S
Shiro Saka
Researcher at Kyoto University
Publications - 299
Citations - 15285
Shiro Saka is an academic researcher from Kyoto University. The author has contributed to research in topics: Supercritical fluid & Cellulose. The author has an hindex of 59, co-authored 290 publications receiving 14000 citations. Previous affiliations of Shiro Saka include Shin-Etsu Chemical & North Carolina State University.
Papers
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Journal ArticleDOI
Biodiesel fuel from rapeseed oil as prepared in supercritical methanol
Shiro Saka,Dadan Kusdiana +1 more
TL;DR: In this paper, the transesterification reaction of rapeseed oil in supercritical methanol was investigated without using any catalyst, and it was shown that in a preheating temperature of 350°C, 240 s of supercritical treatment of methenol was sufficient to convert the rapeseed oils to methyl esters.
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Kinetics of transesterification in rapeseed oil to biodiesel fuel as treated in supercritical methanol
Dadan Kusdiana,Shiro Saka +1 more
TL;DR: In this paper, a kinetic study in free catalyst transesterification of rapeseed oil was made in subcritical and supercritical methanol under different reaction conditions of temperatures and reaction times.
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Effects of water on biodiesel fuel production by supercritical methanol treatment.
Dadan Kusdiana,Shiro Saka +1 more
TL;DR: Investigating the effect of water on the yield of methyl esters in transesterification of triglycerides and methyl esterification of fatty acids as treated by catalyst-free supercritical methanol demonstrated that crude vegetable oil as well as its wastes could be readily used for biodiesel fuel production in a simple preparation.
Journal ArticleDOI
Bioconversion of hybrid poplar to ethanol and co-products using an organosolv fractionation process: Optimization of process yields
Xuejun Pan,Neil R. Gilkes,John F. Kadla,Kendall Pye,Shiro Saka,David J. Gregg,Katsunobu Ehara,Dan Xie,Dexter Lam,John N. Saddler +9 more
TL;DR: The influence of four independent process variables (temperature, time, catalyst dose, and ethanol concentration) on product yields was analyzed over a broad range using a small composite design and response surface methodology and generated regression models that describe process responses for any combination of the four variables.
Journal ArticleDOI
Reactivity of triglycerides and fatty acids of rapeseed oil in supercritical alcohols.
TL;DR: The results showed that transesterification of triglycerides (rapeseed oil) was slower in reaction rates than alkyl esterification of fatty acids for any of the alcohols employed.