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Issue 10, 2011
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Kinetic and thermodynamic investigation of hydrogen release from ethane 1,2-di-amineborane

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Abstract

The thermodynamics and kinetics of hydrogen (H2) release from ethane 1,2-di-amineborane (EDAB, BH3NH2CH2CH2NH2BH3) were measured using Calvet and differential scanning calorimetry (DSC), pressure-composition isotherms, and volumetric gas-burette experiments. The results presented here indicate that EDAB releases ∼ 10 wt.% H2 at temperatures ranging from 100 °C to 200 °C in two moderately exothermic steps, approximately −10 ± 1 kJ mol−1 H2 and −3.8 ± 1 kJ mol−1 H2. Isothermal kinetic analysis shows that EDAB is more stable than ammonia borane (AB) at temperatures lower than 100 °C; however, the rates of hydrogen release are faster for EDAB than for AB at temperatures higher than 120 °C. In addition, no volatile impurities in the H2 released by EDAB were detected by mass spectrometry upon heating with 1 °C min−1 to 200 °C in a calorimeter.

Graphical abstract: Kinetic and thermodynamic investigation of hydrogen release from ethane 1,2-di-amineborane

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Article information


Submitted
03 Jun 2011
Accepted
18 Jul 2011
First published
09 Aug 2011

Energy Environ. Sci., 2011,4, 4187-4193
Article type
Paper

Kinetic and thermodynamic investigation of hydrogen release from ethane 1,2-di-amineborane

D. Neiner, A. Karkamkar, M. Bowden, Y. Joon Choi, A. Luedtke, J. Holladay, A. Fisher, N. Szymczak and T. Autrey, Energy Environ. Sci., 2011, 4, 4187
DOI: 10.1039/C1EE01884A

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