A structured Co–B catalyst for hydrogen extraction from NaBH4 solution

Lee, Jae-Young; Kong, Kyung Yong; Jung, Chang Ryul; Cho, Eunae; Yoon, Sung Pil; Han, Jonghee; Lee, Tai Gyu; Nam, Suk Woo

doi:10.1016/j.cattod.2006.09.019

Cited by 195 publications

(68 citation statements)

References 20 publications

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“…[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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“…In situ hydrogen supply technique is one of the key issues for the commercialization of the PEMFC. Recently, hydrogen generation from NaBH 4 hydrolysis is proved to be a feasible hydrogen supply method for the PEMFC [1], which can be promoted by using ex situ [1][2][3][4][5][6][7] or in situ [8][9][10][11] synthesized catalysts during the hydrogen generation reaction. Also, the by-product NaBO 2 is environmentally clean and can be recycled for synthesizing NaBH 4 [12].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, metal borides were studied extensively as high efficient catalysts for NaBH 4 hydrolysis, among which cobalt boride-based catalysts are the most attractive ones [2,5,7,[13][14][15][16][17][18][19]. To meet the requirements of practical applications, some other metal borides, such as nickel boride [20,21] and ferric boride [8], were also evaluated.…”

Section: Introductionmentioning

confidence: 99%

Ni–Co–B catalyst-promoted hydrogen generation by hydrolyzing NaBH4 solution for in situ hydrogen supply of portable fuel cells

Bai

Danxian

et al. 2011

Catalysis Today

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“…Those of nano-particles which represent magnetic characteristics cover applications in magnetic storage devices, ferrofluids, magnetic refrigeration systems, contrast enhancement in magnetic resonance imaging, magnetic carries for drug targeting and catalysis 3,4 . Among various magnetic nano-particles, Co-B particles have been extensively studied [5][6][7][8] due to their excellent electrochemical, magnetic, and catalytic…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF AMMONIA SOLUTION ON COMPOSITION, STRUCTURE AND MAGNETIC PROPERTIES OF CHEMICALLY PREPARED Co-B NANO-PARTICLES

Sabarou

Ataie

2012

Int. J. Mod. Phys. Conf. Ser.

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In this study, the effect of ammonia solution addition as a pH adjusting component on the thermal behavior, phase composition, morphology, and magnetic properties of reduced Co-B nano-particles fabricated by chemical reduction route have been studied using DSC, XRD, SEM, and VSM techniques, respectively. Chemical composition of the samples was measured by ICP. The ICP results showed that basic pH of reagent solution, derived from utilizing ammonia solution, caused the boron content to decrease. XRD results indicated an amorphous structure for both samples synthesized with and without ammonia solution. Analysis of the DSC results showed that crystallization behavior has dramatically altered, owing to utilize ammonia solution. While the sample synthesized without ammonia solution showed three distinctive exothermic peaks at 216,470, and 540℃, the sample synthesized in the presence of ammonia solution exhibited only two exothermic peaks at 235 and 470℃ and one endothermic peak at 370℃. SEM images reveal that the samples have a net-like morphology and the net is formed by many interconnected spherical fine particles with sizes less than 100 nm. Saturation magnetization of the sample synthesized in the presence of ammonia solution has improved significantly, probably due to the less amount of boron.

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A structured Co–B catalyst for hydrogen extraction from NaBH4 solution

Cited by 195 publications

References 20 publications

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

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

Ni–Co–B catalyst-promoted hydrogen generation by hydrolyzing NaBH4 solution for in situ hydrogen supply of portable fuel cells

EFFECT OF AMMONIA SOLUTION ON COMPOSITION, STRUCTURE AND MAGNETIC PROPERTIES OF CHEMICALLY PREPARED Co-B NANO-PARTICLES

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