Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Toshiaki Sodesawa"'
Autor:
Yasuhiro Yamada, Masashi Nakamura, Toshiaki Sodesawa, Hajime Yasuda, Satoshi Sato, Kazumasa Murota
Publikováno v:
Journal of Materials Science. 48:8171-8198
X-ray photoelectron spectroscopy (XPS) is among the most powerful methods to determine the surface chemical properties of carbon materials. Because heat-treated graphite oxide includes various defects, analyses of the structure by XPS help us underst
Autor:
Takashi Kojima, Shin Nishiyama, Masaki Segawa, Satoshi Sato, Toshiaki Sodesawa, Nobuo Ishizawa, Mika Kobune
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 310:166-173
Vapor-phase catalytic reactions of several alcohols were investigated over In 2 O 3 . In 2 O 3 showed stable catalytic activity in the dehydration of terminal diols, such as 1,4-butanediols and 1,5-pentanediol, to produce unsaturated alcohols, such a
Publikováno v:
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 41:997-1002
In order to understand the average concentrations of ambient volatile organic compounds (VOCs) in the urban atmosphere of Beijing, a diffusive sampling device (DSD-voc) was used to adsorb VOCs. The adsorbates were analyzed by gas chromatography/mass
Publikováno v:
Catalysis Communications. 8:1349-1353
Dehydration of glycerol to produce acrolein was performed over several solid acids. Supported heteropoly acids were effective as a catalyst for the dehydration of glycerol. The catalytic activity depended on the types of heteropoly acid and on the si
Publikováno v:
Applied Catalysis A: General. 328:109-116
Vapor-phase reaction of 1,3-butanediol was investigated over rare earth oxide (REO) catalysts. In the reaction of 1,3-butanediol, dehydration and decomposition of 1,3-butanediol occurred simultaneously at 325 °C. The formation of unsaturated alcohol
Publikováno v:
Journal of Sol-Gel Science and Technology. 43:275-282
The bending strength and the Young’s modulus of bimodal porous silica gels having different porosity were evaluated. The porosity of the gel increased by aging the gel under basic conditions, and decreased with increasing the calcination temperatur
Publikováno v:
Catalysis Communications. 8:807-810
Vapor-phase catalytic dehydration of 1,4-butanediol was investigated over lanthanide oxides at 375 °C. Tetrahydrofuran (THF) and 3-buten-1-ol were competitively produced from 1,4-butanediol: oxides of light rare earth dominantly catalyze cyclization
Autor:
Naoki Mikami, Satoshi Sato, Takaya Goto, Ryoji Takahashi, Toshiaki Sodesawa, Katsuhiro Matsutani
Publikováno v:
Materials Research Bulletin. 42:523-531
The bending strength of amorphous silica gels with bimodal pore structure was evaluated by changing macropore morphology and porosity, where the macropore morphology was controlled by inducing phase separation during gelation of silicate solution and
Publikováno v:
Journal of the Ceramic Society of Japan. 115:882-887
Bimodal porous silica gel with both macropores and mesopores was prepared from water glass (WG) in the presence of low-molecular-weight surfactant, sodium dodecyl sulfate (SDS), by inducing phase separation during sol-gel reaction. The macroporous mo
Publikováno v:
Applied Catalysis A: General. 312:175-180
Cycloketonization of dimethyl hexanedioate into cyclopentanone was investigated over pure CeO2 at a temperature between 350 and 475 °C. The conversion of the diester increased with raising the reaction temperature. The selectivity to cyclopentanone,