Pd-C powder and thin film catalysts for hydrogen production by hydrolysis of sodium borohydride

Patel, N.; Patton, B.; Zanchetta, C.; Fernandes, R.; Guella, Graziano; Кале, А.; Miotello, A.

doi:10.1016/j.ijhydene.2007.07.018

Cited by 181 publications

(84 citation statements)

References 22 publications

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“…It was found that the cone-like structure on the surface of the Pd film, which developed through Ar + ion bombardment, did not enhance the catalytic activity of the Pd, and Pd/C films showed higher catalytic activity in comparison to Pd/C powders when the same amount of catalyst was used. [30] Besides the Pt-and Pd-based materials, some other non-noble transition metals, especially Co, also exhibit good activities. [31][32][33][34][35][36] With a fluorinated cobalt catalyst, hydrogen can be released from an aqueous NaBH 4 solution within 2.5 min (molar ratio: Co/NaBH 4 = 0.0056).…”

Section: Catalytic Hydrolysis Of Sodium and Lithium Borohydridesmentioning

confidence: 99%

Liquid‐Phase Chemical Hydrogen Storage: Catalytic Hydrogen Generation under Ambient Conditions

et al. 2010

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There is a demand for a sufficient and sustainable energy supply. Hence, the search for applicable hydrogen storage materials is extremely important owing to the diversified merits of hydrogen energy. Lithium and sodium borohydride, ammonia borane, hydrazine, and formic acid have been extensively investigated as promising hydrogen storage materials based on their relatively high hydrogen content. Significant advances, such as hydrogen generation temperatures and reaction kinetics, have been made in the catalytic hydrolysis of aqueous lithium and sodium borohydride and ammonia borane as well as in the catalytic decomposition of hydrous hydrazine and formic acid. In this Minireview we briefly survey the research progresses in catalytic hydrogen generation from these liquid-phase chemical hydrogen storage materials.

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Section: Catalytic Hydrolysis Of Sodium and Lithium Borohydridesmentioning

confidence: 99%

Liquid‐Phase Chemical Hydrogen Storage: Catalytic Hydrogen Generation under Ambient Conditions

et al. 2010

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“…Different catalysts, such as ruthenium (Ru) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], platinum (Pt) [18,19], palladium (Pd) [20], nickel (Ni) [21,22], cobalt (Co) [21,23,24], Co-B [25,26], Ni-B [27], Ni-Co-B [28], carbon nanotubes (CNT) [29], have been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production from sodium borohydride for fuel cells in presence of electrical field

Şahi̇n

Dolaş

Kaya

et al. 2009

Int. J. Energy Res.

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SUMMARYSodium borohydride (NaBH 4 ) reacts with water to produce 4 mol of hydrogen per mol of compound at room temperature. Under certain conditions, it was found that 6 mol of hydrogen per mol of sodium borohydride was produced in the presence of electrical field created by DC voltages, whereas 4 mol of hydrogen was produced in the presence of catalyst per mole of sodium borohydride. Electrical field created by alternative current with three different waves (sin, square and triangle type) increases the hydrolysis of sodium borohydride. It was found that hydrogen produced from sodium borohydride by applying an electrical field can be effectively used for both increasing the electrolysis of water and hydrolysis of sodium borohydride. The hydrolysis reaction was carried out at temperature of 20, 30, 40 and 601C in the presence of electrical field created by AC voltages square wave. The experimental data were fitted to the kinetic models of zero-order, first-order and nth-order. The results indicate that the first-order and nth-order model give a reasonable description of the hydrogen generation rate at the temperature higher than 301C. Reaction rate constant at different temperatures were determined from experimental data, and activation energy was found to be 50.20 and 52.28 kJ mol À1for first-order and nth-order, respectively.

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“…Transition metals (usually supported on some carriers for practical applications) are regarded as the most efficient catalysts [9,10], which is promising for on-board application. Recently, many new forms of transition metal catalysts have been developed, such as nickel based powder [11], metal alloy catalysts [12], Pd supported on carbon [13], nickel borides [14], filamentary nickel mixed Co catalyst [15] and Ru supported on a resin [7].…”

Section: Introductionmentioning

confidence: 99%

Kinetic study of NaBH4 hydrolysis over carbon-supported ruthenium

Shang

Chen

Jiang

2008

International Journal of Hydrogen Energy

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The effects of temperature and the concentrations of NaBH 4 , NaBO 2 and NaOH on the rate of NaBH 4 hydrolysis over carbon supported ruthenium catalyst were investigated using isothermal rate data extracted from non-isothermal reactions. It was shown that the hydrolysis was a zero-order reaction with respect to the concentration of NaBH 4 and the reaction rate decreased with the increase of OH -concentration. A rate expression was then derived to correlate the hydrolysis rate with the temperature and NaOH concentration.

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Pd-C powder and thin film catalysts for hydrogen production by hydrolysis of sodium borohydride

Cited by 181 publications

References 22 publications

Liquid‐Phase Chemical Hydrogen Storage: Catalytic Hydrogen Generation under Ambient Conditions

Liquid‐Phase Chemical Hydrogen Storage: Catalytic Hydrogen Generation under Ambient Conditions

Hydrogen production from sodium borohydride for fuel cells in presence of electrical field

Kinetic study of NaBH4 hydrolysis over carbon-supported ruthenium

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