Development of potential organic-molecule-based hydrogen storage materials: Converting C-N bond-breaking thermolysis of guanidine to N-H bond-breaking dehydrogenation

被引:6
|
作者
Zhou, Xiuquan [1 ]
Zhou, Wei [2 ]
Udovic, Terrence J. [2 ]
Yildirim, Taner [2 ]
Rush, John J. [2 ,3 ]
Rodriguez, Efrain E. [1 ]
Wu, Hui [2 ]
机构
[1] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA
[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[3] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA
关键词
Hydrogen storage; Endothermic dehydrogenation; Crystal structure determination; Guanidine; Metal guanidinates; CRYSTAL-CHEMISTRY; HYDRIDE; AMIDE; DESTABILIZATION; BOROHYDRIDE; SODIUM; FAMILY; LINH2; LIH;
D O I
10.1016/j.ijhydene.2016.08.129
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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. The 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 or MCN3H4 with H-from metal hydrides, the resulting composite can further reduce ammonia libration and promote an endothermic dehydrogenation. Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.
引用
收藏
页码:18542 / 18549
页数:8
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