A remarkable Mo doped Ru catalyst for hydrogen generation from sodium borohydride: the effect of Mo addition and estimation of kinetic parameters

Hansu, Tulin Avci; Şahi̇n, Ömer; Çağlar, Aykut; Kıvrak, Hilal

doi:10.1007/s11144-020-01884-8

Cited by 34 publications

(14 citation statements)

References 40 publications

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“…Moreover, upon discussing the reaction order relative to NaBH 4 , the reaction order of n values was found to be first-order kinetics using the trial and error method. [66][67][68] This result can be verified by plotting lnC t vs time for the different catalyst weights, where C t represents the remained concentration of the hydride at different time intervals, the obtained plots are shown in Figure 8b. The slope of the fitted lines of these plots gives the rate constant (K) value whereas the intercept corresponds to "ln a" where "a" is the initial volume of hydrogen produced, the results are shown in Table 3.…”

Section: Effect Of Catalyst Weightsupporting

confidence: 54%

“…Figure 8a indicates that as the catalyst weight increases, the time needed to end the reaction decreases whereas the hydrogen completion volume increases. Moreover, upon discussing the reaction order relative to NaBH 4 , the reaction order of n values was found to be first‐order kinetics using the trial and error method 66–68 . This result can be verified by plotting lnC t vs time for the different catalyst weights, where C t represents the remained concentration of the hydride at different time intervals, the obtained plots are shown in Figure 8b.…”

Section: Resultsmentioning

confidence: 56%

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CuMOF@Faujasite nanocomposite as a novel catalyst for hydrogen production

Said,

Dardir,

Gabr

et al. 2024

Applied Organom Chemis

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Energy production is one of the most crucial issues presently attracting global attention. In this work, a CuMOF@Faujasite nanocomposite was synthesized and utilized as a novel efficient catalyst for hydrogen production. The produced composite was first characterized using X‐ray diffraction (XRD), Fourier‐ transform infrared (FT‐IR), thermogravimetric analysis (TGA), and differential scanning calorimetry. Surface properties were analyzed via nitrogen adsorption–desorption isotherms. All characterization results revealed the formation of a pure and well‐defined crystalline phase, with a high specific surface area (SBET) of 286 m2/g (SBET of Faujasite is 35 m2/g). Moreover, the morphology and compositional analysis of the nanocomposite were assured through the scanning (SEM) and transmission (TEM) electron microscope and X‐ray photospectroscopy (XPS). SEM and TEM images revealed sponge‐like spheres that are related to Faujasite besides small spherical particles related to CuBDC MOF. XPS analysis revealed a low content of CuMOF in the nanocomposite. The catalytic activity of the nanocomposite was tested for the dehydrogenation of NaBH4. The impact of NaBH4 concentration, weight of the catalyst, and the reaction temperature on NaBH4 hydrolysis was investigated. A hydrogen generation rate (HGR) of 484 mLmin−1 g−1 at 30 °C was achieved using 50 mg of the catalyst and 0.05 mol/l of NaBH4 owing to the high specific area and the selective active sites for such hydrolytic reaction. The kinetic analysis of the activity data indicates the first‐order behavior at low concentrations of NaBH4. Furthermore, at concentrations ≥0.065 mol L−1, zero‐order kinetics was predominant. The time needed for completion of the hydrolysis reaction was found to be decreased (~20 min) by increasing the catalyst mass as well as NaBH4 concentration or even by elevating the reaction temperature (~4 min at 60 °C). The activation energy was estimated; it was found to be 70.5 KJ mol−1. Ultimately, our catalyst showed a reasonable rate of hydrogen production, as compared to others reported earlier.

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Section: Effect Of Catalyst Weightsupporting

confidence: 54%

Section: Resultsmentioning

confidence: 56%

CuMOF@Faujasite nanocomposite as a novel catalyst for hydrogen production

Said,

Dardir,

Gabr

et al. 2024

Applied Organom Chemis

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“…Finally, the H 2 generation reactions that were carried out at different temperatures of 298–313 K are given in Figure c. According to the Arrhenius plot of ln k versus 1/ T , the apparent E a was calculated to be approximately 63.11 kJ·mol –1 . − …”

Section: Resultsmentioning

confidence: 99%

Catalytic Hydrolysis of Sodium Borohydride for Hydrogen Production Using Magnetic Recyclable CoFe₂O₄-Modified Transition-Metal Nanoparticles

Wang

Liu

2021

ACS Appl. Nano Mater.

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Sodium borohydride (NaBH 4 ) has been widely regarded as the one of most promising further hydrogen (H 2 )generated materials for the safe storage, transportation, and utilization of H 2 . Therefore, the exploration of more efficient catalytic systems for on-demand H 2 evolution via NaBH 4 hydrolysis is critical. Herein, a series of magnetic recyclable cobalt ferrite (CoFe 2 O 4 )-modified transition-metal nanoparticles (including Ru, Pd, Rh, Pt, Ir, and Ag) for the catalytic hydrolytic dehydrogenation of NaBH 4 for H 2 evolution have been developed for the first time. The order of the catalytic activity is Ru > Pd > Rh > Pt > Ir > Ag, indicating that Ru/ CoFe 2 O 4 and Pd/CoFe 2 O 4 are the most active, with turnover frequencies of 421 and 348 mol H 2 •mol cat −1 •min −1 . By comparing with other carriers, we found the key factor to be CoFe 2 O 4 in facilitating H 2 production upon the hydrolytic dehydrogenation of NaBH 4 in this work. KEYWORDS: sodium borohydride (NaBH 4 ), hydrogen evolution, CoFe 2 O 4 , nanoparticles, hydrolysis

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“…Fuel cells are an alternative energy source that converts chemical energy into electrical energy, using clean, efficient, and cheap fuel [1,2] . Recently, it is an energy source that has been the focus of attention of researchers in response to the problem of environmental pollution and increasing energy demand [3,4] .…”

Section: Introductionmentioning

confidence: 99%

“…Fuel cells are an alternative energy source that converts chemical energy into electrical energy, using clean, efficient, and cheap fuel. [1,2] Recently, it is an energy source that has been the focus of attention of researchers in response to the problem of environmental pollution and increasing energy demand. [3,4] Direct fuel cells using fuels such as formic acid, [5,6] methanol, [7,8] ethanol, [9,10] ethylene glycol, [11] and glucose [12][13][14] are recognized as emerging power sources for electric vehicles and portable electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube Supported CdM(S, Se)/CdTe Anode Catalysts for Electrooxidation of Glucose in Alkaline Media

2023

Self Cite

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The sequential sodium borohydride (SBH, NaBH4) reduction method was utilized to prepare the 0.1 % CdSe/CNT, 0.1 % CdS/CNT, 0.1 % (CdS−CNT)/CdTe, and 0.1 % (CdSe−CNT)/CdTe catalysts. The XRD, SEM‐EDS, TEM, and XPS analyses were used to characterize the catalysts. The electrochemical measurements were examined by cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) analyses for glucose electrooxidation. The characterization analyses revealed that the desired structure was formed on the support material. The electrochemical analysis results indicated that the 0.1 % (CdSe−CNT)/CdTe catalyst has higher catalytic activity, stability, and resistance compared to other catalysts with a specific activity of 2.4 mA cm−2.

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A remarkable Mo doped Ru catalyst for hydrogen generation from sodium borohydride: the effect of Mo addition and estimation of kinetic parameters

Cited by 34 publications

References 40 publications

CuMOF@Faujasite nanocomposite as a novel catalyst for hydrogen production

CuMOF@Faujasite nanocomposite as a novel catalyst for hydrogen production

Catalytic Hydrolysis of Sodium Borohydride for Hydrogen Production Using Magnetic Recyclable CoFe₂O₄-Modified Transition-Metal Nanoparticles

Carbon Nanotube Supported CdM(S, Se)/CdTe Anode Catalysts for Electrooxidation of Glucose in Alkaline Media

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A remarkable Mo doped Ru catalyst for hydrogen generation from sodium borohydride: the effect of Mo addition and estimation of kinetic parameters

Cited by 34 publications

References 40 publications

CuMOF@Faujasite nanocomposite as a novel catalyst for hydrogen production

CuMOF@Faujasite nanocomposite as a novel catalyst for hydrogen production

Catalytic Hydrolysis of Sodium Borohydride for Hydrogen Production Using Magnetic Recyclable CoFe2O4-Modified Transition-Metal Nanoparticles

Carbon Nanotube Supported CdM(S, Se)/CdTe Anode Catalysts for Electrooxidation of Glucose in Alkaline Media

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Catalytic Hydrolysis of Sodium Borohydride for Hydrogen Production Using Magnetic Recyclable CoFe₂O₄-Modified Transition-Metal Nanoparticles