Hydrogen generated from hydrolysis of ammonia borane using cobalt and ruthenium based catalysts

Liu, Cheng‐Hong; Wu, Yi-Chun; Chou, Chau-Chang; Chen, Bing‐Hung; Hsueh, Chan Li; Ku, Jie Ren; Tsau, Fang-Hei

doi:10.1016/j.ijhydene.2011.05.022

Cited by 64 publications

(33 citation statements)

References 22 publications

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“…One possibility would be to favor the liberation and trapping of NH 3 to recover only B(OH) 3 as the by- www.chemsuschem.org product. [69] Second, as reported by Stephens et al, it is important to devise a scheme, in which the boron center is not over-reduced to BH 4 À , but stops at BH 3 . [49] Nonetheless, there might be an advantage with the spent fuel of AB, especially with the polyborates forming in situ.…”

Section: Nature Of the Borates In Hydrolysis Of Ammonia Boranementioning

confidence: 92%

“…[56] In recent work, Liu et al demonstrated by using XRD, IR, and NMR spectroscopy that the main byproduct, after several drying steps, is B(OH) 3 , suggesting the liberation of all of the NH 3 from the starting AB. [69] Studies focused on the identification of the borates involved in the hydrolysis of AB are scarce and not complete enough to be able to understand the mechanisms of their formation. In parallel, it is also true that research specifically devoted to the recycling of the ammonium borates is poor.…”

Section: Nature Of the Borates In Hydrolysis Of Ammonia Boranementioning

confidence: 99%

“…Liu et al have even suggested that AB could liberate all of the NH 3 in specific conditions during both hydrolysis and drying of the spent fuel, with B(OH) 3 as the main solid byproduct. [69] …”

Section: Nh 3 Releasementioning

confidence: 99%

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Hydrolysis of Ammonia Borane as a Hydrogen Source: Fundamental Issues and Potential Solutions Towards Implementation

et al. 2011

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In today's era of energy crisis and global warming, hydrogen has been projected as a sustainable alternative to depleting CO(2)-emitting fossil fuels. However, its deployment as an energy source is impeded by many issues, one of the most important being storage. Chemical hydrogen storage materials, in particular B-N compounds such as ammonia borane, with a potential storage capacity of 19.6 wt % H(2) and 0.145 kg(H2)L(-1), have been intensively studied from the standpoint of addressing the storage issues. Ammonia borane undergoes dehydrogenation through hydrolysis at room temperature in the presence of a catalyst, but its practical implementation is hindered by several problems affecting all of the chemical compounds in the reaction scheme, including ammonia borane, water, borate byproducts, and hydrogen. In this Minireview, we exhaustively survey the state of the art, discuss the fundamental problems, and, where applicable, propose solutions with the prospect of technological applications.

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Section: Nature Of the Borates In Hydrolysis Of Ammonia Boranementioning

confidence: 92%

Section: Nature Of the Borates In Hydrolysis Of Ammonia Boranementioning

confidence: 99%

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Hydrolysis of Ammonia Borane as a Hydrogen Source: Fundamental Issues and Potential Solutions Towards Implementation

et al. 2011

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“…Furthermore, hydrogen can be generated from hydrolysis of AB at room temperature in presence of proper catalysts. In general, the catalysts for the hydrolysis reaction of AB can be either acids (liquid or solid) or metal catalysts [2]. Hence, the hydrolysis reaction of AB is often expressed as follows: catalyst 3 3 2 2 3 3 3 NH BH +2H O 3H +H BO +NH +Heat As the higher hydrogen storage capacity of a chemical hydride fuel system is desired, a light-weighted catalyst or less water present in the reacting system is desired.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Storage in a Chemical Hydride Fuel System Containing Ammonia Borane and Ni-Co/r-GO Catalyst

2014

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Hydrogen, one of environmentally benign energies, has attracting more and more attention. Out of many hydrogen storage systems, chemical hydrides not only have a high hydrogen storage capacity, but also produce ultrapure hydrogen in presence of adequate catalysts at room temperature. Among many chemical hydrides, ammonia borane (NH3BH3) is one of the promising candidates because its intrinsic hydrogen content is as high as 19.6 wt%. Moreover, the spent products of ammonia borane are non-flammable and rarely toxic. The chemical hydride fuel system was prepared by pulverizing ammonia borane and Ni-Co/r-GO catalysts in a high-energy ball mill. The hydrogen was produced from catalyzed hydrolysis reaction of ammonia borane composite initiated with limited amount of water. Variable parameters such as the amount of water dosage and loading of catalysts will be discussed in this study.

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“…In general, these methods include (1) high-pressure gas tanks, (2) liquefied hydrogen, (3) metal hydrides, and (4) chemical hydrides (e.g. KBH 4 , NaBH 4 , and NH 3 BH 3 ) [4,5,8e23]. Unfortunately, most of them are deemed unsuitable because they are either energyconsuming or unable to store satisfactory content of hydrogen [24].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production from hydrolysis of ammonia borane with limited water supply

Chou

Lee

Chen

2012

International Journal of Hydrogen Energy

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Hydrogen generated from hydrolysis of ammonia borane using cobalt and ruthenium based catalysts

Cited by 64 publications

References 22 publications

Hydrolysis of Ammonia Borane as a Hydrogen Source: Fundamental Issues and Potential Solutions Towards Implementation

Hydrolysis of Ammonia Borane as a Hydrogen Source: Fundamental Issues and Potential Solutions Towards Implementation

Hydrogen Storage in a Chemical Hydride Fuel System Containing Ammonia Borane and Ni-Co/r-GO Catalyst

Hydrogen production from hydrolysis of ammonia borane with limited water supply

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