Synthesis and decomposition of pure Ca(AlH4)2

Naoto Morisaku; Kenji Komiya; Yuzhan Li; Hiroshi Yukawa; Masahiko Morinaga; Kazutaka Ikeda; Shin Ichi Orimo

doi:10.4028/0-87849-463-4.869

Synthesis and decomposition of pure Ca(AlH₄)₂

Naoto Morisaku, Kenji Komiya, Yuzhan Li, Hiroshi Yukawa, Masahiko Morinaga, Kazutaka Ikeda, Shin Ichi Orimo

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

Pure Ca(AlH₄)₂ is synthesized and its decomposition reactions are investigated in a fundamental manner. The XRD profile observed is in good agreement with the one reported by Fichtner et al. From TDS measurements, Ca(AlH₄)₂ appears to decompose into CaH ₂+2Al+3H₂ in three steps. The peak temperature of the first reaction is about 470K which is higher than that for Mg(AlH ₄)₂ (about 450K), indicating that Ca(AlH₄) ₂ is more stable hydride than Mg(AlH₄)₂. In addition, the catalysis of TiCl₃ is doped into Ca(AlH ₄)₂ by ball milling under a hydrogen gas atmosphere and catalytic effects on the decomposition properties are investigated.

Original language	English
Pages (from-to)	869-872
Number of pages	4
Journal	Advanced Materials Research
Volume	24-25
DOIs	https://doi.org/10.4028/0-87849-463-4.869
Publication status	Published - 2007
Event	PRICM 6: The 6th Pacific Rim International Conference on Advanced Materials and Processing - Jeju Island, Korea, Republic of Duration: 2007 Nov 5 → 2007 Nov 9

Keywords

Calcium alanate
Complex hydrides
Hydrogen storage materials

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10.4028/0-87849-463-4.869

Cite this

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title = "Synthesis and decomposition of pure Ca(AlH4)2",

abstract = "Pure Ca(AlH4)2 is synthesized and its decomposition reactions are investigated in a fundamental manner. The XRD profile observed is in good agreement with the one reported by Fichtner et al. From TDS measurements, Ca(AlH4)2 appears to decompose into CaH 2+2Al+3H2 in three steps. The peak temperature of the first reaction is about 470K which is higher than that for Mg(AlH 4)2 (about 450K), indicating that Ca(AlH4) 2 is more stable hydride than Mg(AlH4)2. In addition, the catalysis of TiCl3 is doped into Ca(AlH 4)2 by ball milling under a hydrogen gas atmosphere and catalytic effects on the decomposition properties are investigated.",

keywords = "Calcium alanate, Complex hydrides, Hydrogen storage materials",

author = "Naoto Morisaku and Kenji Komiya and Yuzhan Li and Hiroshi Yukawa and Masahiko Morinaga and Kazutaka Ikeda and Orimo, {Shin Ichi}",

year = "2007",

doi = "10.4028/0-87849-463-4.869",

language = "English",

volume = "24-25",

pages = "869--872",

journal = "Advanced Materials Research",

issn = "1022-6680",

publisher = "Trans Tech Publications",

note = "PRICM 6: The 6th Pacific Rim International Conference on Advanced Materials and Processing ; Conference date: 05-11-2007 Through 09-11-2007",

}

TY - JOUR

T1 - Synthesis and decomposition of pure Ca(AlH4)2

AU - Morisaku, Naoto

AU - Komiya, Kenji

AU - Li, Yuzhan

AU - Yukawa, Hiroshi

AU - Morinaga, Masahiko

AU - Ikeda, Kazutaka

AU - Orimo, Shin Ichi

PY - 2007

Y1 - 2007

N2 - Pure Ca(AlH4)2 is synthesized and its decomposition reactions are investigated in a fundamental manner. The XRD profile observed is in good agreement with the one reported by Fichtner et al. From TDS measurements, Ca(AlH4)2 appears to decompose into CaH 2+2Al+3H2 in three steps. The peak temperature of the first reaction is about 470K which is higher than that for Mg(AlH 4)2 (about 450K), indicating that Ca(AlH4) 2 is more stable hydride than Mg(AlH4)2. In addition, the catalysis of TiCl3 is doped into Ca(AlH 4)2 by ball milling under a hydrogen gas atmosphere and catalytic effects on the decomposition properties are investigated.

AB - Pure Ca(AlH4)2 is synthesized and its decomposition reactions are investigated in a fundamental manner. The XRD profile observed is in good agreement with the one reported by Fichtner et al. From TDS measurements, Ca(AlH4)2 appears to decompose into CaH 2+2Al+3H2 in three steps. The peak temperature of the first reaction is about 470K which is higher than that for Mg(AlH 4)2 (about 450K), indicating that Ca(AlH4) 2 is more stable hydride than Mg(AlH4)2. In addition, the catalysis of TiCl3 is doped into Ca(AlH 4)2 by ball milling under a hydrogen gas atmosphere and catalytic effects on the decomposition properties are investigated.

KW - Calcium alanate

KW - Complex hydrides

KW - Hydrogen storage materials

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DO - 10.4028/0-87849-463-4.869

M3 - Conference article

AN - SCOPUS:57649096953

SN - 1022-6680

VL - 24-25

SP - 869

EP - 872

JO - Advanced Materials Research

JF - Advanced Materials Research

T2 - PRICM 6: The 6th Pacific Rim International Conference on Advanced Materials and Processing

Y2 - 5 November 2007 through 9 November 2007

ER -

Synthesis and decomposition of pure Ca(AlH₄)₂

Abstract

Keywords

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