On the local structure of Ti during in situ desorption of Ti(OBu)(4) and TiCl3 doped NaAlH4

Cornelis P. Balde; Ad M. J. van der Eerden; Hans A. Stil; Frank M. F. de Groot; Krijn P. de Jong; Johannes H. Bitter

doi:10.1016/j.jallcom.2006.12.009

On the local structure of Ti during in situ desorption of Ti(OBu)(4) and TiCl3 doped NaAlH4

Cornelis P. Balde, Ad M. J. van der Eerden, Hans A. Stil, Frank M. F. de Groot, Krijn P. de Jong, Johannes H. Bitter^*

^*Corresponding author for this work

Sub Inorganic Chemistry and Catalysis

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

Abstract

The local structures of Ti doped NaAlH4 were investigated with extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) using Ti(OBU)(4) and TiCl3 precursors. The local structures were linked to literature data on hydrogen desorption and absorption kinetics. In the Ti(OBU)4 doped NaAlH4, butoxide or decomposition products thereof (C, 0 atoms) was bonded to Ti after ball-trulling, inhibiting the performance of the Ti catalyst. Upon heating, the C and 0 atoms were removed and Ti-Al species were formed. The thermodynamical most stable specie, TiAl3, was not formed at T<300 degrees C, contrarily to TiCl3 doped NaAlH4- Probably the initially present butoxide group gave rise to inhibition of its formation. Besides that, the butoxide or decompostion products thereof (C, 0 atoms) are also suspected to interfere with the hydrogen uptake of a desorbed NaAlH4. (C) 2006 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	232-236
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	446-447
DOIs	https://doi.org/10.1016/j.jallcom.2006.12.009
Publication status	Published - 31 Oct 2007
Event	10th International Symposium on Metal-Hydrogen Systems, Fundamentals and Applications - Lahaina, United Kingdom Duration: 1 Oct 2006 → 6 Oct 2006

Keywords

metal hydrides
EXAFS
XANES
sodium alanate
hydrogen storage
X-RAY-ABSORPTION
HYDROGEN STORAGE MATERIALS
SODIUM ALUMINUM-HYDRIDE
ALANATE
SPECTROSCOPY
CATALYST
XAFS

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title = "On the local structure of Ti during in situ desorption of Ti(OBu)(4) and TiCl3 doped NaAlH4",

abstract = "The local structures of Ti doped NaAlH4 were investigated with extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) using Ti(OBU)(4) and TiCl3 precursors. The local structures were linked to literature data on hydrogen desorption and absorption kinetics. In the Ti(OBU)4 doped NaAlH4, butoxide or decomposition products thereof (C, 0 atoms) was bonded to Ti after ball-trulling, inhibiting the performance of the Ti catalyst. Upon heating, the C and 0 atoms were removed and Ti-Al species were formed. The thermodynamical most stable specie, TiAl3, was not formed at T<300 degrees C, contrarily to TiCl3 doped NaAlH4- Probably the initially present butoxide group gave rise to inhibition of its formation. Besides that, the butoxide or decompostion products thereof (C, 0 atoms) are also suspected to interfere with the hydrogen uptake of a desorbed NaAlH4. (C) 2006 Elsevier B.V. All rights reserved.",

keywords = "metal hydrides, EXAFS, XANES, sodium alanate, hydrogen storage, X-RAY-ABSORPTION, HYDROGEN STORAGE MATERIALS, SODIUM ALUMINUM-HYDRIDE, ALANATE, SPECTROSCOPY, CATALYST, XAFS",

author = "Balde, {Cornelis P.} and {van der Eerden}, {Ad M. J.} and Stil, {Hans A.} and {de Groot}, {Frank M. F.} and {de Jong}, {Krijn P.} and Bitter, {Johannes H.}",

year = "2007",

month = oct,

day = "31",

doi = "10.1016/j.jallcom.2006.12.009",

language = "English",

volume = "446-447",

pages = "232--236",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier",

note = "10th International Symposium on Metal-Hydrogen Systems, Fundamentals and Applications ; Conference date: 01-10-2006 Through 06-10-2006",

}

TY - JOUR

T1 - On the local structure of Ti during in situ desorption of Ti(OBu)(4) and TiCl3 doped NaAlH4

AU - Balde, Cornelis P.

AU - van der Eerden, Ad M. J.

AU - Stil, Hans A.

AU - de Groot, Frank M. F.

AU - de Jong, Krijn P.

AU - Bitter, Johannes H.

PY - 2007/10/31

Y1 - 2007/10/31

N2 - The local structures of Ti doped NaAlH4 were investigated with extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) using Ti(OBU)(4) and TiCl3 precursors. The local structures were linked to literature data on hydrogen desorption and absorption kinetics. In the Ti(OBU)4 doped NaAlH4, butoxide or decomposition products thereof (C, 0 atoms) was bonded to Ti after ball-trulling, inhibiting the performance of the Ti catalyst. Upon heating, the C and 0 atoms were removed and Ti-Al species were formed. The thermodynamical most stable specie, TiAl3, was not formed at T<300 degrees C, contrarily to TiCl3 doped NaAlH4- Probably the initially present butoxide group gave rise to inhibition of its formation. Besides that, the butoxide or decompostion products thereof (C, 0 atoms) are also suspected to interfere with the hydrogen uptake of a desorbed NaAlH4. (C) 2006 Elsevier B.V. All rights reserved.

AB - The local structures of Ti doped NaAlH4 were investigated with extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) using Ti(OBU)(4) and TiCl3 precursors. The local structures were linked to literature data on hydrogen desorption and absorption kinetics. In the Ti(OBU)4 doped NaAlH4, butoxide or decomposition products thereof (C, 0 atoms) was bonded to Ti after ball-trulling, inhibiting the performance of the Ti catalyst. Upon heating, the C and 0 atoms were removed and Ti-Al species were formed. The thermodynamical most stable specie, TiAl3, was not formed at T<300 degrees C, contrarily to TiCl3 doped NaAlH4- Probably the initially present butoxide group gave rise to inhibition of its formation. Besides that, the butoxide or decompostion products thereof (C, 0 atoms) are also suspected to interfere with the hydrogen uptake of a desorbed NaAlH4. (C) 2006 Elsevier B.V. All rights reserved.

KW - metal hydrides

KW - EXAFS

KW - XANES

KW - sodium alanate

KW - hydrogen storage

KW - X-RAY-ABSORPTION

KW - HYDROGEN STORAGE MATERIALS

KW - SODIUM ALUMINUM-HYDRIDE

KW - ALANATE

KW - SPECTROSCOPY

KW - CATALYST

KW - XAFS

U2 - 10.1016/j.jallcom.2006.12.009

DO - 10.1016/j.jallcom.2006.12.009

M3 - Article

SN - 0925-8388

VL - 446-447

SP - 232

EP - 236

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

T2 - 10th International Symposium on Metal-Hydrogen Systems, Fundamentals and Applications

Y2 - 1 October 2006 through 6 October 2006

ER -

On the local structure of Ti during in situ desorption of Ti(OBu)(4) and TiCl3 doped NaAlH4

Abstract

Keywords

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