Hydrogen production through hydrolysis of sodium borohydride: Oleic acid stabilized Co–La–Zr–B nanoparticle as a novel catalyst

Loghmani, Mohammad Hassan; Shojaei, Abdollah Fallah

doi:10.1016/j.energy.2014.02.047

Cited by 51 publications

(14 citation statements)

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“…Within the temperatures ranging from 303 to 323 K, E a was calculated to be 47.2 ± 2.1 kJ/mol for Rh 10 Ni 90 BNPs. These results suggest that the as-prepared Rh 10 Ni 90 BNPs are excellent catalysts for the hydrolysis of KBH 4 because of their lower apparent activation energy compared with other reported catalysts, such as 51.2 kJ/mol for Co-La-Zr-B NPs [28], 52.0 kJ/mol for Co-αAl 2 O 3 -Cu catalysts [29], 55.6 kJ/mol for Co/alginate hydrogels [30], and 48.8 kJ/mol for Mo incorporated Co-Ru-B catalysts [31], etc. Figure 5 showed that most of the as-prepared BNPs have higher activity than that of Rh and Ni MNPs, and that Rh10Ni90 BNPs possessed the highest catalytic activity for the hydrolysis of KBH4 among all prepared NPs.…”

Section: Kinetic Study On Rh10ni90 Bnpsmentioning

confidence: 77%

Preparation of Rh/Ni Bimetallic Nanoparticles and Their Catalytic Activities for Hydrogen Generation from Hydrolysis of KBH4

et al. 2017

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ISOBAM-104 protected Rh/Ni bimetallic nanoparticles (BNPs) of 3.1 nm in diameter were synthesized by a co-reduction method with a rapid injection of KBH 4 solution. The catalytic activities of as-prepared BNPs for hydrogen generation from hydrolysis of a basic KBH 4 solution were evaluated. Ultraviolet-visible spectrophotometry (UV-Vis), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM) were employed to characterize the structure, particle size, and chemical composition of the resultant BNPs. Catalytic activities for hydrolysis of KBH 4 and catalytic kinetics of prepared BNPs were also investigated. It was shown that Rh/Ni BNPs displayed much higher catalytic activities than that of Rh or Ni monometallic nanoparticles (MNPs), and the prepared Rh 10 Ni 90 BNPs possessed the highest catalytic activities, with a value of 11,580 mol-H 2 ·h −1 ·mol-Rh −1 . The high catalytic activities of Rh/Ni BNPs could be attributed to the electron transfer effect between Rh and Ni atoms, which was confirmed by a density functional theory (DFT) calculation. The apparent activation energy for hydrogen generation of the prepared Rh 10 Ni 90 BNPs was about 47.2 ± 2.1 kJ/mol, according to a kinetic study.

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Section: Kinetic Study On Rh10ni90 Bnpsmentioning

confidence: 77%

Preparation of Rh/Ni Bimetallic Nanoparticles and Their Catalytic Activities for Hydrogen Generation from Hydrolysis of KBH4

et al. 2017

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“…They found the activation energy as a Ea = 51.24 kJ mol −1 and determined the reaction the first-order kinetics in the presence of oleic acid. 31 In another study from authors in 2015, they used Triphenylphosphine (TPP) as a stabilizing agent. The effect of TPP stabilized La-Zr co-doped Co-B catalyst on the hydrogen generation through hydrolysis of sodium borohydride alkaline solution was investigated.…”

Section: Introductionmentioning

confidence: 99%

Preparation of highly efficient NiB catalyst via triton‐stabilized for alkaline NaBH ₄ hydrolysis reaction

Elçiçek

Erol

Özdemir

2021

Intl J of Energy Research

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The development of highly active and cost effective catalysts for hydrolysis of sodium borohydride (NaBH 4 ) is the main aim for practical usage of NaBH 4 for fuel cells. Herein, we investigated the addition of various amounts of Triton during chemical reduction process on the NiB catalytic activity. The experimental results indicated that the catalytic performance of Triton stabilized NiB catalysts was significantly higher than that of NiB catalysts. Furthermore, the highest hydrogen generation rate in NaBH 4 hydrolysis was obtained with 25 μL Triton addition as 8970 mL.min −1 .g −1 cat at 338 K. The activation energy of the hydrolysis for NiB25 and NiB catalysts were calculated as 48.05 and 58.91 kJ mol −1 , respectively. In the second part of this study, the kinetic performance of NaBH 4 hydrolysis was experimentally studied, and subsequently generated hydrogen from the hydrolysis reaction was fed directly to the fuel cell and the performance analysis were investigated. It was found that the power density of pure hydrogen was lower than the hydrogen generated by the NiB25 catalysts. Our results clearly indicated that Triton possessed a significant effect on the catalytic activity of NiB catalyst.

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“…Self hydrolysis of DMAB and NaBH4 is quite slow; however, the reaction can be greatly accelerated with an appropriate catalyst [3]. Previous studies have shown that catalysts, such as Pt, Ru, Rh, Pd, Ni, Co, Fe [1,[8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], or various metal alloys [23][24][25][26][27] can be used for H2 production from the hydrolysis of NaBH4. For H2 production from DMAB, noble metals, such as Pd, Ru, Rh, Ir, Pt and Re, have been investigated for the catalytic dehydrogenation of DMAB [28][29][30][31][32][33][34]; however, these reactions were mostly conducted in neat organic media, where only 1 mole of H2 per mole of DMAB could be generated.…”

Section: Introductionmentioning

confidence: 99%

Ni-polymer nanogel hybrid particles: A new strategy for hydrogen production from the hydrolysis of dimethylamine-borane and sodium borohydride

Cai

Liu

Chen

et al. 2016

Energy

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Efficient non-precious metal catalysts are crucial for hydrogen production from borohydride compounds in aqueous media via hydrogen atoms in water. A method for preparing magnetic polymer nanoparticles is developed in this study based on the chemical deposition of nickel onto hydrophilic polymer nanogels. High-resolution transmission electron microscopic and XPS analyses show that Ni exists mainly in the form of NiO in nanogels. Excellent catalytic activities of the nanoparticles are demonstrated for hydrogen generation from the hydrolysis of dimethylamine-borane and sodium borohydride in which the initial turnover frequencies (TOF) are 376 and 1919 h-1 , respectively. Kinetic studies also reveal an Arrhenius activation energy of 50.96 kJ/mol for the hydrolysis of dimethylamine-borane and 47.82 kJ/mol for the hydrolysis of sodium borohydride, which are lower than those catalyzed by Ru metal. Excellent reusability and the use of water for hydrogen production from dimethylamine-borane provide the additional benefit of using a hybrid catalyst. The principle illustrated in the present study offers a new strategy to explore polymer-transition metal hybrid particles for hydrogen energy technology.

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Hydrogen production through hydrolysis of sodium borohydride: Oleic acid stabilized Co–La–Zr–B nanoparticle as a novel catalyst

Cited by 51 publications

References 50 publications

Preparation of Rh/Ni Bimetallic Nanoparticles and Their Catalytic Activities for Hydrogen Generation from Hydrolysis of KBH4

Preparation of Rh/Ni Bimetallic Nanoparticles and Their Catalytic Activities for Hydrogen Generation from Hydrolysis of KBH4

Preparation of highly efficient NiB catalyst via triton‐stabilized for alkaline NaBH ₄ hydrolysis reaction

Ni-polymer nanogel hybrid particles: A new strategy for hydrogen production from the hydrolysis of dimethylamine-borane and sodium borohydride

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Hydrogen production through hydrolysis of sodium borohydride: Oleic acid stabilized Co–La–Zr–B nanoparticle as a novel catalyst

Cited by 51 publications

References 50 publications

Preparation of Rh/Ni Bimetallic Nanoparticles and Their Catalytic Activities for Hydrogen Generation from Hydrolysis of KBH4

Preparation of Rh/Ni Bimetallic Nanoparticles and Their Catalytic Activities for Hydrogen Generation from Hydrolysis of KBH4

Preparation of highly efficient NiB catalyst via triton‐stabilized for alkaline NaBH 4 hydrolysis reaction

Ni-polymer nanogel hybrid particles: A new strategy for hydrogen production from the hydrolysis of dimethylamine-borane and sodium borohydride

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Preparation of highly efficient NiB catalyst via triton‐stabilized for alkaline NaBH ₄ hydrolysis reaction