Natural microgranular cellulose as alternative catalyst to metal nanoparticles for H2 production from NaBH4 methanolysis

Şahiner, Nurettin; Demirci, Şahin

doi:10.1016/j.apcatb.2016.09.028

Cited by 110 publications

(44 citation statements)

References 32 publications

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“…The modifications of CBs were carried out in an accord with the literature and with some modifications . The schematic representation of the oxidation and modification reaction of the CBs was presented in Figure A.…”

Section: Resultsmentioning

confidence: 99%

“…The corresponding reaction mechanism catalyzed by CB‐PEI‐HCl is demonstrated in Figure . It is apparent that the higher the number of protonated amine groups on the modified CB, the better the catalytic performances of the catalyst …”

Section: Resultsmentioning

confidence: 99%

“…H 2 is the frontrunner amongst all the sustainable energy carrier as can be attainable from many sources, water splitting through electrolysis that can utilize solar and wind powers, from biomass and natural gas and so on. H 2 is a carbon‐free, environmentally ecological friendly, and possess high‐energy density compared with petroleum‐based fuels . H 2 can also be stored in hydride forms with many metals such as sodium borohydride (NaBH 4 ), lithium borohydride (LiBH 4 ), potassium borohydride (KBH 4 ), aluminum borohydride, and even as ammonium borane (NH 3 BH 3 ) .…”

Section: Introductionmentioning

confidence: 99%

“…The solvents such as water (hydrolysis) and alcohols (methanolysis, ethanolysis, etc) are the most convenient employed solvents . Alcoholysis of NaBH 4 is an important and convenient reaction to generate H 2 in the presence of suitable catalysts . This reaction can offer numerous advantages such as faster reaction kinetics, lower Ea, and ability to generate H 2 at subzero temperatures even in the presence of metal‐free catalysts with readily regeneration capabilities .…”

Section: Introductionmentioning

confidence: 99%

“…Alcoholysis of NaBH 4 is an important and convenient reaction to generate H 2 in the presence of suitable catalysts . This reaction can offer numerous advantages such as faster reaction kinetics, lower Ea, and ability to generate H 2 at subzero temperatures even in the presence of metal‐free catalysts with readily regeneration capabilities . Amidst the solvents, methanol provides some accountable advantages over hydrolysis, as H 2 release from NaBH 4 methanolysis can be conveniently run at low temperatures (T < 0°C) efficiently, eg, −20°C, abiding by the following equation:

{NaBH}_{4} + {4CH}_{3} OH \to NaB {({OCH}_{3})}_{4} + {4H}_{2} .

…”

Section: Introductionmentioning

confidence: 99%

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Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis

Ari

Sunol

et al. 2019

Int J Energy Res

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Summary Carbon black (CB) obtained from used car tire rubbers were treated with concentrated sulfuric and nitric acids. The oxidized CB (CB‐COO‐Na+) is subsequently modified with epichlorohydrin (ECH) and amines including polyethylene imine (PEI). These modified CBs such as CB‐PEI are used as metal‐free catalysts in methanolysis of sodium borohydride (NaBH4) to produce hydrogen. The hydrogen generation rate (HGR) of 3089 ± 44.69 mL.min‐1.g‐1 is accomplished at room temperature with CB‐PEI‐hydrochloric acid (HCl) catalyst. The resulting activation energy of 34.7 kJ/mol for the temperature range of −20°C to +30°C compares favorably to most of alternative catalysts reported in literature while reaction catalyzing capabilities of CB‐PEI‐HCl particles extend to the subzero temperature range (−20°C‐0°C). The reuse and regeneration studies conducted for the CB‐PEI‐HCl catalyst showed that these catalysts do provide complete conversion at every use up to five consecutive runs and retain 50 ± 2.5% of the original hydrogen generation rate at the fifth consecutive reuse. The CBs‐based catalysts are fully regenerated with HCl treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

{NaBH}_{4} + {4CH}_{3} OH \to NaB {({OCH}_{3})}_{4} + {4H}_{2} .

…”

Section: Introductionmentioning

confidence: 99%

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Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis

Ari

Sunol

et al. 2019

Int J Energy Res

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Chitosan hydrogel wrapped bimetallic nanoparticles based efficient catalysts for the catalytic removal of organic pollutants and hydrogen production

Bakhsh

Khan

Akhtar

et al. 2022

Applied Organom Chemis

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A novel catalytic system based on bimetallic nanoparticles entrapped chitosan hydrogel container (Cu–Ag/CH, Cu–Co/CH, Cu–Ni/CH) was prepared. The developed catalytic system was applied for production of H2 from water and methanol and reduction of 4‐nitrophenol (4‐NP), 3‐nitrophenol, 2‐nitrophenol, 2,6‐dinitrophenol, methylene blue, congo red (CR), methyl orange, acridine orange, and potassium ferricynide (K3[Fe(CN)6]). The developed catalytic system has shown tremendous performance and exhibited high efficiency as a catalyst for water treatment and H2 generation. Among all the nanocatalysts, Cu–Co/CH was more efficient in catalytic H2 generation while Cu–Ni/CH was more efficient in catalytic reduction of toxic contaminants. Further, various parameters like amount of NaBH4, catalyst quantity, pollutant concentration, and temperature were optimized to enhance the effectiveness of catalytic system for fast production of H2 and reduction of toxins. Moreover, the recyclability of the catalyst was investigated, where slight decrease in reduction time was noted.

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Spirulina microalgal strain as efficient a metal‐free catalyst to generate hydrogen via methanolysis of sodium borohydride

2019

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Natural microgranular cellulose as alternative catalyst to metal nanoparticles for H2 production from NaBH4 methanolysis

Cited by 110 publications

References 32 publications

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis

Chitosan hydrogel wrapped bimetallic nanoparticles based efficient catalysts for the catalytic removal of organic pollutants and hydrogen production

Spirulina microalgal strain as efficient a metal‐free catalyst to generate hydrogen via methanolysis of sodium borohydride

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Natural microgranular cellulose as alternative catalyst to metal nanoparticles for H2 production from NaBH4 methanolysis

Cited by 110 publications

References 32 publications

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H 2 release studies from sodium borohydride methanolysis

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H 2 release studies from sodium borohydride methanolysis

Chitosan hydrogel wrapped bimetallic nanoparticles based efficient catalysts for the catalytic removal of organic pollutants and hydrogen production

Spirulina microalgal strain as efficient a metal‐free catalyst to generate hydrogen via methanolysis of sodium borohydride

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Product

Resources

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Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H ₂ release studies from sodium borohydride methanolysis