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• Improvement of Gasification Efficiency with Consideration for Microwave Input Power on Biogas Reformulation by Microwave Plasma Assisted Combustion

  Yamamoto T., Uchiyama S., Matsune H., Kishida M.

  IOP Conference Series: Materials Science and Engineering   778 ( 1 )   2020年04月  [査読有り]

  共著

  DOI

• Promoting effect of water vapor on particle matter combustion in a low-temperature continuous regeneration type PM removal device using a fluidized bed

  Yokoo K., Matsune H., Kishida M., Tatebayashi J., Yamamoto T.

  Powder Technology   355   657 - 666   2019年10月  [査読有り]

  共著

  　概要を見る

  © 2019 A fluidized bed type particulate matter (PM) removal device has been developed by focusing on the adhesion force under condition of non-water vapor. This device efficiently collects fine PM and can be operated as a low-temperature continuous regeneration device. The exhaust gas of a combustor includes water vapor at concentrations of 5–15 vol%. To further develop this device, the effect of water vapor on the continuous regeneration was investigated. The collection efficiency increases due to the water vapor. The reaction rate constant increases with increasing water vapor and with decreasing PM diameter. It is shown that water vapor promotes PM combustion at 250–400 °C. A smaller PM suits PM collection and combustion because smaller PM results in relatively larger adhesion force and well contacts the oxidant by dispersing it on the bed particles. The continuous regeneration temperature decreases to 380 °C due to the water vapor under optimal conditions.

  DOI

• Anomalous heat effects induced by metal nano-composites and hydrogen gas

  Iwamura Y., Itoh T., Kasagi J., Kitamura A., Takahashi A., Takahashi K., Seto R., Hatano T., Hioki T., Motohiro T., Nakamura M., Uchimura M., Takahashi H., Sumitomo S., Furuyama Y., Kishida M., Matsune H.

  Journal of Condensed Matter Nuclear Science   29   119 - 128   2019年08月  [査読有り]

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  　概要を見る

  © 2019 ISCMNS. All rights reserved. Collaborative research among Technova Inc., Nissan Motor Co. Ltd., Kobe Univ., Kyushu Univ., Nagoya Univ. and Tohoku Univ. was done from Oct. 2015 to Oct. 2017. For this collaborative work, a new accurate oil mass-flow calorimetry system was developed at Tohoku University to replicate anomalous heat generation experiments reported by Technova and the Kobe Univ. Group. In this paper, we present evidence of anomalous excess heat effects obtained from experiments at our laboratory at Tohoku University. Excess energy experiments were done using nano-sized metal composites with H2 or D2 gas. Anomalous excess heat generation were observed for all the samples at elevated temperature (150-350°C) except for the palladium nanoparticles embedded in mesoporous SiO2 (PSn1). The amount of anomalous heat generation per hydrogen atom ranged from 15 eV/H or D to 2.1 keV/H or D, which is too much to be explained by any known chemical process. Coincident burst events of pressure and gas temperature were observed for all the experiments using the CuNi7Zr15-Ox with H2 gas, which suggested sudden energy releases in the reaction chamber. These observations suggest large local energy bursts. Excess heat experiments using the same material at Kobe and Tohoku Universities showed similar experimental results. Qualitative reproducibility between the Kobe and Tohoku experiments was good.

• Glutathione-responsive nanoparticle consisting of an amino-functionalized silsesquioxane network cross-linked by zinc ions for a promising drug carrier

  Matsune H., Ono T., Yoshida R., Yamamoto T., Kishida M.

  Chemistry Letters   48 ( 9 ) 1058 - 1061   2019年  [査読有り]

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  　概要を見る

  © 2019 The Chemical Society of Japan A new class of nanoparticle (NP) is fabricated by cross-linking amino-functionalized silsesquioxane units with zinc ions via coordination bonds to create a drug delivery nanocarrier exhibiting rapid drug-release together with self-decomposition in response to glutathione (GSH). Regarding doxorubicin-loaded NPs, characterization of the nanostructures, their responsiveness to GSH and their cellular uptake by HeLa cells are examined.

  DOI

• Kinetic modeling of PM combustion with relative velocity at low-temperature and numerical simulation of continuous regenerating type PM removal device that uses a fluidized bed

  Yokoo K., Matsune H., Kishida M., Tatebayashi J., Yamamoto T.

  Advanced Powder Technology     2019年  [査読有り]

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  　概要を見る

  © 2019 The Society of Powder Technology Japan The size of particulate matter (PM) generated by combustion has decreased with the improvement of combustion technology. While small PM has a significant negative impact on the human body, it is difficult for a conventional PM removal device to collect small PM. We developed a fluidized bed type PM removal device with a focusing adhesion force. This device collects small PM effectively and can be operated as a continuous regeneration device at low temperature. To further develop this device, it is important to investigate the PM combustion characteristics in this device. The kinetic model constructed in conventional thermogravimetry could not accurately represent the combustion rates of the solid fuel in the fluidized bed. Therefore, a new thermogravimetric apparatus was constructed in this study that generates the direct collision of air with carbon to reproduce the fluidized bed combustion. The influence of the relative velocity between PM and gas on the combustion rate was investigated. The effect of relative velocity was represented as the mass transfer coefficient of kinetic model. It is observed that the combustion rate shows Arrhenius behavior, and kinetic parameters were determined by fitting. The kinetic model was applied to the numerical simulations of the PM removal device. The numerical collection efficiency was in good agreement with the experimental data. PM adhesion and combustion characteristics were investigated in numerical simulations. It is observed that the adhesion rate is high at a low void fraction and that the combustion rate is high at a high relative velocity. The PM combustion amount is high for the high adhesion and combustion rates. The total combustion amount is determined to be 55% of the total amount of PM deposition after 180 min at each set of conditions.

  DOI

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• Synthesis of carbon nanotube-supported Pt nanoparticles covered with silica layers

  Takenaka S., Arike T., Nakagawa K., Matsune H., Kishida M., Tanabe E.

  Carbon ( Carbon )  46 ( 2 ) 365 - 368   2008年02月

  総説・解説（大学・研究所紀要）   共著

  DOI

• Layered Nanocomposite of close-Packed Gold Nanoparticles and TiO₂ Gel Layers

  MATSUNE Hideki

  Chemistry of Materials   11 ( 1 ) 33 - 35   1999年

  総説・解説（大学・研究所紀要）   単著

  DOI CiNii

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• 糖ナノ粒子を犠牲母材に用いた酵素内包シリカナノカプセルの新規調製法と機能評価

  基盤研究(C)

  研究期間:  2019年04月  -  2021年03月  代表者:  松根英樹