Hydrogen Storage Capacity of Tetrahydrofuran and Tetra-N-Butylammonium Bromide Hydrates Under Favorable Thermodynamic Conditions

作者：Weissman Joshua T; Masutani Stephen M^*

来源：Energies, 2017, 10(8): 1225.

DOI：10.3390/en10081225

• hydrate
• hydrogen storage
• THF
• TBAB
• calorimetry
• Raman

An experimental study was conducted to evaluate the feasibility of employing binary hydrates as a medium for H-2 storage. Two reagents, tetrahydrofuran (THF) and tetra-n-butylammonium bromide (TBAB), which had been reported previously to have potential to form binary hydrates with H-2 under favorable conditions (i.e., low pressures and high temperatures), were investigated using differential scanning calorimetry and Raman spectroscopy. A scale-up facility was employed to quantify the hydrogen storage capacity of THF binary hydrate. Gas chromatography (GC) and pressure drop analyses indicated that the weight percentages of H-2 in hydrate were less than 0.1%. The major conclusions of this investigation were: (1) H-2 can be stored in binary hydrates at relatively modest pressures and temperatures which are probably feasible for transportation applications; and (2) the storage capacity of H2 in binary hydrate formed from aqueous solutions of THF over a concentration range extending from 2.78 to 8.34 mol % and at temperatures above 263 K and pressures below 11MPa was <0.1 wt %.

• 出版日期2017-8