Simple and fast fabrication of polymer template-Ru composite as a catalyst for hydrogen generation from alkaline NaBH4 solution

Hsueh, Chan Li; Chen, Chuh‐Yung; Ku, Jie-Ren; Tsai, S. Y.; Hsu, Ya-Yi; Tsau, Fang-Hei; Jeng, Ming-Shan

doi:10.1016/j.jpowsour.2007.11.096

Cited by 94 publications

(32 citation statements)

References 16 publications

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“…The kinetic of sodium borohydride hydrolysis reaction was investigated in the presence of different catalysts such as ruthenium (Ru) [13][14][15][16][17][18], platinum (Pt) [19,20], palladium (Pd) [20], nickel (Ni) [21,22], cobalt (Co) [21,23,24], Co-B [25,26], Ni-B [27], Ni-Co-B [28], carbon nanotubes (CNT) [29]. The result obtained in the presence of catalysts studies shows that the kinetic models of the hydrolysis of NaBH 4 are mostly zero-order or first-order with exception of the work of Reference [18] and the activation energy changes between 28 and 65 kJ mol In this study, the following three kinetics models were used to describe the behavior of the hydrolysis reaction of hydrogen generation by using an integral method.…”

Section: Effect Of Electrical Field Created By Ac Voltagementioning

confidence: 99%

Hydrogen production from sodium borohydride for fuel cells in presence of electrical field

Şahi̇n

Dolaş

Kaya

et al. 2009

Int. J. Energy Res.

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SUMMARYSodium borohydride (NaBH 4 ) reacts with water to produce 4 mol of hydrogen per mol of compound at room temperature. Under certain conditions, it was found that 6 mol of hydrogen per mol of sodium borohydride was produced in the presence of electrical field created by DC voltages, whereas 4 mol of hydrogen was produced in the presence of catalyst per mole of sodium borohydride. Electrical field created by alternative current with three different waves (sin, square and triangle type) increases the hydrolysis of sodium borohydride. It was found that hydrogen produced from sodium borohydride by applying an electrical field can be effectively used for both increasing the electrolysis of water and hydrolysis of sodium borohydride. The hydrolysis reaction was carried out at temperature of 20, 30, 40 and 601C in the presence of electrical field created by AC voltages square wave. The experimental data were fitted to the kinetic models of zero-order, first-order and nth-order. The results indicate that the first-order and nth-order model give a reasonable description of the hydrogen generation rate at the temperature higher than 301C. Reaction rate constant at different temperatures were determined from experimental data, and activation energy was found to be 50.20 and 52.28 kJ mol À1for first-order and nth-order, respectively.

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Section: Effect Of Electrical Field Created By Ac Voltagementioning

confidence: 99%

Hydrogen production from sodium borohydride for fuel cells in presence of electrical field

Şahi̇n

Dolaş

Kaya

et al. 2009

Int. J. Energy Res.

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“…Catalysts such as Pt, Ru, Pd, Rh, and other noble metals are very effective to accelerate the hydrolysis reaction of NaBH 4 [13][14][15][16]. However, the high cost of these precious metals makes it necessary to explore the alternative non-noble catalysts.…”

Section: Introductionmentioning

confidence: 99%

Effects of the Preparation Solvent on the Catalytic Properties of Cobalt–Boron Alloy for the Hydrolysis of Alkaline Sodium Borohydride

Zou

Gao

Huang

et al. 2017

Metals

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Abstract:In this study, the effects of the solvent used to prepare Co-B alloy on its catalytic properties were investigated. The solvent effects on the morphology, composition, and specific surface area of the alloy particles were also examined. The morphology of the alloy particles was found to be dependent on the solvent. The particles were granular in water, methanol, and acetone, although the particle diameters differed, whereas they were nanoflake-like in acetonitrile. Acetonitrile produced the largest surface area of the alloy particles, but the lowest catalytic activity for the hydrolysis of NaBH 4 owing to the ready oxidation of the particles in air. The Co-B in acetone exhibited the highest catalytic activity, represented by a hydrogen generation rate of 5733 mL·min −1 ·g −1 during the hydrolysis of 1.5 wt % NaBH 4 at 298 K. This hydrogen generation rate is more than twice that produced by the Co-B in water.

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“…The former undergoes stepwise replacement of B-H bonds by B-OH À bonds and nally yields Ni-B(OH) 3 À , as presented in eqn (9)- (11); the latter combines with two Ni-H to yield H 2 and to regenerate the active sites, as presented in eqn (12).…”

Section: -45mentioning

confidence: 99%

“…Noble metal (e.g., Pt, Ru, and Pd) materials [11][12][13][14][15][16][17] have been reported to promote high catalytic activity for the hydrolysis of NaBH 4 . However, they have many limitations in real applications due to their high costs and short lifetimes.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of a hollow Ni–Fe–B nanochain and its enhanced catalytic activity for hydrogen generation from NaBH₄hydrolysis

Guo

Hou

2018

RSC Adv.

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A hollow Ni-Fe-B nanochain is successfully synthesized by a galvanic replacement method using a Fe-B nanocomposite and a NiCl 2 solution as the template and additional reagent, respectively. Both the concentration of Ni and the morphology of the resulting Ni-Fe-B alloy are controlled by varying the duration of the replacement process during the synthesis. The Ni-Fe-B sample synthesized for 60 min (Ni-Fe-B-60) shows the best catalytic activity at 313 K, with a hydrogen production rate of 4320 mL min À1 g cat À1 and an activation energy for the NaBH 4 hydrolysis reaction of 33.7 kJ mol À1 . The good performance of Ni-Fe-B-60 towards the hydrolysis of NaBH 4 can be ascribed to both hollow nanochain structural and electronic effects. Furthermore, the effects of temperature, catalyst amount, and concentration of NaOH and NaBH 4 on the hydrolysis process are systematically studied, and an overall kinetic rate equation is obtained. The hollow Ni-Fe-B nanochain catalyst also shows good reusability characteristics and maintained its initial activity after 5 consecutive cycles.

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Simple and fast fabrication of polymer template-Ru composite as a catalyst for hydrogen generation from alkaline NaBH4 solution

Cited by 94 publications

References 16 publications

Hydrogen production from sodium borohydride for fuel cells in presence of electrical field

Hydrogen production from sodium borohydride for fuel cells in presence of electrical field

Effects of the Preparation Solvent on the Catalytic Properties of Cobalt–Boron Alloy for the Hydrolysis of Alkaline Sodium Borohydride

Facile synthesis of a hollow Ni–Fe–B nanochain and its enhanced catalytic activity for hydrogen generation from NaBH₄hydrolysis

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Simple and fast fabrication of polymer template-Ru composite as a catalyst for hydrogen generation from alkaline NaBH4 solution

Cited by 94 publications

References 16 publications

Hydrogen production from sodium borohydride for fuel cells in presence of electrical field

Hydrogen production from sodium borohydride for fuel cells in presence of electrical field

Effects of the Preparation Solvent on the Catalytic Properties of Cobalt–Boron Alloy for the Hydrolysis of Alkaline Sodium Borohydride

Facile synthesis of a hollow Ni–Fe–B nanochain and its enhanced catalytic activity for hydrogen generation from NaBH4hydrolysis

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Product

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Facile synthesis of a hollow Ni–Fe–B nanochain and its enhanced catalytic activity for hydrogen generation from NaBH₄hydrolysis