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Zn-MOF Assisted Dehydrogenation of Ammonia Borane: Enhanced Kinetics and Clean Hydrogen Generation

Published

Author(s)

Gadipelli Srinivas, Jamie Ford, Wei Zhou, Taner Yildirim

Abstract

We report controllable and enhanced hydrogen release kinetics at reduced temperatures in ammonia borane (AB) catalyzed by Zn-MOF-74. AB is loaded into the unsaturated Zn-metal coordinated one-dimensional hexagonal open nanopores of MOF-74 (ABMOF) via solution infiltration. The ABMOF system provides clean hydrogen by suppressing the release of detrimental volatile byproducts such as ammonia, borazine and diborane. These byproducts prevent the direct use of AB as a hydrogen source for polymer electrolyte membrane fuel cell applications. The H2 release temperature, kinetics, and byproduct generation are dependent on the amount of AB loading. We show that nanoconfinement of AB and its interaction with the active Zn-metal centers in MOF are important in promoting efficient and clean hydrogen generation.
Citation
International Journal of Hydrogen Energy
Volume
37

Keywords

Ammonia borane, metal-organic framework, nanoconfinement, dehydrogenation kinetics, hydrogen storage

Citation

Srinivas, G. , , J. , Zhou, W. and Yildirim, T. (2012), Zn-MOF Assisted Dehydrogenation of Ammonia Borane: Enhanced Kinetics and Clean Hydrogen Generation, International Journal of Hydrogen Energy, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=907811 (Accessed April 14, 2024)
Created February 1, 2012, Updated February 19, 2017