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Ермакова, М. А.; Ermakov, D. Yu.; Лебедев, М. В.; Рудина, Н. А.; Kuvshinov, G. G.

doi:10.1023/a:1019019317391

Cited by 29 publications

(27 citation statements)

References 30 publications

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“…For supported nickel catalyst and based on a number of observations [14][15][16][17][18], it was deduced that, with increasing temperature (e.g. 500°C ?…”

Section: Introductionmentioning

confidence: 99%

Methane decomposition using Ni–Cu alloy nano-particle catalysts and catalyst deactivation studies

Wang

Lua

2015

Chemical Engineering Journal

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“…For supported nickel catalyst and based on a number of observations [14][15][16][17][18], it was deduced that, with increasing temperature (e.g. 500°C ?…”

Section: Introductionmentioning

confidence: 99%

Methane decomposition using Ni–Cu alloy nano-particle catalysts and catalyst deactivation studies

Wang

Lua

2015

Chemical Engineering Journal

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“…Depending on their preparation method, they can be made with varied stoichiometries, which can affect their chemical properties significantly [2]. Nickel(II) oxide is a semiconductor and it is also used in supported catalysts for several chemical transformations including the reformation of methane with CO 2 [5], and the oxidation of H 2 S to sulfur [6].…”

Section: Introductionmentioning

confidence: 99%

Monolithic nickel(II)-based aerogels using an organic epoxide: the importance of the counterion

Gash

Satcher

Simpson

2004

Journal of Non-Crystalline Solids

123

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The synthesis and characterization of nickel(II)-based aerogel materials prepared using the epoxide addition method is described. The addition of the organic epoxide propylene oxide to an ethanolic solution of NiCl 2 AE 6H 2 O resulted in the formation of an opaque light green monolithic gel and subsequent drying with supercritical CO 2 gave a monolithic aerogel material of the same color. This material has been characterized using powder X-ray diffraction, electron microscopy, elemental analysis, and nitrogen adsorption/ desorption analysis. The results indicate that the nickel(II)-based aerogel has very low bulk density (98 kgm À3 ($ 98% porous)), high surface area (413 m 2 g À1 ), and has a particulate-type aerogel microstructure made up of very fine spherical particles with an open porous network. By comparison, a precipitate of Ni 3 (NO 3 ) 2 (OH) 4 is obtained when the same preparation is attempted with the common Ni(NO 3 ) 2 AE 6H 2 O salt as the precursor. The implications of the difference of reactivity of the two different precursors are discussed in the context of the mechanism of gel formation via the epoxide addition method. The synthesis of nickel(II)-based aerogel, using the epoxide addition method, is especially unique in our experience. It is our first example of the successful preparation of a metal-oxide-based aerogel using a divalent metal ion and may have implications for the application of this method to the preparation of aerogels or nanoparticles of other divalent metal oxides. To our knowledge this is the first report of a monolithic pure nickel(II)-based aerogel materials.

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“…On the other hand, Ermakova et al . [18,19] reported that the maximum yield of CNFs was observed at a particle size of 10-40 nm. The difference is possibly because the catalysts in their work were prepared by impregnation and the Ni loading was 90%.…”

Section: Cnfs Growth Rate and Yieldmentioning

confidence: 99%

Catalytic decomposition of methane over supported Ni catalysts with different particle sizes

Sun

Sui

Zhou

et al. 2009

Asia-Pacific J Chem Eng

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Methane decomposition on γ -Al 2 O 3 -supported Ni catalysts, as a method for the production of carbon nanofibers (CNFs) and CO-free hydrogen, has been investigated to show the effect of catalyst particle size on the rate and yield of CNFs formation. The catalysts were prepared by deposition-precipitation with different calcination temperature ranging from 725 to 1025 K so as to have different initial particle sizes. The results show that catalysts with smaller initial particle sizes had higher initial growth rate but experienced fast deactivation. The lifetime of the catalyst, ending at the inflection point on the rate curve of CNFs growth, could well represent the yield of CNFs of the catalyst, and the maximal yield of CNFs was achieved on the Ni catalysts calcinated at 823 K and with a particle size of around 56 nm. However, the diameters of the grown CNFs were not directly related to the initial size of the catalysts, because of particle sintering and breaking during catalyst reduction or CNFs formation. 

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Cited by 29 publications

References 30 publications

Methane decomposition using Ni–Cu alloy nano-particle catalysts and catalyst deactivation studies

Methane decomposition using Ni–Cu alloy nano-particle catalysts and catalyst deactivation studies

Monolithic nickel(II)-based aerogels using an organic epoxide: the importance of the counterion

Catalytic decomposition of methane over supported Ni catalysts with different particle sizes

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