1. Carborane-BasedMetal–Organic Framework withHigh Methane and Hydrogen Storage Capacities.
- Author
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Kennedy, Robert D., Krungleviciute, Vaiva, Clingerman, Daniel J., Mondloch, Joseph E., Peng, Yang, Wilmer, Christopher E., Sarjeant, Amy A., Snurr, Randall Q., Hupp, Joseph T., Yildirim, Taner, Farha, Omar K., and Mirkin, Chad A.
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CARBORANES , *ORGANOMETALLIC compounds , *METHANE , *HYDROGEN storage , *COMPARATIVE studies , *POROUS materials - Abstract
A Cu–carborane-basedmetal–organic framework (MOF), NU-135, which containsa quasi-spherical para-carborane moiety, has beensynthesized and characterized. NU-135exhibits a porevolume of 1.02 cm3/g anda gravimetric BET surface area of ca. 2600 m2/g, and thusrepresents the first highly porous carborane-based MOF. As a consequenceof the unique geometry of the carborane unit, NU-135hasa very high volumetric BET surface area of ca. 1900 m2/cm3. CH4, CO2, and H2adsorptionisotherms were measured over a broad range of pressures and temperaturesand are in good agreement with computational predictions. The methanestorage capacity of NU-135at 35 bar and 298 K is ca.187 vSTP/v. At 298 K, the pressure required to achievea methane storage density comparable to that of a compressed naturalgas (CNG) tank pressurized to 212 bar, which is a typical storagepressure, is only 65 bar. The methane working capacity (5–65bar) is 170 vSTP/v. The volumetric hydrogen storage capacityat 55 bar and 77 K is 49 g/L. These properties are comparable to thoseof current record holders in the area of methane and hydrogen storage.This initial example lays the groundwork for carborane-based materialswith high surface areas. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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