Efficient hydrogen generation from sodium borohydride hydrolysis using silica sulfuric acid catalyst

Manna, Joydev; Roy, Binayak; Sharma, Pratibha

doi:10.1016/j.jpowsour.2014.11.040

Cited by 55 publications

(22 citation statements)

References 25 publications

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“…Alternatively, chemical hydrogen storage has been proposed as a feasible and sustainable approach, in which a hydrogen-rich material is subjected to a decomposition process and can take place in solid or liquid phase. Possible solid phase compounds as ammonia borane [7], amines [8], or sodium borohydride [9] have been investigated but they present several disadvantages that limit their potential applications [10]. Liquid-phase carriers such as alcohols [11], hydrazine [12], or formic acid (HCOOH), present important advantages as facile transport and safe handling.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Catalytic Performance of Pd/CNFs for Hydrogen Evolution from Additive-Free Formic Acid Decomposition

Sànchez

Motta

Bocelli

et al. 2018

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In recent years, research efforts have focused on the development of safe and efficient H 2 generation/storage materials toward a fuel-cell-based H 2 economy as a long-term solution in the near future. Herein, we report the development of Pd nanoparticles supported on carbon nanofibers (CNFs) via sol-immobilisation and impregnation techniques. Thorough characterisation has been carried out by means of XRD, XPS, SEM-EDX, TEM, and BET. The catalysts have been evaluated for the catalytic decomposition of formic acid (HCOOH), which has been identified as a safe and convenient H 2 carrier under mild conditions. The influence of preparation method was investigated and catalysts prepared by the sol-immobilisation method showed higher catalytic performance (Pd SI /CNF) than their analogues prepared by the impregnation method (Pd IMP /CNF). A high turnover frequency (TOF) of 979 h −1 for Pd SI /CNF and high selectivity (>99.99%) was obtained at 30 • C for the additive-free formic acid decomposition. Comparison with a Pd/AC (activated charcoal) catalyst synthesised with sol-immobilisation method using as a support activated charcoal (AC) showed an increase of catalytic activity by a factor of four, demonstrating the improved performance by choosing CNFs as the preferred choice of support for the deposition of preformed colloidal Pd nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Catalytic Performance of Pd/CNFs for Hydrogen Evolution from Additive-Free Formic Acid Decomposition

Sànchez

Motta

Bocelli

et al. 2018

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“…are the premier materials due to their light weight, high hydrogen storage capacity and ability to release hydrogen at RT through hydrolysis [2]. Sodium borohydride is the most investigated chemical hydride among them due to its high hydrogen storage capacity (10.8 wt%), stability in alkaline solution, non-toxicity and pure hydrogen production [3][4][5]. The hydrolysis reaction of sodium borohydride at STP proceeds as Equation (1) [6].…”

Section: Introductionmentioning

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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“…Silica sulfuric acid (H 2 SO 4 •SiO 2 or SSA, also known as sulfuric acid adsorbed on silica) is a well-known solid acid catalyst with various applications in organic chemistry [26]. It can be obtained by mixing aqueous sulfuric acid with regular chromatography silica gel, followed by water removal at 130 • C (hereafter referred as "wet" SSA or simply SSA) [27][28][29], or by dropping chlorosulfonic acid directly on dry silica (referred as "dry" SSA") [30][31][32]. Its features like low cost, availability, low toxicity, and easy separation from the reaction media spurred us to study the application of the two popular SSA variants (typical loading 2.63 mmol -SO 3 H/g) in the said acetalization process (Figure 2).…”

Section: Resultsmentioning

confidence: 99%

“…In the attempt to compare alternative Brønsted species, orthophosphoric acid was first considered but, when supported on silica (H 3 PO 4 •SiO 2 , 3.0 mmol/g) it gave a disappointing result on acetalization of glycerol (27% isolated yield), suggesting the importance of the acid strength [4]. At this point, finding other candidates seemed not straightforward as monoprotic donors were expected to be devoid of catalytic activity, accordingly to the popular SSA representation based on sulfuric acid esters with surface silanols [22][23][24][25][27][28][29][30][31][32].…”

Section: Resultsmentioning

confidence: 99%

An Expedient Catalytic Process to Obtain Solketal from Biobased Glycerol

et al. 2021

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Developing simple and effective chemistry able to convert industrial waste streams into valuable chemicals is a primary contributor to sustainable development. Working in the context of biodiesel production, we found that plain bisulfate on silica (SSANa, 3.0 mmol/g) proved to be an optimal catalyst to convert glycerol into solketal. With the assistance of a proper anhydrification technique, isolated yields of 96% were achieved working in mild conditions, on 100 g scale.

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Efficient hydrogen generation from sodium borohydride hydrolysis using silica sulfuric acid catalyst

Cited by 55 publications

References 25 publications

Investigation of the Catalytic Performance of Pd/CNFs for Hydrogen Evolution from Additive-Free Formic Acid Decomposition

Investigation of the Catalytic Performance of Pd/CNFs for Hydrogen Evolution from Additive-Free Formic Acid Decomposition

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

An Expedient Catalytic Process to Obtain Solketal from Biobased Glycerol

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Efficient hydrogen generation from sodium borohydride hydrolysis using silica sulfuric acid catalyst

Cited by 55 publications

References 25 publications

Investigation of the Catalytic Performance of Pd/CNFs for Hydrogen Evolution from Additive-Free Formic Acid Decomposition

Investigation of the Catalytic Performance of Pd/CNFs for Hydrogen Evolution from Additive-Free Formic Acid Decomposition

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

An Expedient Catalytic Process to Obtain Solketal from Biobased Glycerol

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