Saturation of hydrogen sorption in Zn benzenedicarboxylate and Zn naphthalenedicarboxylate.
We report excess hydrogen saturation values from high-pressure isotherms of metal organic framework structures taken at 77 K. Zn benzendicarboxylate (IRMOF-1) and Zn naphthalendicarboxylate (IRMOF-8) linker structures show identical saturation values of 137 hydrogen molecules on a per unit cell basis, despite the higher sorption potential of IRMOF-8 of 6.1 kJ/mol over that of IRMOF-1 of 4.1 kJ/mol. Charge transfer between linker and vertex, as well as surface area, appear to dominate the sorption behavior, over that of linker length in these two systems.
Division of Engineering and Applied Science, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA.
Anne
A
Dailly
John J
JJ
Vajo
Channing C
CC
Ahn
D000327:Adsorption; D006859:Hydrogen / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D011312:Pressure; D013499:Surface Properties; D015032:Zinc / Q000737:chemistry*
D009942:Organometallic Compounds; C512711:zinc benzenedicarboxylate; C512712:zinc naphthalenedicarboxylate; D006859:Hydrogen; D015032:Zinc