Hydrogen generation from hydrolysis of sodium borohydride by silica xerogel supported cobalt catalysts: Positive roles of amine modification and calcination treatment

Fuel ◽  
2021 ◽  
Vol 303 ◽  
pp. 121326
Author(s):  
Filiz Akti
Keyword(s):  
Sodium Borohydride ◽  
Hydrogen Generation ◽  
Cobalt Catalysts ◽  
Silica Xerogel ◽  
Amine Modification ◽  
Supported Cobalt Catalysts ◽  
Hydrolysis Of ◽  
Calcination Treatment

Porous Co3O4 nanoplatelets as efficient catalyst precursor for hydrogen generation from the hydrolysis of alkaline sodium borohydride solution

2019 ◽  
Vol 12 (01) ◽  
pp. 1850109 ◽  
Author(s):  
Maixia Ma ◽  
Lei Wei ◽  
Fang Jin
Keyword(s):  
Sodium Borohydride ◽  
Hydrogen Generation ◽  
Catalyst Precursor ◽  
Efficient Catalyst ◽  
Noble Metal Catalysts ◽  
Reaction Solution ◽  
High Efficient ◽  
Catalyst Morphology ◽  
Hydrolysis Of ◽  
Calcination Treatment

For hydrogen generation from sodium borohydride hydrolysis, high-efficient catalyst precursor of porous Co3O4 nanoplatelets was successfully achieved by a combined process of hydrothermal synthesis and calcination treatment. Effects of calcination temperature on catalyst morphology and activity were mainly investigated, and the optimal condition was established. Using a reaction solution comprising 10[Formula: see text]wt.% NaBH4 and 2[Formula: see text]wt.% NaOH, the porous Co3O4 nanoplatelets exhibited a maximum hydrogen generation rate up to 19.52[Formula: see text]L[Formula: see text]min[Formula: see text] g[Formula: see text] at the temperature of 25[Formula: see text]C, which was much higher than similar Co3O4 catalyst precursors and noble metal catalysts in literature.

Hydrogen generation from hydrolysis of sodium borohydride using Ni–Ru nanocomposite as catalysts

2009 ◽  
Vol 34 (5) ◽  
pp. 2153-2163 ◽  
Author(s):  
Cheng-Hong Liu ◽  
Bing-Hung Chen ◽  
Chan-Li Hsueh ◽  
Jie-Ren Ku ◽  
Ming-Shan Jeng ◽  
...  
Keyword(s):  
Sodium Borohydride ◽  
Hydrogen Generation ◽  
Hydrolysis Of

Novel high dispersion and high stability cobalt-inlaid carbon sphere catalyst for hydrogen generation from the hydrolysis of sodium borohydride

Fuel ◽  
2022 ◽  
Vol 310 ◽  
pp. 122276
Author(s):  
Lei Sun ◽  
Yuanyuan Meng ◽  
Xinxin Kong ◽  
Huiyun Ge ◽  
Xingman Chen ◽  
...  
Keyword(s):  
Sodium Borohydride ◽  
High Stability ◽  
Hydrogen Generation ◽  
High Dispersion ◽  
Carbon Sphere ◽  
Hydrolysis Of

scholarly journals Copper Nanowires as Highly Efficient and Recyclable Catalyst for Rapid Hydrogen Generation from Hydrolysis of Sodium Borohydride

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1153 ◽  
Author(s):  
Aina Shasha Hashimi ◽  
Muhammad Amirul Nazhif Mohd Nohan ◽  
Siew Xian Chin ◽  
Poi Sim Khiew ◽  
Sarani Zakaria ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Sodium Borohydride ◽  
Fossil Fuels ◽  
Hydrogen Generation ◽  
Clean Energy ◽  
Catalytic Performance ◽  
Copper Nanowires ◽  
H2 Generation ◽  
Hydrolysis Of ◽  
Hydrolysis Of Nabh4

Hydrogen (H2) is a clean energy carrier which can help to solve environmental issues with the depletion of fossil fuels. Sodium borohydride (NaBH4) is a promising candidate material for solid state hydrogen storage due to its huge hydrogen storage capacity and nontoxicity. However, the hydrolysis of NaBH4 usually requires expensive noble metal catalysts for a high H2 generation rate (HGR). Here, we synthesized high-aspect ratio copper nanowires (CuNWs) using a hydrothermal method and used them as the catalyst for the hydrolysis of NaBH4 to produce H2. The catalytic H2 generation demonstrated that 0.1 ng of CuNWs could achieve the highest volume of H2 gas in 240 min. The as-prepared CuNWs exhibited remarkable catalytic performance: the HGR of this study (2.7 × 1010 mL min−1 g−1) is ~3.27 × 107 times higher than a previous study on a Cu-based catalyst. Furthermore, a low activation energy (Ea) of 42.48 kJ mol−1 was calculated. Next, the retreated CuNWs showed an outstanding and stable performance for five consecutive cycles. Moreover, consistent catalytic activity was observed when the same CuNWs strip was used for four consecutive weeks. Based on the results obtained, we have shown that CuNWs can be a plausible candidate for the replacement of a costly catalyst for H2 generation.

CoO-Co2P composite nanosheets as highly active catalysts for sodium borohydride hydrolysis to generate hydrogen

2020 ◽  
Vol 13 (06) ◽  
pp. 2051025
Author(s):  
Hongyan Liu ◽  
Qianyu Shi ◽  
Yumei Yang ◽  
Ya-Na Yu ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Sodium Borohydride ◽  
Hydrogen Generation ◽  
Sodium Hypophosphite ◽  
X Ray Diffraction ◽  
Water Displacement ◽  
X Ray ◽  
Highly Active ◽  
Naoh Solution ◽  
Adsorption Desorption ◽  
Hydrolysis Of

In this paper, CoO[Formula: see text]Co2P composite nanocatalysts as highly active catalysts were successfully prepared for catalytic hydrolysis of sodium borohydride (NaBH[Formula: see text] to generate hydrogen. For catalyst preparation, pre-synthesized Co(OH)2 nanosheets were uniformly mixed with sodium hypophosphite (NaH2PO[Formula: see text] and then treated through vapor-phase phosphorization process. For characterization, field-emission scanning electron microscopy (FE-SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD), N2 adsorption–desorption measurement and X-ray photoelectric spectroscopy (XPS) were carried out, and traditional water-displacement method was performed to measure the hydrogen generation rate (HGR). It was found that component and catalytic activity of the composites were greatly affected by the ratio of Co(OH)2 to NaH2PO2. When the ratio was 2:1, the obtained catalyst composed of CoO and Co2P presented the highest HGR up to 3.94[Formula: see text]L min[Formula: see text] g[Formula: see text] using a 2[Formula: see text]wt.% NaBH[Formula: see text][Formula: see text]wt.% NaOH solution at [Formula: see text]C, and the apparent activation energy was detected as low as 27.4[Formula: see text]kJ mol[Formula: see text]. Additionally, the optimum CoO[Formula: see text]Co2P catalyst still retains 60% of the initial activity after recycling four times.

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