Effect of TiF3 on the hydrogen desorption property of Mg95Ni5 by hydriding combustion synthesis

Hao Cai; Hao Gu; Yunfeng Zhu; Liquan Li

Effect of TiF₃ on the hydrogen desorption property of Mg₉₅Ni₅ by hydriding combustion synthesis

Hao Cai, Hao Gu, Yunfeng Zhu, Liquan Li

College of Materials Science and Engineering

Nanjing Tech University

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

5 Scopus citations

Abstract

Effect of TiF₃ addition as the catalyst on the hydrogen desorption property of Mg₉₅Ni₅ composites by hydriding combustion synthesis (HCS) was investigated. Addition of 1% TiF₃ (molar fraction) can get the best hydrogen desorption property for Mg₉₅Ni₅ mechanically milled for 10 h, which could desorb 5.20% (mass fraction) of H₂ in 1800 s at 523 K. The apparent activation energy of hydrogen desorption for Mg₉₅Ni₅+1%TiF₃ milled for 10 h was decreased to 86 kJ/mol from 124 kJ/mol of Mg₉₅Ni₅. Results show that catalytic effect of TiF₃ could be attributed to the formation of MgF₂ and Tix+ hydrides which destabilize the bonding of Mg-H.

Original language	English
Pages (from-to)	50-54
Number of pages	5
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	39
Issue number	1
State	Published - Jan 2010

Keywords

Catalytic effect
Hydrogen desorption property
TiF

Cite this

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abstract = "Effect of TiF3 addition as the catalyst on the hydrogen desorption property of Mg95Ni5 composites by hydriding combustion synthesis (HCS) was investigated. Addition of 1% TiF3 (molar fraction) can get the best hydrogen desorption property for Mg95Ni5 mechanically milled for 10 h, which could desorb 5.20% (mass fraction) of H2 in 1800 s at 523 K. The apparent activation energy of hydrogen desorption for Mg95Ni5+1%TiF3 milled for 10 h was decreased to 86 kJ/mol from 124 kJ/mol of Mg95Ni5. Results show that catalytic effect of TiF3 could be attributed to the formation of MgF2 and Tix+ hydrides which destabilize the bonding of Mg-H.",

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T1 - Effect of TiF3 on the hydrogen desorption property of Mg95Ni5 by hydriding combustion synthesis

AU - Cai, Hao

AU - Gu, Hao

AU - Zhu, Yunfeng

AU - Li, Liquan

PY - 2010/1

Y1 - 2010/1

N2 - Effect of TiF3 addition as the catalyst on the hydrogen desorption property of Mg95Ni5 composites by hydriding combustion synthesis (HCS) was investigated. Addition of 1% TiF3 (molar fraction) can get the best hydrogen desorption property for Mg95Ni5 mechanically milled for 10 h, which could desorb 5.20% (mass fraction) of H2 in 1800 s at 523 K. The apparent activation energy of hydrogen desorption for Mg95Ni5+1%TiF3 milled for 10 h was decreased to 86 kJ/mol from 124 kJ/mol of Mg95Ni5. Results show that catalytic effect of TiF3 could be attributed to the formation of MgF2 and Tix+ hydrides which destabilize the bonding of Mg-H.

AB - Effect of TiF3 addition as the catalyst on the hydrogen desorption property of Mg95Ni5 composites by hydriding combustion synthesis (HCS) was investigated. Addition of 1% TiF3 (molar fraction) can get the best hydrogen desorption property for Mg95Ni5 mechanically milled for 10 h, which could desorb 5.20% (mass fraction) of H2 in 1800 s at 523 K. The apparent activation energy of hydrogen desorption for Mg95Ni5+1%TiF3 milled for 10 h was decreased to 86 kJ/mol from 124 kJ/mol of Mg95Ni5. Results show that catalytic effect of TiF3 could be attributed to the formation of MgF2 and Tix+ hydrides which destabilize the bonding of Mg-H.

KW - Catalytic effect

KW - Hydrogen desorption property

KW - TiF

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JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

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ER -

Effect of TiF₃ on the hydrogen desorption property of Mg₉₅Ni₅ by hydriding combustion synthesis

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Keywords

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