Carbon-supported cobalt catalyst for hydrogen generation from alkaline sodium borohydride solution

Xu, Dongyan; Dai, Ping; Liu, Xinmin; Chen, Cao; Guo, Qingjie

doi:10.1016/j.jpowsour.2008.04.018

Cited by 169 publications

(40 citation statements)

References 21 publications

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“…4, the hydrogen production rate increased with increasing calcination temperature up to 450°C. Similar results have also been reported by Xu et al [11] in that the hydrogen production rate of the Co/AC catalyst increased with increasing calcination temperature. However, at temperatures above 450°C, the hydrogen production rate decreased with calcination temperature.…”

Section: Calcination Temperaturesupporting

confidence: 90%

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Catalytic properties of Co/activated carbon catalyst prepared from wheat stalk

Chen

Gao

Zhou³

et al. 2010

Reac Kinet Mech Cat

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For hydrogen generation from an aqueous alkaline NaBH 4 solution, a novel biomass precursor for the production of Co/activated carbon (Co/AC)) catalyst was studied in this investigation. To design a hydrogen generator, the hydrogen generation rate was measured using the Co/AC catalyst as a function of calcination time, calcination temperature and impregnation mass ratio of CoCl 2 /AC. SEM and XRD analysis revealed that the prepared catalyst consisted of a crystalline form of Co 3 O 4 and had a good dispersion and coating properties. It was observed that increasing the solution temperature causes more hydrogen generation. The activation energy for the NaBH 4 hydrolysis reaction was calculated to be 37.4 kJ mol -1 .

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Section: Calcination Temperaturesupporting

confidence: 90%

“…The catalysts based on Rh [2], Pd [3], Ru [4,5] and Pt [6] have been mostly employed for the hydrolysis of NaBH 4 . Furthermore, non-noble catalysts such as Ni [7], Fe [8] or Co [9][10][11] have also been investigated.…”

mentioning

confidence: 99%

Catalytic properties of Co/activated carbon catalyst prepared from wheat stalk

Chen

Gao

Zhou³

et al. 2010

Reac Kinet Mech Cat

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“…Demirci et al [13] [14]. Active carbon supported Co-B catalyst, prepared by Xu et al, showed activation energy of 44 kJ mol −1 [15]. Co-B supported on Pd [16], SiO 2 [17], zeolites [18] has been reported to be highly effective on NaBH 4 hydrolysis.…”

Section: Open Accessmentioning

confidence: 99%

Hydrogen generation from NaBH₄ hydrolysis using Co-B/AlPO₄ and Co-B/bentonite catalysts

Manna

Roy

Pareek

et al. 2017

Catalysis, Structure & Reactivity

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Aluminium phosphate and bentonite supported Co-B catalyst were synthesized via two step impregnation-reduction method for sodium borohydride hydrolysis. The synthesized catalysts were characterized by XRD, FTIR, XPS, FE-SEM, FE-TEM, BET, ICP-AES techniques and tested for NaBH 4 hydrolysis reaction. The results demonstrated that the synthesized supported Co-B catalysts greatly facilitate the NaBH 4 hydrolysis reaction. Highest hydrolysis rate observed for Co-B/AlPO 4 and Co-B/bentonite catalysts are 6.50 and 3.91 L min −1 g −1 , respectively, with 2 wt% NaBH 4 , 5 wt% NaOH solution at 30 °C. The hydrogen generation rate was found to increase with experimental temperature. Activation energy for the hydrolysis reaction was observed to be 37 and 40.2 kJ mol −1 for Co-B/AlPO 4 and Co-B/bentonite catalysts, respectively.

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“…Another reason for this is; The high concentrations of NaBH 4 and NaBO 2 presented in the medium increase the viscosity of the final solution, which slows the mass transfer to the catalyst surface from the NaBH4 present in the solution medium. Xu et al 21 . found the same conclusion in their work.…”

Section: Effect Of Concentration Of Nabhmentioning

confidence: 99%

Investigation of High-Activity Activated Carbon-Supported Co-Cr-B Catalyst in the Generation of Hydrogen from Hydrolysis of Sodium Borohydride

Baytar¹

2018

ACSi

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In this study, activated carbon-supported Co-Cr-B catalyst was synthesized by chemical impregnation and precipitation method for use in the catalytic hydrolysis of sodium borohydride (NaBH 4 ). The activity of Co-Cr-B / activated carbon (5-20%) obtained by using different ratios was investigated while synthesizing activated carbon-supported Co-Cr-B catalyst. The effects of some parameters such as NaOH Concentration (0-5%), NaBH 4 concentration (2.5-10%), amount of catalyst (25-100 mg) and solution ambient temperature were investigated in the catalytic hydrolysis of NaBH 4 . The hydrogen production rate of Co-Cr-B catalyst without support in hydrolysis of NaBH 4 was found as 6.5 Lg -1 min -1 catalyst while the hydrogen production rate of activated carbon supported Co-Cr-B catalyst was found as 30.2 Lg -1 min -1 catalyst . In presence of activated carbon-supported Co-Cr-B catalyst, the hdyrolysis kinetic order and activation energy of NaBH 4 were found as 0.126 and 16.27 kJ/mol, respectively. The results suggest that activated carbon-supported Co-Cr-B catalysts can be used for mobile applications of Proton exchange membrane fuel cell (PEMFCs) systems.

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Carbon-supported cobalt catalyst for hydrogen generation from alkaline sodium borohydride solution

Cited by 169 publications

References 21 publications

Catalytic properties of Co/activated carbon catalyst prepared from wheat stalk

Catalytic properties of Co/activated carbon catalyst prepared from wheat stalk

Hydrogen generation from NaBH₄ hydrolysis using Co-B/AlPO₄ and Co-B/bentonite catalysts

Investigation of High-Activity Activated Carbon-Supported Co-Cr-B Catalyst in the Generation of Hydrogen from Hydrolysis of Sodium Borohydride

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Carbon-supported cobalt catalyst for hydrogen generation from alkaline sodium borohydride solution

Cited by 169 publications

References 21 publications

Catalytic properties of Co/activated carbon catalyst prepared from wheat stalk

Catalytic properties of Co/activated carbon catalyst prepared from wheat stalk

Hydrogen generation from NaBH4 hydrolysis using Co-B/AlPO4 and Co-B/bentonite catalysts

Investigation of High-Activity Activated Carbon-Supported Co-Cr-B Catalyst in the Generation of Hydrogen from Hydrolysis of Sodium Borohydride

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Hydrogen generation from NaBH₄ hydrolysis using Co-B/AlPO₄ and Co-B/bentonite catalysts