Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Tsutomu Sugeta"'
Autor:
Yoshihiro Takebayashi, Attila, Satoshi Yoda, Attila, Tsutomu Sugeta, Attila, Katsuto Otake, Attila, Takeshi Sako, Attila, Masaru Nakahara, Attila
Publikováno v:
Journal of Chemical Physics; 4/1/2004, Vol. 120 Issue 13, p6100-6110, 11p, 2 Diagrams, 13 Graphs
Autor:
Idzumi Okajima, Takeshi Sako, Yoshihiko Iwamoto, Tsutomu Sugeta, Masamichi Ishibashi, Ashihara Shingo, Takanori Yamazaki, Goto Toshiharu
Publikováno v:
Industrial & Engineering Chemistry Research. 50:5661-5666
In this study, we developed a continuous process using extruders in a pilot plant for recycling silane cross-linked polyethylene (silane-XLPE) via chemical reaction in supercritical alcohol. As a first step, an autoclave was employed to reveal the ef
Publikováno v:
Journal of Applied Polymer Science. 109:144-151
Material recycling of silane-crosslinked polyethylene (silane-XLPE) was investigated to make thermoplastic polyethylene (PE). To make thermoplastic PE from silane-XLPE, a crosslinking element that consists of a siloxane bond must selectively be decom
Publikováno v:
Journal of Non-Crystalline Solids. 350:320-325
The preparation of a platinum (Pt)-silica aerogel nanocomposite has been investigated using supercritical impregnation of platinum (II) acetylacetonate (Pt(II)(acac) 2 ) into silica substrate. The Pt(II)(acac) 2 was dissolved in supercritical carbon
Publikováno v:
The Journal of Physical Chemistry B. 107:9847-9852
The 13C chemical shifts δ of carbonyl (13CO) and nitrile (13C⋮N) compounds in aqueous solutions were measured as functions of temperature to study the hydration structure around dipolar solutes. The δ values showed an anomalous maximum in the tem
Autor:
Takeshi Sako, Akira Negishi, Daisuke Shintani, Katsuto Otake, Dmitry S. Bulgarevich, Chiyoshi Kamizawa, Chikao Tsurumi, Tsutomu Sugeta, Yoshihiro Takebayashi
Publikováno v:
The Journal of Supercritical Fluids. 26:215-224
In situ ultraviolet absorption spectroscopy was applied to study the kinetics of N-alkylation of N-methyl-o-toluidine (NMOT) by supercritical (SC) methanol without any added catalysts. The pseudo-first-order rate constants of this reaction, estimated
Autor:
Takeshi Sako, Katsuto Otake, Masahiro Kato, Yoshihiro Takebayashi, Dmitry S. Bulgarevich, Yoshiteru Horikawa, Chiyoshi Kamizawa, Tsutomu Sugeta
Publikováno v:
Industrial & Engineering Chemistry Research. 41:2074-2081
UV/visible absorption spectroscopy was applied to measure the microscopic solvent dipolarity/polarizability, π*, and hydrogen-bond-acceptor basicity, β, parameters of supercritical CO2/n-alcohol mixtures. Experiments were conducted at 45 °C by var
Autor:
Yoshihiro Takebayashi, Takeshi Sako, Chiyoshi Kamizawa, Daisuke Shintani, Tsutomu Sugeta, Akira Negishi, Dmitry S. Bulgarevich, Katsuto Otake, Chikao Tsurumi
Publikováno v:
The Journal of Chemical Physics. 116:1995-2003
We report the first Fourier transform infrared spectroscopic studies of the hydrogen-bonding interactions in supercritical methanol and methanol/methanol-d1 mixtures. At 523 K and below ∼0.3 mol/l, methanol chiefly existed in a monomeric form. Howe
Publikováno v:
KAGAKU KOGAKU RONBUNSHU. 28:553-558
亜臨界から超臨界領域の水を用いてエポキシ樹脂の分解を行った.その結果,350–380℃,25MPaの条件で樹脂は完全に分解し,約90%がフェノールやイソプロピルフェノールなどの単環フェ
Publikováno v:
Journal of Non-Crystalline Solids. 285:8-12
The preparation of silica–titania aerogel by supercritical impregnation of titanium isopropoxide (TP) or modified with acetylacetone (TPAA) using flow type apparatus was performed. The influence of the physical state of TP/CO 2 TPAA/CO 2 mixture wa