Boris N. Kuznetsov
Siberian Federal University
Nuclear chemistrySulfationCatalysisOrganic chemistryInorganic chemistryChemistryMaterials scienceRaw materialCelluloseMicrocrystalline celluloseBiomassPeroxideLigninPyrolysisChemical engineeringCarbonCoalPulp and paper industryYield (chemistry)PorosityHydrolysis
349Publications
22H-index
1,924Citations
Publications 352
Newest
#1Boris N. KuznetsovH-Index: 22
#2S. V. BaryshnikovH-Index: 8
Last. Oxana P. TaranH-Index: 17
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For the first time, the fractionation of birch wood into microcrystalline cellulose, xylose and methoxyphenols is suggested based on the integration of alkali-acid pretreatments and hydrogenation in ethanol over a bifunctional Ru/C catalyst. It is established that removal of hemicelluloses during pretreatments of birch wood influences the yields of the liquid, gaseous and solid products of the non-catalytic and catalytic hydrogenation of pretreated samples in ethanol at 225 °C. The bifunctional ...
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#1Boris N. Kuznetsov (SibFU: Siberian Federal University)H-Index: 22
#2Victor I. SharypovH-Index: 12
Last. Laurent DjakovitchH-Index: 13
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Abstract Catalytic hydrogenolysis in the medium of supercritical organic solvents is a promising way of wood lignins depolymerization into liquid products. In this study, for the first time, the catalytic properties of bifunctional catalysts Ru/C, Pt/ZrO2, NiCuMo/SiO2, containing nanosized metal particles on acidic groups are compared in the processes of aspen wood and ethanol lignin hydrogenolysis in supercritical ethanol. The most active catalysts are Ru/C and Pt/ZrO2 which provide the high co...
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Sulfation of larch wood arabinogalactan (AG) with sulfamic acid in dimethylsulfoxide (DMSO) medium in the presence of urea was studied for the first time. The use of DMSO as a solvent instead of more toxic 1,4-dioxane allows to sulfate AG under homogeneous conditions. The sulfated AG with a high sulfur content (12.0-12.5 wt %) was produced by sulfation at a temperature of 85-90 °C, the molar ratio of AG / sulfating agent equal to 1:0.85 during 2-3 h. The introduction of sulfate groups into the s...
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#1Nadezhda M. MikovaH-Index: 4
#2V. А. LevdanskiyH-Index: 1
Last. Boris N. Kuznetsov (SibFU: Siberian Federal University)H-Index: 22
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The organic xerogels, prepared from tannins and ethanol lignins of the fir (Abies sibirica), were synthesized for the first time. The influence of the composition of initial mixture and pH on the characteristics of xerogels obtained by sol-gel condensation of formaldehyde with polyphenols of fir has been studied. The possibility of regulating the density and porosity of gels by varying of the concentration of ethanol lignin in the initial mixture was established. It was found that tannin-lignin-...
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#1Boris N. Kuznetsov (SibFU: Siberian Federal University)H-Index: 22
#2Irina G. SudakovaH-Index: 7
Last. Franck RataboulH-Index: 18
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Abstract Two alternative routes of softwood catalytic oxidative fractionation to cellulose products and fine chemicals are assessed. Wesuggested to use the process of larch wood peroxide oxidation in the medium acetic acid – water at temperatures 70–100 °C in the presence of soluble catalyst (NH4)6Mo7O24 to produce microcrystalline cellulose (35.0 wt% on wood), microfibrillated cellulose (7.5 wt% on wood) or nanocrystalline cellulose (3.7 wt% on wood) and low molecular weight organic compounds (...
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#1Oxana P. TaranH-Index: 17
#2V. V. SychevH-Index: 1
Last. Boris N. KuznetsovH-Index: 22
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#1Nadezhda M. MikovaH-Index: 4
#2Elena V. MazurovaH-Index: 4
Last. Boris N. KuznetsovH-Index: 22
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For the first time, tannin-lignin-formaldehyde and tannin-lignin-furfuryl organic gels were obtained on the basis of larch bark tannins and hydrolysis lignin by sol-gel condensation with formaldehyde and furfuryl alcohol. Their physico-chemical properties were studied by varying the content of lignin (from 5 to 30 wt%) and a fixed mass ratio of polyphenolic substances to the crosslinking reagent (1 : 1.5). With an increase in the lignin content the density of tannin-lignin formaldehyde gels decr...
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#1Oxana P. Taran (SibFU: Siberian Federal University)H-Index: 17
#2V. V. SychevH-Index: 1
Last. Boris N. Kuznetsov (SibFU: Siberian Federal University)H-Index: 22
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γ-Valerolactone (GVL), which is a valuable chemical compound and a platform molecule, is considered as an intermediate product for the synthesis of chemical compounds with high added value, components of motor fuels and biopolymers. GVL is successfully used as an environmentally friendly solvent, fuel additive, fragrance and food additive. This review summarizes recent advances in the development of catalytic methods for the production of GVL from levulinic acid (LA), alkyl levulinates (AL), car...
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