Study on Chemical Reactivity Control of Sodium by Suspended Nanoparticles I

Ara, K.; Sugiyama, Ken-ichiro; Kitagawa, Hiroshi; NAGAI, Masahiko; Yoshioka, Naoki

doi:10.1080/18811248.2010.9720983

Cited by 13 publications

(12 citation statements)

References 8 publications

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“…Thus, the formation of LSnanop from liquid Na and Ti nanoparticles is an exothermic reaction. At present, the authors believe that the negative heat of formation may be derived from the existence of the excess cohesive energy for the LSnanop, defined by Equations (9) and (10). The existence of excess cohesive energy may be also supported by the shrinkage of atomic volume (Section 5.1) and the increase of surface tension (Section 5.3).…”

Section: The Determination Of Excess Cohesive Energy Of Lsnanop From mentioning

confidence: 88%

“…Kim et al [15] performed theoretical analysis of the stability of this liquid Na containing Ti nanoparticles. In this article, the preparation, physicochemical properties, and stability of liquid Na containing Ti nanoparticles are reviewed, from the fundamental point of view, based on the studies of Ara and coworkers [9][10][11][12][13][14], particularly Saito et al [13]. Hereafter, liquid Na containing Ti nanoparticles is referred to as "LSnanop" (Liquid Sodium containing nanoparticles of titanium).…”

Section: Introductionmentioning

confidence: 99%

“…This chemical reactivity of liquid Na is desired to be removed by the introduction of nanoparticles into liquid Na. In fact, Ara and coworkers [9][10][11][12][13][14] succeeded in suppressing the chemical reactivity of liquid Na by introducing Ti nanoparticles. Kim et al [15] performed theoretical analysis of the stability of this liquid Na containing Ti nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…The difference of boundary condition is not so significant. Ara and coworkers [9][10][11][12][13][14] introduced Ti nanoparticles of 10 nm diameter into liquid Na (LSnanop). As can be seen in Figure 1, Ti nanoparticles of 10 nm diameter can be safely suspended in liquid Na, even if the inter-particle interaction is strong (f = 1/100), like in magnetic fluids.…”

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confidence: 99%

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The Promising Features of New Nano Liquid Metals—Liquid Sodium Containing Titanium Nanoparticles (LSnanop)

Itami

Saito

Ara

2015

Metals

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Abstract:A new kind of suspension liquid was developed by dispersing Ti nanoparticles (10 nm) in liquid Na, which was then determined by TEM (transmission electron microscopy) analysis. The volume fraction was estimated to be 0.0088 from the analyzed Ti concentration (2 at. %) and the densities of Ti and Na. This suspension liquid, Liquid Sodium containing nanoparticles of titanium (LSnanop), shows, despite only a small addition of Ti nanoparticles, many striking features, namely a negative deviation of 3.9% from the ideal solution for the atomic volume, an increase of 17% in surface tension, a decrease of 11% for the reaction heat to water, and the suppression of chemical reactivity to water and oxygen. The decrease in reaction heat to water seems to be derived from the existence of excess cohesive energy of LSnanop. The excess cohesive energy was discussed based on simple theoretical analyses, with particular emphasis on the screening effect. The suppression of reactivity is discussed with the relation to the decrease of heat of reaction to water or the excess cohesive energy, surface tension, the action as a plug of Ti oxide, negative adsorption on the surface of LSnanop, and percolation.

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Section: The Determination Of Excess Cohesive Energy Of Lsnanop From mentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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The Promising Features of New Nano Liquid Metals—Liquid Sodium Containing Titanium Nanoparticles (LSnanop)

Itami

Saito

Ara

2015

Metals

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