O. N. Kovalenko, I. I. Simentsova, V. N. Panchenko, M. N. Timofeeva
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引用次数: 0
Abstract
The effect of acid activation with 0.125–0.5 M Н2SO4, HCl, and HNO3 on the physicochemical properties and catalytic performance of natural clay (the Mukhartalinskii deposit) containing 95% montmorillonite (MM) was investigated in the synthesis of solketal [(2,2-dimethyl 1,3-dioxolan-4-yl)methanol] from glycerol and acetone. The reaction rate and selectivity toward solketal are shown to depend on the type and concentration of acid. Both the yield of solketal and the reaction rate rose with increasing acid concentration, which correlates with the increase in the number of Brønsted acid sites. The efficiency of the system was found to diminish in the order MM/HCl > MM/HNO3 > MM/H2SO4 as the surface acidity decreased.
期刊介绍：
The journal covers the following topical areas:
Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.
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