, B. (2014), A Porous Metal-Organic Framework with an Elongated Anthracene Derivative Exhibiting a High Working Capacity for the Storage of Methane, Journal of Materials Chemistry A, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916086 (Accessed April 29, 2024)