Effect of l-arginine on the catalytic activity and stability of nickel nanoparticles for hydrolytic dehydrogenation of ammonia borane

Umegaki, Tetsuo; Xu, Qiang; Kojima, Yoshiyuki

doi:10.1016/j.jpowsour.2012.05.085

Cited by 14 publications

(4 citation statements)

References 59 publications

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“…Therefore, the development of efficient and economical nonnoble catalysts to further improve the kinetic properties is of great importance for the practical application of hydrogen generation/storage systems. The nonnoble metals (i.e., Fe, Co, Ni, and Cu) containing catalysts have been extensively investigated in the past several years [39][40][41][42][43][44][45][46][47][48][49][50][51], and among them, Co-based catalysts with similar structure or stabilizer were found to have the highest catalytic activity. The -Al 2 O 3 , SiO 2 , and C supported nonoble metals (Co, Ni, and Cu) NPs were reported to be catalytically active, whereas supported Fe NPs were inactive for catalytic hydrolysis of AB [39].…”

Section: Ammonia Boranementioning

confidence: 99%

Nanocatalysts for Hydrogen Generation from Ammonia Borane and Hydrazine Borane

Yao

Zhang

et al. 2014

Journal of Nanomaterials

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Ammonia borane (denoted as AB, NH3BH3) and hydrazine borane (denoted as HB, N2H4BH3), having hydrogen content as high as 19.6 wt% and 15.4 wt%, respectively, have been considered as promising hydrogen storage materials. Particularly, the AB and HB hydrolytic dehydrogenation system can ideally release 7.8 wt% and 12.2 wt% hydrogen of the starting materials, respectively, showing their high potential for chemical hydrogen storage. A variety of nanocatalysts have been prepared for catalytic dehydrogenation from aqueous or methanolic solution of AB and HB. In this review, we survey the research progresses in nanocatalysts for hydrogen generation from the hydrolysis or methanolysis of NH3BH3and N2H4BH3.

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Section: Ammonia Boranementioning

confidence: 99%

Nanocatalysts for Hydrogen Generation from Ammonia Borane and Hydrazine Borane

Yao

Zhang

et al. 2014

Journal of Nanomaterials

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“…Additionally, NH 3 BH 3 releases hydrogen via a hydrolysis reaction in the presence of suitable acids and catalysts at room temperature (Eq. (1)) [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]: NH 3 BH 3 + 2H 2 O → NH 4 + + BO 2  + 3H 2 (1) It has been reported that solid acids such as H-type zeolites (H-BEA and H-MOR) show high activity for the hydrolytic dehydrogenation of NH 3 BH 3 [13]. We have reported that hollow silica-alumina composite spheres show higher activity compared with fine particles [14].…”

Section: Introductionmentioning

confidence: 99%

Influence of morphology of hollow silica–alumina composite spheres on their activity for hydrolytic dehydrogenation of ammonia borane

et al. 2017

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Hollow silica-alumina composite spheres were prepared by a polystyrene (PS) template method using various amounts of PS suspension. Homogeneous hollow spheres prepared using 40 g were found to be with a diameter of about 300 nm in scanning electron microscopy, and transmission electron microscopy demonstrated their hollow sphere morphology. From the nitrogen adsorption isotherm results, the homogeneous hollow spheres prepared using 40 g of the PS suspension were found to be an ordered pore structure. The activities of the hollow spheres prepared using various amounts of the PS suspension for hydrolytic dehydrogenation of ammonia borane were compared. The results showed that 10, 7, and 6 mL of hydrogen were evolved from the aqueous ammonia borane solution in about 40 min in the presence of the hollow spheres prepared using 40, 80, and 120 g of PS suspension, respectively. The homogeneous hollow spheres with an ordered pore structure showed the highest activity among all the hollow spheres. The amount of acid sites and the coordination number of aluminum active species were characterized using neutralization titration and solid-state 27 Al magic angle spinning nuclear magnetic resonance spectroscopy. The homogeneous hollow spheres with an ordered pore structure had high amount of acid sites and 4-coordinated aluminum species. The relative proportion of 4-coordinated aluminum species was related to the dispersion of aluminum species. These results indicate that the homogeneous hollow spheres with an ordered pore structure showed the high activity because of high amount of acid sites induced by the highly dispersed aluminum species.

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“…Nickel nanoparticles are versatile materials and potentially attractive for a large number of applications ranging from batteries [1], catalysis [2,3] and photocatalysis [4], to electro-oxidation [5], magnetic devices [6], medicine [7], fuel cells [8,9], and composite materials of carbon [10] and ceramics [11]. The most common method to prepare nickel nanoparticles is based on solvothermal reduction process, a simple and facile method to control the particle size.…”

Section: Introductionmentioning

confidence: 99%