TY - JOUR
T1 - Hydrogen generation from deliquescence of ammonia borane using Ni-Co/r-GO catalyst
AU - Chou, Chang Chen
AU - Chen, Bing Hung
N1 - Funding Information:
The authors gratefully acknowledge financial support from the Ministry of Science and Technology of Taiwan through the Grant MOST 102-2221-E-006 -286 -MY2 .
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015/6/2
Y1 - 2015/6/2
N2 - Hydrogen generation from the catalyzed deliquescence/hydrolysis of ammonia borane (AB) using the Ni-Co catalyst supported on the graphene oxide (Ni-Co/r-GO catalyst) under the conditions of limited water supply was studied with the molar feed ratio of water to ammonia borane (denoted as H2O/AB) at 2.02, 3.97 and 5.93, respectively. The conversion efficiency of ammonia borane to hydrogen was estimated both from the cumulative volume of the hydrogen gas generated and the conversion of boron chemistry in the hydrolysates analyzed by the solid-state 11B NMR. The conversion efficiency of ammonia borane could reach nearly 100% under excess water dosage, that is, H2O/AB = 3.97 and 5.93. Notably, the hydrogen storage capacity could reach as high as 6.5 wt.% in the case with H2O/AB = 2.02. The hydrolysates of ammonia borane in the presence of Ni-Co/r-GO catalyst were mainly the mixture of boric acid and metaborate according to XRD, FT-IR and solid-state 11B NMR analyses.
AB - Hydrogen generation from the catalyzed deliquescence/hydrolysis of ammonia borane (AB) using the Ni-Co catalyst supported on the graphene oxide (Ni-Co/r-GO catalyst) under the conditions of limited water supply was studied with the molar feed ratio of water to ammonia borane (denoted as H2O/AB) at 2.02, 3.97 and 5.93, respectively. The conversion efficiency of ammonia borane to hydrogen was estimated both from the cumulative volume of the hydrogen gas generated and the conversion of boron chemistry in the hydrolysates analyzed by the solid-state 11B NMR. The conversion efficiency of ammonia borane could reach nearly 100% under excess water dosage, that is, H2O/AB = 3.97 and 5.93. Notably, the hydrogen storage capacity could reach as high as 6.5 wt.% in the case with H2O/AB = 2.02. The hydrolysates of ammonia borane in the presence of Ni-Co/r-GO catalyst were mainly the mixture of boric acid and metaborate according to XRD, FT-IR and solid-state 11B NMR analyses.
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U2 - 10.1016/j.jpowsour.2015.05.091
DO - 10.1016/j.jpowsour.2015.05.091
M3 - Article
AN - SCOPUS:84930194938
VL - 293
SP - 343
EP - 350
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -
