87 research outputs found
Nano-Tubular Cellulose for Bioprocess Technology Development
Delignified cellulosic material has shown a significant promotional effect on the alcoholic fermentation as yeast immobilization support. However, its potential for further biotechnological development is unexploited. This study reports the characterization of this tubular/porous cellulosic material, which was done by SEM, porosimetry and X-ray powder diffractometry. The results showed that the structure of nano-tubular cellulose (NC) justifies its suitability for use in “cold pasteurization” processes and its promoting activity in bioprocessing (fermentation). The last was explained by a glucose pump theory. Also, it was demonstrated that crystallization of viscous invert sugar solutions during freeze drying could not be otherwise achieved unless NC was present. This effect as well as the feasibility of extremely low temperature fermentation are due to reduction of the activation energy, and have facilitated the development of technologies such as wine fermentations at home scale (in a domestic refrigerator). Moreover, NC may lead to new perspectives in research such as the development of new composites, templates for cylindrical nano-particles, etc
The Evolution Of Co Species On The Surface of Îł-Al2O3 and SiO2 Modified with the Pre-Transition Cations
The nature of the molybdenum active phase supported on Îł-Al2O3 modified by alkali earth cations
Catalytic deactivation of Co-Mo hydrodesulphurization catalysts supported on Îł-Al2O3 doped with Li+ ions
Molybdena catalysts prepared on modified carriers: Regulation of the symmetry and valence of the molybdenum species formed on Îł-Al2O3 modified with alkali cations
ChemInform Abstract: STUDIES ON MODIFIED CARRIERS: CHARACTERIZATION OF COBALT ACTIVE SPECIES SUPPORTED ON SILICA DOPED WITH ALKALI EARTH CATIONS
ChemInform Abstract: CATALYTIC DEHYDROHALOGENATION ON ALUMINA MODIFIED WITH ALKALI-METAL CHLORIDES
ChemInform Abstract: FORMATION OF COBALT SPECIES ON THE AL2O3 SURFACE DOPED WITH CA(2+) AND FE(3+), STUDIED BY DIFFUSE-REFLECTANCE SPECTROSCOPY
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