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Development of Potential Organic-Molecule-Based Hydrogen Storage Materials: Converting C-N Bond-Breaking Thermolysis of Guanidine to N-H Bond-Breaking Dehydrogenation

Published

Author(s)

Xiuquan Zhou, Wei Zhou, Terrence J. Udovic, Taner N. Yildirim, John J. Rush, Efrain E. Rodriguez, Hui Wu

Abstract

The small organic molecule guanidine CN3H5 can be anionized via a facile reaction with alkali-metal hydrides or amides with the formation of metal guanidinates (MCN3H4) and their guanidine adducts. They crystal structures and thermal decomposition properties of these organic-molecule-based complex hydrides were carefully investigated. Through metallation, MCN3H4 can completely preserve carbon atoms in the system and exhibit a largely improved thermal decomposition compared to CN3H5 regarding the extent of C-N bond breaking. By pairing H+ in CN3H5 with H- from metal hydrides, the resulting composite can further reduce ammonia libration and promote an endothermic dehydrogenation.
Citation
International Journal of Hydrogen Energy
Volume
41

Keywords

crystal structure determination, endothermic dehydrogenation, guanidine, hydrogen storage, metal guanidinates, neutron vibrational spectroscopy, x-ray diffraction

Citation

Zhou, X. , Zhou, W. , Udovic, T. , Yildirim, T. , Rush, J. , Rodriguez, E. and Wu, H. (2016), Development of Potential Organic-Molecule-Based Hydrogen Storage Materials: Converting C-N Bond-Breaking Thermolysis of Guanidine to N-H Bond-Breaking Dehydrogenation, International Journal of Hydrogen Energy, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=920272 (Accessed May 29, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created September 7, 2016, Updated October 12, 2021