Preparation of ultrafine nickel powder and its catalytic dehydrogenation activity

Gao, Jinzhang; Guan, Fei; Zhao, Yinan; Wu, Yang; Ma, Yongjun; Lu, Xiaoquan; Hou, Jingguo; Kang, Jingwan

doi:10.1016/s0254-0584(01)00275-9

Cited by 93 publications

(44 citation statements)

References 12 publications

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“…Ammonium perchlorate (AP) is widely used as an oxidiser in compsite solid propellants [1][2] . The ballistics of a composite propellant can be improved by adding a catalyst such as ferric oxide (Fe 2 O 3 ), copper oxide (CuO), copper chromite (CuO.Cr 2 O 3 ), nickel oxide (NiO), etc, which accelerates the rate of decomposition of AP [3][4][5][6] . Recent investigations have shown that nanoparticles of transition metal oxides, without any agglomeration can increase the burning rate 7 .…”

Section: Introductionmentioning

confidence: 99%

Thermal Decomposition of Ammonium Perchlorate in thePresence of Nanosized Ferric Oxide

Joshi

Patil

Krishnamurthy

2008

DSJ

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The catalytic effect of two different sizes of a-Fe 2 O 3 nanoparticles synthesised using an electrochemical method was investigated on the thermal decomposition of ammonium perchlorate (AP) using differential scanning calorimetry as a function of catalyst concentration. The nanosized ferric oxide particles exhibited more of a catalytic effect on the thermal decomposition of AP than commercial Fe 2 O 3 particles. A lowering of the high-temperature decomposition of AP by 59 o C was observed after mixing with 2 Wt per cent of a-Fe 2 O 3 particles with the very fine size of 3.5 nm. The mixture produced a high heat release of 4.574 kJ/ g compared to 0.834 kJ/g of pure AP. The kinetic parameters were evaluated using Kissinger method. The decrease in the activation energy and increase in rate constant confirmed the catalytic activity of these nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Thermal Decomposition of Ammonium Perchlorate in thePresence of Nanosized Ferric Oxide

Joshi

Patil

Krishnamurthy

2008

DSJ

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“…The role of Na 2 CO 3 in the synthesis of nickel sea urchin-like particles is interesting. In some reports, Na 2 CO 3 was used as an additive to control the pH value of the solution (Gao et al, 2001). But in our method, the pH value of the solution was about 13.0.…”

Section: Formation Mechanism Of Sea Urchin-like Nickel Particlesmentioning

confidence: 76%

Preparation of Sea Urchin-Like Nickel Particles under Rapid Wet Chemical Process

Sugawara

2009

J. Chem. Eng. Japan

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Metallic nickel particles with sea urchin-like shape have been prepared by rapidly chemical reduction of aqueous nickel sulfate solution with hydrazine. The phase structure and morphology of the particles have been investigated in view of the reduction temperature as well as the addition of sodium carbonate and surfactants. BET specific surface area measurement showed that the particles obtained at 89 • C had the roughest surfaces. The probable formation mechanism of the sea urchin-like particles was also discussed.

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“…12,18,19 In the present work, nickel nanoparticles and fullerene (C 60 ) have been used to prepare a novel nanocomposites that incorporates the magnetic properties of the nickel nanoparticles and the efficient catalytic activity of nanosized carbon materials. 6,10 The Langmuir-Hinshelwood mechanism has been used to model the surface-controlled reaction and to analyze the kinetics of the reaction.…”

Section: 17mentioning

confidence: 99%

Kinetics and Catalytic Activity of Carbon-Nickel Nanocomposites in the Reduction of 4-Nitrophenol

Li¹,

Ko²,

Ko³

2015

Elastomers and Composites

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Carbon-nickel nanocomposites were prepared by the reaction of fullerene (C 60 ) and nickel hydroxide in an electric furnace at 700°C for 2 h. The hybrid carbon-nickel nanocomposites were characterized by X-ray diffraction, Raman spectroscopy, and scanning electron microscopy. The kinetics and catalytic activity of the carbon-nickel nanocomposites in the reduction of 4-nitrophenol were confirmed by UV-vis spectroscopy.

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Preparation of ultrafine nickel powder and its catalytic dehydrogenation activity

Cited by 93 publications

References 12 publications

Thermal Decomposition of Ammonium Perchlorate in thePresence of Nanosized Ferric Oxide

Thermal Decomposition of Ammonium Perchlorate in thePresence of Nanosized Ferric Oxide

Preparation of Sea Urchin-Like Nickel Particles under Rapid Wet Chemical Process

Kinetics and Catalytic Activity of Carbon-Nickel Nanocomposites in the Reduction of 4-Nitrophenol

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