In situ facile synthesis of ruthenium nanocluster catalyst supported on carbon black for hydrogen generation from the hydrolysis of ammonia-borane

Liang, Hongyan; Chen, Guozhu; Desinan, Stefano; Rosei, R.; Rosei, Federico; Ma, Dongling

doi:10.1016/j.ijhydene.2012.09.026

Cited by 161 publications

(68 citation statements)

References 31 publications

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“…Almost all the catalysts reported in the past for hydrolysis of AB are in the form of powder including those supported on certain substrates [7,11,15,[22][23][24][25][26][27][28][29][30]40]. The major problem with this form is that catalysts cannot be easily recovered.…”

Section: Study Of On/off Property Of Ru/c Thin Film Catalystmentioning

confidence: 99%

“…Heterogeneous route of catalysis involving metal catalysts has been found to be very efficient in accelerating HGR. Various noble and non-noble metal catalysts like Rh [5], Pd [6], Ru [7], Co [8], Ni [9] and Fe [10] nanoclusters, Ru/C powder catalyst [11], K 2 PtCl 6 [12], NiAg [13], Ni@Ru [14], Ru, Rh and Pt supported over γ-Al 2 O 3 [15], Co/γ-Al 2 O 3 [16], nickel and cobalt borides [17][18][19][20] etc., have been generally used to produce hydrogen by hydrolysis of AB.…”

Section: Introductionmentioning

confidence: 99%

“…The absorptive properties of carbon can be tuned by simply decorating the surface of carbon with oxygen-containing groups with acidic, neutral, or basic nature [39]. Ru supported over black carbon [11], multi-walled CNT [40], and graphene [23], displayed outstanding catalytic activity for hydrolysis of AB with very high stability. In all the cases, the enhanced activity is attributed to the role played by carbon in providing high surface area and in dispersing the Ru NPs on the surface to make available good number of active sites.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ruthenium nanoparticles supported over carbon thin film catalyst synthesized by pulsed laser deposition for hydrogen production from ammonia borane

Fernandes

Patel

Edla

et al. 2015

Applied Catalysis A: General

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Section: Study Of On/off Property Of Ru/c Thin Film Catalystmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ruthenium nanoparticles supported over carbon thin film catalyst synthesized by pulsed laser deposition for hydrogen production from ammonia borane

Fernandes

Patel

Edla

et al. 2015

Applied Catalysis A: General

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“…Compared to conventional support materials (e.g., SBA-15 [14], carbon black [18], Al 2 O 3 [19], SiO 2 [20], and TiO 2 [21]), porous carbon materials are widely used in industrial applications due to their high surface area, good thermal and mechanical stabilities, chemical inertness, and high physisorption capacity [22][23][24]. Porous carbon materials have attracted attention in materials science and catalysis, and they have emerged as potential supports for growing and anchoring metal nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Cobalt-Nickel-Boron Supported over Polypyrrole-Derived Activated Carbon for Hydrolysis of Ammonia Borane

Zou

Gao

Xiang

et al. 2016

Metals

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Abstract:In this study, polypyrrole (PPy) nanofibers were used to synthesize a super-activated carbon material. A highly-dispersed Co-Ni-B catalyst was supported on PPy nanofiber-derived activated carbon (PAC) by chemical reduction. The Co-Ni-B/PAC hybrid catalyst exhibited excellent catalytic performance for the decomposition of ammonia borane (AB) in an aqueous alkaline solution at room temperature. The size of the metal particles, morphology of Co-Ni-B/PAC, and catalytic activity of the supported catalyst were investigated. Ni-B, Co-B, and Co-Ni-B catalysts were also synthesized in the absence of PAC under similar conditions for comparison. The maximum hydrogen generation rate (1451.2 mL´1¨min´1¨g´1 at 25˝C) was obtained with Co-Ni-B/PAC. Kinetic studies indicated that the hydrolysis reaction of AB was first order with respect to Co-Ni-B/PAC, and the activation energy was 30.2 kJ¨mol´1. Even after ten recycling experiments, the catalyst showed good stability owing to the synergistic effect of Co-Ni-B and PAC.

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“…It is reported that ruthenium-based catalysts are highly active catalysts for this dehydrogenation reaction. Studies on catalysts for hydrogen generation from aqueous NH 3 BH 3 solution show that dispersion of active metals and/or the amorphous nature of the active phase could play an important role in catalytic performance [17][18][19][20][21][22].…”

mentioning

confidence: 99%

Influence of preparation conditions on morphology of in-situ synthesized hollow ruthenium-silica composite spheres for hydrolytic dehydrogenation of ammonia borane

Umegaki

Enomoto

et al. 2016

J Sol-Gel Sci Technol

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Hollow ruthenium-silica composite spheres were synthesized from spherical ruthenium-silica composite particles prepared by sol-gel method, followed by in-situ activation in an aqueous sodium borohydride (NaBH 4 )/ ammonia borane (NH 3 BH 3 ) solutions. Through the preparation of the spherical particles, we investigated influence of promotors (L(+)-arginine and ammonia) on the sol-gel reaction in terms of the morphology of the spherical particle precursors and the hollow spheres. Average particle size of the precursors drastically increased by increasing the amount of L(+)-arginine used, though this also increased the solution pH. Average particle size of the precursors did not significantly increase when concentration of ammonia increased. These results indicate that L(+)-arginine promotes particle growth more effectively than ammonia. The spherical particles prepared with L(+)-arginine shows a higher hydrogen evolution rate and a higher quantity of evolved hydrogen from the aqueous NaBH 4 /NH 3 BH 3 solution than the spherical particles prepared with ammonia. The spherical particles resulting from in-situ synthesis with sizes ranging from 100 to 950 nm possess hollow voids. UV-Vis spectra of the in-situ synthesized samples indicated that the activity depends on the reducibility of the active ruthenium species. The ruthenium species included in the sample prepared using L(+)-arginine was more metallic than that included in the sample prepared using ammonia.Keywords In situ synthesized • pH value • Hollow ruthenium-silica composite spheres • Hydrolytic dehydrogenation of ammonia borane Graphical Abstract 9 9.2 9.4 9.6 9.8 10 pH [-] 0 0.2 0.4 0.6 0.8 1 Particle size [µm] L(+)-arginine ammonia * Tetsuo Umegaki

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In situ facile synthesis of ruthenium nanocluster catalyst supported on carbon black for hydrogen generation from the hydrolysis of ammonia-borane

Cited by 161 publications

References 31 publications

Ruthenium nanoparticles supported over carbon thin film catalyst synthesized by pulsed laser deposition for hydrogen production from ammonia borane

Ruthenium nanoparticles supported over carbon thin film catalyst synthesized by pulsed laser deposition for hydrogen production from ammonia borane

Cobalt-Nickel-Boron Supported over Polypyrrole-Derived Activated Carbon for Hydrolysis of Ammonia Borane

Influence of preparation conditions on morphology of in-situ synthesized hollow ruthenium-silica composite spheres for hydrolytic dehydrogenation of ammonia borane

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