Indirect hydrolysis of sodium borohydride: Isolation and crystallographic characterization of methanolysis and hydrolysis by-products

Indirect hydrolysis of sodium borohydride: Isolation and crystallographic characterization of methanolysis and hydrolysis by-products

The use of sodium borohydride as a means for hydrogen generation has focused on the base-stabilized hydrolysis reaction, while literature for the methanolysis of sodium borohydride remains scarce. Sodium borohydride methanolysis is an alternative for hydrogen production from sodium borohydride and h...

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Bibliographic Details
Published in:International journal of hydrogen energy Vol. 38; no. 14; pp. 5775 - 5782
Main Authors: Huynh, Keith, Napolitano, Krizia, Wang, Ruiyao, Jessop, Philip G., Davis, Boyd R.
Format: Journal Article
Language:English
Published: Kidlington Elsevier Ltd 10-05-2013
Elsevier
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Energy
Exact sciences and technology
Fuels
Hydrogen
Hydrogen generation
Methanolysis
Sodium borohydride
X-ray characterization
Sodium borohydride
Methanolysis
Hydrogen generation
X-ray characterization
Characterization
Hydrolysis
Hydrogen
Hydroborates
Hydrogen production
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Summary:The use of sodium borohydride as a means for hydrogen generation has focused on the base-stabilized hydrolysis reaction, while literature for the methanolysis of sodium borohydride remains scarce. Sodium borohydride methanolysis is an alternative for hydrogen production from sodium borohydride and has a number of advantages over hydrolysis reactions in terms of by-product handling. Previous studies have shown that the presence of water in methanol significantly retards the rate of hydrogen evolution from NaBH4. This article reports the production of hydrogen from NaBH4 using rigorously dried methanol. In addition, the solid-state structure of the methanolysis by-product is reported, which lends pertinent information for its hydrolysis for methanol recovery. Also reported is the solid-state structure of the hydrolysis by-product. [Display omitted] •Hydrogen generation was achieved through methanolysis of NaBH4 using rigorously dried methanol.•The methanolysis by-product was determined, by single-crystal X-ray diffraction analysis, to be [Na2(B(OCH3)4)2(CH3OH)2]4.•Hydrolysis of the NaBH4 methanolysis by-product releases trapped methanol.•The hydrolysis by-product was determined by crystallography to be Na2[B4O5(OH)4]·8/3H2O.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2013.03.011