Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Yoshito Oshima"'
Publikováno v:
Journal of Chemical Engineering of Japan, Vol 57, Iss 1 (2024)
In this study, Na-ZrO2 was prepared from two types of ZrO2 as solid base catalyst and the catalytic activity, selectivity, and mechanism of Na-ZrO2 for base catalyzed reactions in subcritical water were elucidated using aldol condensation between ace
Externí odkaz:
https://doaj.org/article/3a3f6bd4b8a54a0b9b649db1c6faf877
Publikováno v:
Industrial & Engineering Chemistry Research; 7/31/2024, Vol. 63 Issue 30, p13127-13133, 7p
Publikováno v:
The Journal of Supercritical Fluids. 194:105857
Publikováno v:
Industrial & Engineering Chemistry Research. 59:3035-3043
In the synthesis of metal oxide nanoparticles (NPs), methods to control their size and distribution have been desired. Precise and rapid control without the use of organic surfactants is a serious ...
Publikováno v:
Industrial & Engineering Chemistry Research. 58:13076-13084
The effects of the alcohol concentration of a hot compressed water–alcohol (methanol or ethanol) mixture on acid-catalyzed ester reactions were investigated. In the water and water–methanol mixture...
Autor:
Yoshito Oshima, Makoto Akizuki
Publikováno v:
The Journal of Supercritical Fluids. 141:173-181
The acid catalytic properties of TiO2, Nb2O5, and NbOX/TiO2 in supercritical water at 400 °C and 25–65 MPa were investigated. Two model reactions were used to elucidate the effects of water properties on catalysis and their variation with the cata
Publikováno v:
The Journal of Physical Chemistry C. 122:24350-24358
Controlling particle size and structure is challenging in the synthesis of composite metal oxide nanoparticles. In this study, first-principles calculations based on density functional theory were ...
Autor:
Morteza Hosseinpour, Masato Morimoto, Makoto Akizuki, Seyed Javad Ahmadi, Shohreh Fatemi, Yoshito Oshima
Publikováno v:
Fuel. 225:161-173
Due to the increasing attention of the experts working in refineries on innovative techniques for heavy oil upgrading, the current research is focused on in-situ upgrading of heavy oil in supercritical water (SCW) assisted by formic acid. In dry cond
Autor:
Shohreh Fatemi, Seyed Javad Ahmadi, Makoto Akizuki, Yoshito Oshima, Morteza Hosseinpour, Eri Fumoto, Masato Morimoto
Publikováno v:
Applied Catalysis B: Environmental. 230:91-101
Catalytic treatment in water medium under high-pressure condition could be an attractive technology for clean upgrading of heavy crude oils and residua with effective heteroatom removal to meet the qualified liquid transportation fuels. By applying i
Autor:
Yoshito Oshima, Makoto Akizuki
Publikováno v:
Industrial & Engineering Chemistry Research. 57:5495-5506
Solid acid/base catalysis in sub- and supercritical water (Sub&SCW) is a promising method to control organic reactions such as biomass conversions to chemicals and fuels, organic synthetic reactions, and degradation reactions. Synergistically using t