Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Norihito Kijima"'
Publikováno v:
Heliyon, Vol 5, Iss 11, Pp e02843- (2019)
The low thermoplasticities of polysaccharide esters make them unsuitable for melt spinning. In this study, we aimed to overcome this problem by mixed esterification of paramylon, a euglenoid β-1,3-glucan with short- and medium-chain acyl groups, as
Externí odkaz:
https://doaj.org/article/6860a71d743847a8ac2634b6fce4630e
Autor:
Norihito Kijima, Yuki Hamada, Kunimitsu Kataoka, Junji Akimoto, Kazuki Chiba, Naoki Hamao, Mikito Mamiya, Naoya Ishida, Hiroshi Hayakawa, Yasushi Idemoto
Publikováno v:
Solid State Ionics. 333:9-15
We synthesized micrometer-sized LiCoMnO4 with spinel structure by heating ion-exchanged LixCo0.5Mn0.5O2 with O6-type layered rocksalt structure at 600 °C. In this synthetic route, we first synthesized micrometer-sized NaxCo0.5Mn0.5O2 with P2-type la
Publikováno v:
Journal of The Electrochemical Society. 166:A5301-A5307
Publikováno v:
Solid State Ionics. 369:115727
Niobium-substituted hollandite-type titanium dioxides with different potassium content in the tunnel space, KxTi1–yNbyO2, were synthesized by potassium extraction method using H2SO4/H2O2 solution. Rietveld refinement from X-ray powder diffraction d
Publikováno v:
Solid State Ionics. 357:115467
Lithium manganese titanium oxide Li2.7MnTi3O9 with the Na2.08Ti4O9-type tunnel structure was prepared at 270 °C via ion-exchange reaction using the starting compound Na2.7MnTi3O9 in molten salts of LiNO3 and LiNO3-LiOH·H2O for the first time. The s
Publikováno v:
Journal of the Ceramic Society of Japan. 124:678-683
Publikováno v:
Chemistry Letters. 46:886-888
Fe2O3/SnO2 nanocomposites were successfully synthesized by microwave heating and spray drying process. Spherical secondary particles (less than 5 µm) of the Fe2O3/SnO2 nanocomposites consisted of primary particles (about 5 nm), and the atomic ratio
Autor:
Junji Akimoto, Yutaka Tanuma, Mitsumasa Sakao, Kaoru Igarashi, Kunimitsu Kataoka, Norihito Kijima
Publikováno v:
Solid State Ionics. 262:14-17
Single phase specimens of hollandite-type MnO2, TiO2, and KxTi1 − yMnyO2, were synthesized, and their electrochemical properties and crystal structures were investigated. The chemically prelithiated MnO2 and sufficiently K+-extracted TiO2 specimens
Autor:
Hiroshi Hayakawa, Naoya Ishida, Fuji Funabiki, Junji Akimoto, Junichi Imaizumi, Hideka Shibuya, Norihito Kijima
Publikováno v:
Journal of Power Sources. 244:382-388
We have successfully prepared Li 0.44+ x Mn 1− y Ti y O 2 having the Na 0.44 MnO 2 -type framework structure by ion-exchange technique in molten LiNO 3 and LiNO 3 –LiOH salts at 270 °C from the precursor Na 0.44 Mn 1− y Ti y O 2 synthesized at
Publikováno v:
Key Engineering Materials. 566:111-114
A porous titania was synthesized by spray-drying of titania nanosheets exfoliated by (C4H9)4NOH. Nitrogen adsorption-desorption isotherms showed that the porous titania has a mesoporous structure composed of slit-shaped pores. The porous titania acte