High-Performance Catalytic PdZn and PdAg Films for the Semihydrogenation of 2-Methyl-3-Butyn-2-Ol in a Continuous-Flow Microreactor

IF 0.9 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2026-08-17 DOI:10.1134/S2070050426700194

L. B. Okhlopkova, I. P. Prosvirin, S. R. Khairulin

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Abstract

The synthesis of an active, selective, and stable catalytic coating is a difficult task for the semihydrogenation of alkenols in a continuous-flow microreactor, being a potentially efficient strategy for the production of alkenols in fine organic synthesis. In this study, catalytic PdMe/TiO₂ films (Me = Zn, Ag) were synthesized by the simple and efficient template sol-gel method and used in 2-methyl-3-butyn-2-ol semihydrogenation. The prepared bimetallic catalytic PdMe/TiO₂ films (Me = Zn, Ag) demonstrated high catalytic selectivity due to the formation of PdZn and PdAg alloy nanoparticles (NPs). The surface of an active PdAg site is transformed under reaction conditions. The PdZn film demonstrated a better catalytic activity. Doping the support with zinc increases the selectivity and stability of the films. The analysis of X-ray photoelectron spectra shows that the zinc doped PdZn/Ti_0.8Zn_0.2O_1.8 film has a higher concentration of active PdZn sites and a better oxidative stability as compared to PdZn/TiO₂. The catalytic PdAg/TiO₂ and PdZn/Ti_0.8Zn_0.2O_1.8 demonstrated high stability in long-term experiments.

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连续流微反应器中2-甲基-3-丁-2-醇半加氢的高性能催化PdZn和PdAg膜

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来源期刊

Catalysis in Industry ENGINEERING, CHEMICAL-

CiteScore

1.30

自引率

14.30%

发文量

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.