The thermal decomposition of ammonia borane

Hu, Mengnan; Geanangel, R. A.; Wendlandt, W.W.

doi:10.1016/0040-6031(78)85066-7

Cited by 276 publications

(193 citation statements)

References 17 publications

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“…Beyond induction period, 6-7 wt% gas is released. The literature provides the details of melting point of AB as 112-114°C and at this temperature 1 mol equivalent of gas is liberated [20].…”

Section: Isothermal Decompositionmentioning

confidence: 99%

Nano-nickel catalytic dehydrogenation of ammonia borane

Kumar¹,

Mangalvedekar²,

Mahajan

2014

Mater Renew Sustain Energy

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The complex chemical hydride, ammonia borane (NH 3 BH 3 , AB) is a hydrogen rich compound. It is a promising hydrogen source for applications using proton exchange membrane fuel cells (PEMFCs) due to hydrogen content. It has reasonably lower operating temperatures compared with other solid-state hydriding materials. At present, AB is an expensive disposable source which in its pure form releases 1 mol of hydrogen at around 110°C. This temperature is much higher than the operating temperature of PEMFC (*80°C). At the operating temperatures of the fuel cell, the slow kinetics of pure AB is a deterrent which provides enough scope for experimentation. The paper is the result of experimental thermolysis effort by using nano-nickel as a catalyst with pure AB. The neat and catalyzed AB isothermal decomposition and kinetic behavior are illustrated through the experimental results obtained under various conditions. The focus of experimentation is to increase the rate and extent of release of hydrogen at lower temperatures. The experimental results indicated that the use of nickel as catalyst reduced the induction period with significant improvement in hydrogen release compared with neat AB.

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Section: Isothermal Decompositionmentioning

confidence: 99%

Nano-nickel catalytic dehydrogenation of ammonia borane

Kumar¹,

Mangalvedekar²,

Mahajan

2014

Mater Renew Sustain Energy

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“…6.5 wt% mass loss [2,7,74,76,94]. Neat ammonia borane decomposes via a rapid uncontrollable process while evolving hydrogen contaminated with borazine and monomeric aminoborane [94].…”

Section: Thermal Decomposition Of Metal Amidoboranesmentioning

confidence: 99%

“…Sixty years after its first synthesis, ammonia borane is still the subject of intensive experimental and theoretical studies [1][2][3][4][6][7][8][9], and has been the subject of several reviews [10,11]. Ammonia borane has one of the highest gravimetrical hydrogen capacities (19.6 wt%) among all known chemical compounds [1].…”

Section: Introductionmentioning

confidence: 99%

Mono- and Bimetalic Amidoboranes

et al. 2016

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Abstract:In this review, we present an overview on metal amidoboranes, which have recently been considered as hydrogen storage materials for fueling of the low temperature fuel cells. We focus on amidoborane salts containing only metal cations and amidoborate anions. During the last decades, 19 new compounds from this group were described in the literature. We provide a summary of various physical and chemical properties of amidoborane compounds reported up to date.

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“…Among them, NH 3 BH 3 [1,2] and NaBH 4 [3,4] have attracted the most attention. Through pyrolysis, NH 3 BH 3 gives off 12 wt % hydrogen at 150 °C, but it suffers from low rates of H 2 release and the formation of the volatile impurity-borazine [5,6].…”

Section: Introductionmentioning

confidence: 99%

High-capacity hydrogen release through hydrolysis of NaB3H8

Huang

Chen

Yisgedu

et al. 2011

International Journal of Hydrogen Energy

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NaB3H8 has advantages over NaBH4 and NH3BH3, two most widely studied chemical hydrides for hydrogen storage via hydrolysis. NaB3H8 has an extraordinary high solubility in water and thus possesses a high theoretical capacity of 10.5 wt% H via hydrolysis, in contrast to 7.5 wt% for NaBH4 and 5.1 wt% for NH3BH3. NaB3H8 is reasonably stable in water which makes it unnecessary to add corrosive NaOH as a stabilizer as the case for NaBH4. Furthermore, hydrolysis of NaB3H8 can be catalyzed by a Co-based catalyst with fast kinetics that is comparable to Ru-based catalysts. Therefore, cost-effective hydrolysis of NaB3H8 is possible for practical applications. A high capacity of 7.4 wt% H was achieved when water was included in the materials weight. AbstractNaB 3 H 8 has advantages over NaBH 4 and NH 3 BH 3 , two most widely studied chemical hydrides for hydrogen storage via hydrolysis. NaB 3 H 8 has an extraordinary high solubility in water and thus possesses a high theoretical capacity of 10.5 wt % H via hydrolysis, in contrast to 7.5 wt % for NaBH 4 and 5.1 wt % for NH 3 BH 3 . NaB 3 H 8 is reasonably stable in water which makes it unnecessary to add corrosive NaOH as a stabilizer as the case for NaBH 4 . Furthermore, hydrolysis of NaB 3 H 8 can be catalyzed by a Co-based catalyst with fast kinetics that is comparable to Ru-based catalysts.Therefore, cost-effective hydrolysis of NaB 3 H 8 is possible for practical applications. A high capacity of 7.4 wt % H was achieved when water was included in the materials weight.

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The thermal decomposition of ammonia borane

Cited by 276 publications

References 17 publications

Nano-nickel catalytic dehydrogenation of ammonia borane

Nano-nickel catalytic dehydrogenation of ammonia borane

Mono- and Bimetalic Amidoboranes

High-capacity hydrogen release through hydrolysis of NaB3H8

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