Catalytic hydrogen generation from NaBH 4 /H 2 O system: effects of catalyst and promoters

Kaur, Arshdeep; Gangacharyulu, D.; Bajpai, Pratima

doi:10.1590/0104-6632.20180351s20150782

Cited by 8 publications

(5 citation statements)

References 29 publications

(28 reference statements)

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“…With high calorific value, it is also termed as regenerative and environmentally friendly fuel. Additionally, it has energy density of 142 ML/kg, which is three times of petroleum (47 MJ/kg) (Kaur et al, 2016). This makes hydrogen as the most efficient fuel to replace petroleum-based vehicular.…”

Section: Hydrogen Storagementioning

confidence: 99%

Hydrogen Energy as Future of Sustainable Mobility

Chakraborty

Dash²,

Elavarasan³

et al. 2022

Front. Energy Res.

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Conventional fuels for vehicular applications generate hazardous pollutants which have an adverse effect on the environment. Therefore, there is a high demand to shift towards environment-friendly vehicles for the present mobility sector. This paper highlights sustainable mobility and specifically sustainable transportation as a solution to reduce GHG emissions. Thus, hydrogen fuel-based vehicular technologies have started blooming and have gained significance following the zero-emission policy, focusing on various types of sustainable motilities and their limitations. Serving an incredible deliverance of energy by hydrogen fuel combustion engines, hydrogen can revolution various transportation sectors. In this study, the aspects of hydrogen as a fuel for sustainable mobility sectors have been investigated. In order to reduce the GHG (Green House Gas) emission from fossil fuel vehicles, researchers have paid their focus for research and development on hydrogen fuel vehicles and proton exchange fuel cells. Also, its development and progress in all mobility sectors in various countries have been scrutinized to measure the feasibility of sustainable mobility as a future. This, paper is an inclusive review of hydrogen-based mobility in various sectors of transportation, in particular fuel cell cars, that provides information on various technologies adapted with time to add more towards perfection. When compared to electric vehicles with a 200-mile range, fuel cell cars have a lower driving cost in all of the 2035 and 2050 scenarios. To stimulate the use of hydrogen as a passenger automobile fuel, the cost of a hydrogen fuel cell vehicle (FCV) must be brought down to at least the same level as an electric vehicle. Compared to gasoline cars, fuel cell vehicles use 43% less energy and generate 40% less CO2.

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Section: Hydrogen Storagementioning

confidence: 99%

Hydrogen Energy as Future of Sustainable Mobility

Chakraborty

Dash²,

Elavarasan³

et al. 2022

Front. Energy Res.

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“…The presence of sodium aluminates in the solution prevents the formation of a passive layer on the aluminium surface (Gai et al, 2014;Gai et al, 2015). Therefore, sodium aluminate acts as a barrier to the formation of a hydroxide layer and speeds up the interaction of Co ions with alumina (Kaur et al, 2018;Kanturk et al, 2008;Li et al, 2005;Buchner et al, 1999). Thus, the concentration of NaOH is an important parameter for improving the hydrolysis of NaBH 4 and Al.…”

Section: Effect Of Naoh On Hydrogen Generation Rate (Hgr)mentioning

confidence: 99%

“…Therefore, alumina promotes the catalytic activity of Co x B active species in the solution. Moreover, Clas an anion has maximum solubility in the solution based on the coefficient of diffusivity, that is higher for Clions when compared with anions of other salts like CoCl 2 .6H 2 O, CoSO 4 .7H 2 O, (CH 3 COO) 2 Co.4H 2 O, Co(NO 3 ) 2 .H 2 O, CdSO 4 , or CuSO 4 .5H 2 O (Kaur et al, 2018). This improves the kinetics of the system by significantly affecting the hydrolysis of NaBH 4 .…”

Section: Effect Of Cocl 2 As Catalyst On the Hgrmentioning

confidence: 99%

KINETIC STUDIES OF HYDROLYSIS REACTION OF NaBH4 WITH γ-Al2O3 NANOPARTICLES AS CATALYST PROMOTER AND CoCl2 AS CATALYST

Kaur

Gangacharyulu

Bajpai

2019

Braz. J. Chem. Eng.

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Solid-state hydrogen storage is of considerable concern as a potential hydrogen source for portable fuel cell applications. This study mainly focuses on kinetics of NaBH 4 /Al 2 O 3 nanoparticles (20 nm)/H 2 O system with CoCl 2 as catalyst and the factors that affect the hydrogen generation rate (HGR). It is observed that the reaction rate increases considerably with increase in NaBH 4 , Al 2 O 3 nanoparticle (20 nm), CoCl 2 and NaOH concentrations and the respective reaction orders are calculated. Hydrogen generation rate is also investigated at different temperatures (303, 313, 323 and 333 K) for constant NaBH 4 (1.25 moles/L), NaOH (1.4 moles/L), CoCl2 (0.02 moles/L) and Al 2 O 3 (0.09 moles/L) concentrations. Kinetics of the NaBH 4 hydrolysis reaction increases with γ-Al 2 O 3 nanoparticles and the calculated activation energy is 29 kJ/moles. This study also reports that a combined dual-solid-fuel system is highly efficient in terms of hydrogen storage capacities compared with a single hydride based system. Maximum hydrogen generation efficiency, observed at a mass ratio of 0.09: 0.7 (Al 2 O 3 /NaBH 4), is 99.34%.

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“…The presence of metal nanoparticles on graphene sheets would lead to more acceptable activity and stability of the materials for various applications 33 , 34 . Due to the high cost of noble metals, cheaper metals such as Fe, Ni, and Co could be replaced for this purpose 35 .…”

Section: Introductionmentioning

confidence: 99%

Three component synthesis of triazolo[1,2-a]indazole-trione and spiro triazolo[1,2-a]indazole-tetraones using GO/SiO2/Co (II)

Mirheidari

Safaei‐Ghomi

2022

Sci Rep

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In this study, a functionalized graphene oxide catalyst (GO/f-SiO2/Co) was successfully synthesized by decorating the graphene oxide surface using the attachment of hybrid silane (silica/nitrogen) and chelation with Co (II). The catalyst has been characterized by Fourier Transform Infrared (FT-IR), powder X-ray diffraction (XRD), Energy Dispersive X-ray (EDX), Scanning Electron Microscopy (SEM), Transmission electron microscopy (TEM), Raman spectra, Brunauer–Emmett–Teller (BET), and Thermal Gravimetric (TGA) analyses. The synthesized catalyst was used as an effective heterogeneous catalyst for the synthesis of triazolo[1,2-a]indazole-trione and spiro triazolo[1,2-a]indazole-tetraones derivatives under solvent-free conditions at 90 °C. The high thermal stability, corrosion resistance, and ability of the catalyst to recycle make the catalyst favorable. In addition, easy work-up procedure and short reaction time with high conversion yields (91–97%) are some benefits of the current method.

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Catalytic hydrogen generation from NaBH 4 /H 2 O system: effects of catalyst and promoters

Cited by 8 publications

References 29 publications

Hydrogen Energy as Future of Sustainable Mobility

Hydrogen Energy as Future of Sustainable Mobility

KINETIC STUDIES OF HYDROLYSIS REACTION OF NaBH4 WITH γ-Al2O3 NANOPARTICLES AS CATALYST PROMOTER AND CoCl2 AS CATALYST

Three component synthesis of triazolo[1,2-a]indazole-trione and spiro triazolo[1,2-a]indazole-tetraones using GO/SiO2/Co (II)

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