A robust soc-MOF platform exhibiting high gravimetric uptake and volumetric deliverable capacity for on-board methane storage
Gaurav Verma, Sanjay Kumar, Harsh Vardhan, Junyu Ren, Zheng Niu, Tony Pham, Łukasz Wojtas, Sydney Butikofer, Jose C. Echeverria Garcia, Yu‐Sheng Chen, Brian Space, Shengqian Ma
Abstract
Emerging as an outperformed class of metal-organic frameworks (MOFs), square-octahedron (soc) topology MOFs (soc-MOFs) feature superior properties of high porosity, large gas storage capacity, and excellent thermal/chemical stability. We report here an iron based soc-MOF, denoted as Fe-pbpta (H4pbpta = 4,4′,4″,4‴-(1,4-phenylenbis(pyridine-4,2-6-triyl))-tetrabenzoic acid) possessing a very high Brunauer, Emmett and Teller (BET) surface area of 4,937 m2/g and a large pore volume of 2.15 cm3/g. The MOF demonstrates by far the highest gravimetric uptake of 369 cm3(STP)/g under the DOE operational storage conditions (35 bar and 298 K) and a high volumetric deliverable capacity of 192 cc/cc at 298 K and 65 bar. Furthermore, Fe-pbpta exhibits high thermal and aqueous stability making it a promising candidate for on-board methane storage.