Chitosan-mediated Co–Ce–B nanoparticles for catalyzing the hydrolysis of sodium borohydride

Zou, Yongjin; Yin, Ying; Gao, Yubo; Xiang, Cuili; Chu, Hailiang; Qiu, Shujun; Yan, Erhu; Xu, Fen; Sun, Lin

doi:10.1016/j.ijhydene.2018.01.125

Cited by 79 publications

(20 citation statements)

References 60 publications

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“…This activation means that the catalytic activity of SSMS‐ZnCl 2 ‐CoB is more effective than the different catalyst systems. The comparison of the activation energy and hydrogen production rate parameters for the SB hydrolysis and methanolysis reaction catalyzed by different catalysts is given in Table …”

Section: Resultsmentioning

confidence: 99%

“…The comparison of the activation energy and hydrogen production rate parameters for the SB hydrolysis and methanolysis reaction catalyzed by different catalysts is given in Table 2. [26][27][28][29][30] 3.10 | The reusability of SSMS-ZnCl 2 -CoB catalyst Reusability of SSMS-ZnCl 2 -CoB catalyst was tested in the HP reactions by SB methanolysis. At the end of the first use of SSMS-ZnCl 2 -CoB, the catalyst was removed from the reaction medium, washed with plenty of water to remove any impurities that could occur on the catalyst surface with pure water and prepared for subsequent use again.…”

Section: Temperature Effectmentioning

confidence: 99%

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Highly efficient CoB catalyst using a support material based on Spirulina microalgal strain treated with ZnCl ₂ for hydrogen generation via sodium borohydride methanolysis

2019

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Summary In the study, a different support material based on ZnCl2‐treated Spirulina microalgal strain (SSMS‐ZnCl2) was prepared. Then, the SSMS‐ZnCl2‐CoB catalysts were used as a very efficient catalyst to produce hydrogen via the SB methanolysis. The SB concentration, Co metal percentage in the supported‐catalyst, ZnCl2 concentration, ZnCl2 impregnation time, temperature, and reusability experiments were performed. The maximum hydrogen generation rates (HGR) for the SSMS‐ZnCl2‐CoB at 30°C and 60°C were found to be 9266 and 36 366 mL min−1 gcat−1, respectively. In addition, TOF values for 30°C and 60°C were calculated 33 and 110 L·molH2·molCo−1·min−1 for the methanolysis of SB with SSMS‐ZnCl2‐CoB catalyst. The activation energy was 31.13 kJ mol−1. The reusability experiments were repeated five times under the same conditions. The almost 100% conversion was obtained at each use. XRD, FTIR, TEM, SEM‐EDX, and ICP‐MS analysis were performed for SSMS‐ZnCl2‐CoB characterization.

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Section: Resultsmentioning

confidence: 99%

Section: Temperature Effectmentioning

confidence: 99%

Highly efficient CoB catalyst using a support material based on Spirulina microalgal strain treated with ZnCl ₂ for hydrogen generation via sodium borohydride methanolysis

2019

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“…The regression of ln r versus Co@C dosage obtains a linear relationship with a slope of 1.169 (inset of Figure ), implying that the reaction obeys first‐order kinetics in regard to the amount of catalyst. Zou et al also reported first order kinetics for Co–Ce–B/Chi–C catalyzed hydrolysis reaction of NaBH 4 …”

Section: Resultsmentioning

confidence: 99%

“…Zou et al also reported first order kinetics for Co-Ce-B/Chi-C catalyzed hydrolysis reaction of NaBH 4 . 36 In summary, the rate law for the Co@C-catalyzed hydrolysis of NaBH 4 can be expressed as follows:…”

Section: Kinetics Of Co@c-catalyzed Nabh 4 Hydrolysismentioning

confidence: 99%

Stability and kinetic studies of MOF‐derived carbon‐confined ultrafine Co catalyst for sodium borohydride hydrolysis

Zhang

Zhao

et al. 2019

Int J Energy Res

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Summary A mesoporous carbon‐confined cobalt (Co@C) catalyst was fabricated by pyrolysis of macroscale Co‐metal–organic framework (MOF) crystals and used to catalyze NaBH4 hydrolysis for hydrogen production. To reveal the structural changes of cobalt nanoparticles, we characterized the fresh and used Co@C catalysts using X‐ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and N2 adsorption. This MOF‐derived Co@C exhibits high and stable activity toward NaBH4 hydrolysis. No obvious agglomeration of Co nanoparticles occurred after five consecutive runs, implying good resistance of Co@C composite to metal aggregation. The kinetics of NaBH4 hydrolysis was experimentally studied by changing initial NaBH4 concentration, NaOH concentration, and catalyst dosage, respectively. It was found that the hydrogen generation rate follows a power law: r = A exp (−45.0/RT)[NaBH4]0.985[cat]1.169[NaOH]−0.451.

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“…Nevertheless, the efficiency and safety of storage remain what restricts the widespread applications of hydrogen. Up until now, there have been plenty of efforts made to demonstrate the potential of NaBH 4 as a promising material used for hydrogen storage 10‐14 . As it has a high density of hydrogen storage, production is pure.…”

Section: Introductionmentioning

confidence: 99%

Catalytic hydrolysis of alkaline sodium borohydride solution for hydrogen evolution in a micro‐scale fluidized bed reactor

Zhang

Cheng

et al. 2020

Int J Energy Res

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Summary An investigation was conducted into the generation of hydrogen from catalytic hydrolysis of alkaline sodium borohydride solution in a micro‐scale fluidized bed. In this work, the Cobalt loaded on walnut shell activated carbon was applied as the catalyst. The impact of NaBH4 concentration, the diameter of catalyst particle, the rate of reaction fluid flow, and the temperature of initial reaction fluid on the process of hydrogen generation was explored, and the optimum reaction conditions were determined. It was found out that the maximum length of stable hydrogen generation (58.46% of the total reaction time) is obtainable under the following conditions. The concentration of NaBH4 is 2 wt%, the flow rate is 3.00 × 10−3 m·s−1, and the flow temperature is 25°C. In addition, a comparison was performed between the batch reactor and micro‐fluidized bed reactor during the process of hydrogen generation. Moreover, when the concentration of NaBH4 reached 1 and 2 wt%, the efficiency and stability of the micro‐fluidized bed reactor were identified as superior to those of the batch reactor.

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Chitosan-mediated Co–Ce–B nanoparticles for catalyzing the hydrolysis of sodium borohydride

Cited by 79 publications

References 60 publications

Highly efficient CoB catalyst using a support material based on Spirulina microalgal strain treated with ZnCl ₂ for hydrogen generation via sodium borohydride methanolysis

Highly efficient CoB catalyst using a support material based on Spirulina microalgal strain treated with ZnCl ₂ for hydrogen generation via sodium borohydride methanolysis

Stability and kinetic studies of MOF‐derived carbon‐confined ultrafine Co catalyst for sodium borohydride hydrolysis

Catalytic hydrolysis of alkaline sodium borohydride solution for hydrogen evolution in a micro‐scale fluidized bed reactor

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Chitosan-mediated Co–Ce–B nanoparticles for catalyzing the hydrolysis of sodium borohydride

Cited by 79 publications

References 60 publications

Highly efficient CoB catalyst using a support material based on Spirulina microalgal strain treated with ZnCl 2 for hydrogen generation via sodium borohydride methanolysis

Highly efficient CoB catalyst using a support material based on Spirulina microalgal strain treated with ZnCl 2 for hydrogen generation via sodium borohydride methanolysis

Stability and kinetic studies of MOF‐derived carbon‐confined ultrafine Co catalyst for sodium borohydride hydrolysis

Catalytic hydrolysis of alkaline sodium borohydride solution for hydrogen evolution in a micro‐scale fluidized bed reactor

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Highly efficient CoB catalyst using a support material based on Spirulina microalgal strain treated with ZnCl ₂ for hydrogen generation via sodium borohydride methanolysis

Highly efficient CoB catalyst using a support material based on Spirulina microalgal strain treated with ZnCl ₂ for hydrogen generation via sodium borohydride methanolysis