Zobrazeno 1 - 10
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pro vyhledávání: '"Toshihiko Osaki"'
Autor:
Toshihiko Osaki
Publikováno v:
Journal of Sol-Gel Science and Technology. 97:291-301
Nickel–alumina cryogel was prepared from aluminium sec-butoxide and nickel acetate by one-pot sol–gel processing and subsequent freeze drying. Catalysis for CO2 reforming of CH4 and carbon formation during the reforming were examined on the cryog
Autor:
Toshihiko Osaki
Publikováno v:
Research on Chemical Intermediates. 46:3125-3143
Homogeneous 1 wt% Pt/CeO2–ZrO2–Al2O3 cryogels with Ce/Zr = 1 and Ce/Al = 0–1/2 were synthesized by one-pot sol–gel processing and subsequent freeze drying. Catalysis for CO and CH4 oxidation was investigated after heating in air at 800 °C fo
Autor:
Toshihiko Osaki
Publikováno v:
Journal of Materials Science. 53:3250-3266
In order to synthesize cobalt-based spinel oxides, air was bubbled through aqueous hydroxides suspensions of cobalt and zinc with atomic ratios of Co:Zn = 100:0, 85:15, 67:33 (precisely 2:1), 50:50, 30:70, 15:85, and 0:100 at 70 °C and atmospheric p
Autor:
Toshihiko Osaki
Publikováno v:
Journal of Porous Materials. 25:697-711
Porous and homogeneous palladium-alumina cryogels were synthesized from aluminium sec-butoxide (ASB) and palladium nitrate through one-pot sol–gel processing in an aqueous system and subsequent freeze drying. In order to optimize the sol–gel cond
Autor:
Toshihiko Osaki
Publikováno v:
Journal of Sol-Gel Science and Technology. 82:133-147
Porous and homogeneous cryogels of binary ceria-alumina (CA) and ternary ceria-zirconia-alumina (CZA) were prepared from cerium nitrate, zirconium (IV) dinitrate oxide hydrate, and aluminium sec-butoxide by a one-pot sol–gel technique in an aqueous
Autor:
Toshihiko Osaki
Publikováno v:
Catalysis Letters. 145:1931-1940
The effect of Ni diameter on the rates of individual steps involved in CH4–CO2 reforming was examined on Ni/Al2O3 catalysts in the diameter range of ca. 4–22 nm. It was revealed that CO2 dissociation to give CO and Oads was improved by decreasing
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 114:561-570
Cerium-dispersed alumina cryogel was prepared from cerium nitrate and aluminum sec-butoxide by a combination of one-pot sol–gel with freeze drying. The cryogel catalyst exhibited higher thermal stability of ceria and larger oxygen storage capacity
Autor:
Toshihiko Osaki
Publikováno v:
Materials Research Bulletin. 118:110498
Porous and homogeneous 5 wt.% Pd/CeO2-ZrO2-Al2O3 cryogels (Ce/Zr = 1 and Ce/Al = 0–1/2) were synthesized by one-pot sol-gel processing and subsequent freeze drying, and catalysis of CO oxidation was investigated after heating at high temperatures.
Publikováno v:
Catalysis Letters. 142:541-546
In order to improve thermal stability and catalytic oxidation activity of platinum–alumina cryogels prepared by one-pot sol–gel reactions and subsequent freeze drying, molar ratio of aluminum sec-butoxide, nitric acid, and water used for the sol
Autor:
Koji Tajiri, Koji Watari, Kiho Yamada, Takeshi Miki, Toshihiko Osaki, Saori Shima, Yutaka Tai
Publikováno v:
Journal of Sol-Gel Science and Technology. 61:268-274
Alumina cryogels were synthesized from a colloidal boehmite sol through a sol–gel processing and subsequent freeze drying, and thermal stability was examined by comparison to that of the corresponding xerogel, precipitate and commercial alumina. N2