Michael Ioelovich
Michael Ioelovich was graduated Ph.D. in 1974, Latvian Institute of Wood Chemistry; D.Sc. in 1991, Habil. D.Sc. in 1992, Latvian Academy of Sciences, and was elected as Leading Scientist and Professor. His scientific activation and interests are connected with chemistry and technology of plant biomasses, cellulose, pulp and paper, cellulose derivatives, natural and synthetic polymer composites. Prof. M. Ioelovich worked at Institute of Fibers, Weizmann Institute of Science, as well as at various Nano-Tech, Bio-Tech and Chemical companies of Israel. From 2005 to 2013 Prof. M. Ioelovich worked as chief chemist in Chem. Dep. of Designer Energy Co. From 2014 he worked as consult and manager of projects in field of nanotechnology, biomass structure, modification and use, and technologies of biofuels.
Prof. M. Ioelovich published 13 monographs and book chapters, and more than 400 scientific publications in field of structure, chemistry, physics, technology and nanotechnology of biomass, cellulose and synthetic polymers, as well as biochemicals and bioenergy. He is also authors of 14 patents. Prof. M. Ioelovich is member of editorial board of Energy and Ecology, Int. Res, J., Research in Industrial and Engineering Chemistry, South Asian Res. J. of Natural Products, J. of Polymer Chemistry, Academy Journal of Polymer Science, J. SITA, as well as reviewer of various scientific journals such as Bioresources, Bioscience, Energy and Ecology, Green Energy, Material Letter, Carbohydrate Polymers, Cellulose, etc.
Supervisors: Advisor of projects in field of nanotechnology, biomass structure, modification and use, and technologies of biofuels.
Prof. M. Ioelovich published 13 monographs and book chapters, and more than 400 scientific publications in field of structure, chemistry, physics, technology and nanotechnology of biomass, cellulose and synthetic polymers, as well as biochemicals and bioenergy. He is also authors of 14 patents. Prof. M. Ioelovich is member of editorial board of Energy and Ecology, Int. Res, J., Research in Industrial and Engineering Chemistry, South Asian Res. J. of Natural Products, J. of Polymer Chemistry, Academy Journal of Polymer Science, J. SITA, as well as reviewer of various scientific journals such as Bioresources, Bioscience, Energy and Ecology, Green Energy, Material Letter, Carbohydrate Polymers, Cellulose, etc.
Supervisors: Advisor of projects in field of nanotechnology, biomass structure, modification and use, and technologies of biofuels.
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wide range of temperatures and pressures to predict the most probable direction of the synthesis reactions. It was shown that in the case of methanol synthesis at normal pressure, an increase in the reaction temperature above 400 K
leads to the positive value of the Gibbs potential, as a result of which this reaction is blocked. An increase in pressure to at least 3 MPa is necessary to implement the methanol synthesis reaction. Under this pressure, the methanol synthesis
can be carried out in the temperature range from 480 to 530 K. In addition, to enhance the alcohol yield, this process requires the use of a special catalyst. Artificial n-octane is mainly formed at 3 MPa in the temperature range from 530 to 600 K along with the use of a catalyst to improve the reaction selectivity. Selective methane synthesis may occur at a syngas pressure of 3 MPa but at high reaction temperatures, between 900 and 1200 K. To reduce the upper temperature of this process and increase the yield of the final product without significantly changing the reaction rate, a special
catalyst is used. The reactions of syngas cease at normal pressure when the temperature increases above 900 K. At a syngas pressure of 3 MPa the synthesis reactions should cease if the temperature rises above 1200K,
the biomass components such as cellulose, hemicelluloses, lignin, and some other substances, as well as, in biomass-based secondary
biofuels, solid (bio-char), liquid (bio-alcohols, bio-gasoline, biodiesel fuels), and gaseous (bio-hydrogen, bio-methane, syngas). For
this purpose, methods of chemical thermodynamics were used. It was found that the increased content of lignin, lipids, resins, and
waxes in the biomass contributes to its high Q value, while moisture and ash reduce the Q value of the biomass. A method of additive
contributions of thermal energies of main biomass components is proposed to calculate the Q value of the biomass sample.
Considerable attention is also paid to studying thermal energy content in cellulose derivatives, and secondary solid, liquid, and
gaseous biofuels. The Q and ED values of biochar obtained from biomass are significantly higher than those of the initial biomass. Of
the various liquid fuels, bio-gasoline synthesized from synthesis gas by the Fischer-Tropsch method has the largest amount values of
Q and ED. Among the various biogases, bio-hydrogen has no competitors because of its enormous thermal energy content. However,
if the value of energy density is calculated, then bio-methane comes out on top
After the cellulose study, the direct and exact thermochemical method for determining the crystallinity degree of this biopolymer was proposed. In addition, the standard combustion and formation enthalpies of various cellulose samples were studied. As a result, the thermodynamic characteristics of four crystalline allomorphs of cellulose, CI, CII, CIII, and CIV, were obtained and their thermodynamic stability was evaluated. The thermochemistry of enzymatic hydrolysis of cellulose was studied. In addition. The thermodynamical characteristics of various cellulose derivatives were determined, and the thermochemistry of the reactions of cellulose alkalization, etherification, esterification, and oxidation was studied.
chemical bond between atoms. The first is the force of electrostatic repulsion of electrons. The second is the
gravitational attraction of these electrons. The third is the force of electromagnetic attraction between the electron pair.
From calculations it follows, that the force of gravitational attraction is negligible, and therefore it is not able to
withstand the force of electrostatic repulsion between electrons. However, the force of electromagnetic attraction
between a pair of electrons with antiparallel spins turned out to be much greater than the force of their electrostatic
repulsion. As a result, the formation of stable electron pairs in molecular orbitals becomes possible. Thus, the valence
electrons of neighboring atoms interact with each other like femto-electromagnets, which leads to the formation of a
strong interelectronic bond and ensures the integrity of the molecule. To form covalent bonds, the force of electrostatic
attraction between the nuclei and paired electrons of the molecular orbitals must exceed the forces of electrostatic
repulsion between both the positively charged nuclei and the negatively charged electrons of the atomic orbitals of
different atoms