Thermal Decomposition of anhydrous alkali metal dodecaborates M2B12H12 (M = Li, Na, K)

Liqing He; Hai Wen Li; Etsuo Akiba

doi:10.3390/en81112326

Thermal Decomposition of anhydrous alkali metal dodecaborates M₂B₁₂H₁₂ (M = Li, Na, K)

Liqing He, Hai Wen Li, Etsuo Akiba

Hydrogen Utilization Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Metal dodecaborates M_2/nB₁₂H₁₂ are regarded as the dehydrogenation intermediates of metal borohydrides M(BH₄)_n that are expected to be high density hydrogen storage materials. In this work, thermal decomposition processes of anhydrous alkali metal dodecaborates M₂B₁₂H₁₂ (M = Li, Na, K) synthesized by sintering of MBH₄ (M = Li, Na, K) and B₁₀H₁₄ have been systematically investigated in order to understand its role in the dehydrogenation of M(BH₄)_n. Thermal decomposition of M₂B₁₂H₁₂ indicates multistep pathways accompanying the formation of H-deficient monomers M₂B₁₂H_12-x containing the icosahedral B₁₂ skeletons and is followed by the formation of (M₂B₁₂H_z)_n polymers. The decomposition behaviors are different with the in situ formed M₂B₁₂H₁₂ during the dehydrogenation of metal borohydrides.

Original language	English
Pages (from-to)	12429-12438
Number of pages	10
Journal	Energies
Volume	8
Issue number	11
DOIs	https://doi.org/10.3390/en81112326
Publication status	Published - Nov 1 2015

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Energy (miscellaneous)
Control and Optimization
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.3390/en81112326

Cite this

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title = "Thermal Decomposition of anhydrous alkali metal dodecaborates M2B12H12 (M = Li, Na, K)",

abstract = "Metal dodecaborates M2/nB12H12 are regarded as the dehydrogenation intermediates of metal borohydrides M(BH4)n that are expected to be high density hydrogen storage materials. In this work, thermal decomposition processes of anhydrous alkali metal dodecaborates M2B12H12 (M = Li, Na, K) synthesized by sintering of MBH4 (M = Li, Na, K) and B10H14 have been systematically investigated in order to understand its role in the dehydrogenation of M(BH4)n. Thermal decomposition of M2B12H12 indicates multistep pathways accompanying the formation of H-deficient monomers M2B12H12-x containing the icosahedral B12 skeletons and is followed by the formation of (M2B12Hz)n polymers. The decomposition behaviors are different with the in situ formed M2B12H12 during the dehydrogenation of metal borohydrides.",

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Y1 - 2015/11/1

N2 - Metal dodecaborates M2/nB12H12 are regarded as the dehydrogenation intermediates of metal borohydrides M(BH4)n that are expected to be high density hydrogen storage materials. In this work, thermal decomposition processes of anhydrous alkali metal dodecaborates M2B12H12 (M = Li, Na, K) synthesized by sintering of MBH4 (M = Li, Na, K) and B10H14 have been systematically investigated in order to understand its role in the dehydrogenation of M(BH4)n. Thermal decomposition of M2B12H12 indicates multistep pathways accompanying the formation of H-deficient monomers M2B12H12-x containing the icosahedral B12 skeletons and is followed by the formation of (M2B12Hz)n polymers. The decomposition behaviors are different with the in situ formed M2B12H12 during the dehydrogenation of metal borohydrides.

AB - Metal dodecaborates M2/nB12H12 are regarded as the dehydrogenation intermediates of metal borohydrides M(BH4)n that are expected to be high density hydrogen storage materials. In this work, thermal decomposition processes of anhydrous alkali metal dodecaborates M2B12H12 (M = Li, Na, K) synthesized by sintering of MBH4 (M = Li, Na, K) and B10H14 have been systematically investigated in order to understand its role in the dehydrogenation of M(BH4)n. Thermal decomposition of M2B12H12 indicates multistep pathways accompanying the formation of H-deficient monomers M2B12H12-x containing the icosahedral B12 skeletons and is followed by the formation of (M2B12Hz)n polymers. The decomposition behaviors are different with the in situ formed M2B12H12 during the dehydrogenation of metal borohydrides.

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