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.
Dailly
Anne
A
Division of Engineering and Applied Science, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA.
Vajo
John J
JJ
Ahn
Channing C
CC
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