A5091201367- Catalysis for Biomass Conversion
- Biofuel production and bioconversion
- Advanced Cellulose Research Studies
- Graphite, nuclear technology, radiation studies
- Chemical Synthesis and Characterization
- Thermochemical Biomass Conversion Processes
- Nanomaterials for catalytic reactions
- Nuclear and radioactivity studies
- Lignin and Wood Chemistry
- Mesoporous Materials and Catalysis
- Food composition and properties
- Radioactive element chemistry and processing
- Catalytic Processes in Materials Science
- Supercapacitor Materials and Fabrication
- Microbial Metabolic Engineering and Bioproduction
- Subcritical and Supercritical Water Processes
National Institute of Technology, Tsuyama College
2011-2023
Kanagawa Academy of Science and Technology
2008-2010
Tokyo Institute of Technology
2008-2009
Kobe University
2006-2008
National Institute of Advanced Industrial Science and Technology
2008
The hydrolysis of cellulose into saccharides using a range solid catalysts is investigated for potential application in the environmentally benign saccharification cellulose. Crystalline pure not hydrolyzed by conventional strong Brønsted acid such as niobic acid, H-mordenite, Nafion and Amberlyst-15, whereas amorphous carbon bearing SO3H, COOH, OH function an efficient catalyst reaction. apparent activation energy glucose estimated to be 110 kJ mol−1, smaller than that sulfuric under...
The reaction mechanism of the hydrolysis cellulose by a carbon-based solid acid, amorphous carbon containing graphene sheets bearing SO(3)H, COOH, and phenolic OH groups, has been investigated in detail through water-soluble beta-1,4-glucan. Whereas range strong Brønsted acid catalysts (inorganic oxides with acidic SO(3)H-bearing resins, acid) can hydrolyze beta-1,4-glycosidic bonds cellobiose (the shortest beta-1,4-glucan), tested acids except for material, consisting conventional acids,...
The hydrolysis of cellulose with a highly active solid acid catalyst, carbon material bearing SO3H, COOH, and OH groups, was investigated at 323−393 K using an artificial neural network (ANN) response surface methodology (RSM). ANN models developed for experimental design accurately reflect the novel solid−solid interface catalysis. RSM revealed that amount water dominates reaction as well saccharification by concentrated sulfuric acid, conventional method. correlations each parameter are...
Here we present the first report of a carbon-γ-Fe2O3 nanoparticle composite mesoporous carbon, bearing COOH- and phenolic OH- functional groups on its surface, remarkable magnetically separable adsorbent, for radioactive material emitted by Fukushima Daiichi nuclear power plant accident. Contaminated water soil at level 1,739 Bq kg−1 (134Cs 137Cs 509 1,230 kg−1, respectively) 114,000 38,700 75,300 were decontaminated 99% 90% respectively with just one treatment carried out in Nihonmatsu city...
Carbon-based solid acid catalysts have shown significant potential in a wide range of applications, and they been successfully synthesized using simple processes. Magnetically separable mesoporous carbon composites also enormous potential, especially separation adsorption technology. However, existing techniques unable to produce magnetically catalyst because no suitable precursors identified. Herein we describe separable, from newly developed carbon-γ-Fe2O3 nanoparticle composite. This...
The powder properties of a carbon-based solid acid catalyst, an amorphous carbon material bearing SO3H, COOH and OH groups, were investigated for the hydrolysis cellulose. Carr flowability floodability indices, angle internal friction (adherence), particle size distribution shape catalyst determined. need to develop special reactor with stirring apparatus cellulose was determined based on index. Insight into interaction or adherence between crystalline during process gained by measuring...
A highly efficient reactor with a stirring device was specially designed the intent of performing hydrolysis pure crystalline cellulose using carbon-based solid acid catalyst. This catalyst comprised an amorphous material bearing -SO3H, -COOH and -OH groups. The apparatus had seven blades coated polytetrafluoroethylene arranged axially at regular intervals 60° offset. design proved effective, providing double glucose yield compared conventional systems. basic properties this novel were...
Carbon-based solid acid catalysts have shown great potential in a wide range of applications. Magnetic mesoporous carbon composite materials also enormous especially separation and adsorption technology. However, existing methods synthesis magnetic composites are complex multi-step procedures that hard to control. A carbon-based catalyst has been successfully synthesised from amorphous carbon. techniques unable produce magnetically separable simply. Here we show carbon-iron oxide...