Nickel-Containing Catalysts of Ethylene Conversion for Synthesizing Motor Fuel Components and Light Alkenes

IF 0.7 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2025-01-27 DOI:10.1134/S2070050424700247

T. R. Karpova, A. V. Lavrenov, M. A. Moiseenko, E. A. Buluchevskii, T. I. Gulyaeva, A. B. Arbuzov

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Abstract

Polyfunctional nickel-containing catalysts based on B₂O₃–Al₂O₃ and MoO₃–Al₂O₃ oxide supports have been synthesized by sequential impregnation and studied in the conversion of ethylene into C₅₊ alkenes or propylene. The physicochemical properties of the prepared catalysts has been studied using X-ray diffraction analysis, IR spectroscopy, IR spectroscopy of adsorbed CO, UV-Visible diffuse reflectance spectroscopy (UV-Vis DRS), temperature-programmed reduction of hydrogen (H₂-TPR), and temperature-programmed desorption of ammonia (TPD-NH₃). The most active catalysts of ethylene oligomerization are NiO/B₂O₃–Al₂O₃, where Ni²⁺ cations chemically bounded to the acidic support are formed. NiO/MoO₃–Al₂O₃ activity in conversion of ethylene to propylene is provided by the presence on the surface of ethylene dimerization active sites, i.e., Ni²⁺ cations bounded with the support acidic sites, and active sites of metathesis based on monomolybdate species.

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合成发动机燃料组分及轻烯烃用乙烯转化含镍催化剂

采用序浸渍法制备了B2O3-Al2O3和MoO3-Al2O3氧化物载体的多官能团含镍催化剂，并对乙烯转化为C5+烯烃或丙烯进行了研究。采用x射线衍射分析、红外光谱、吸附CO的红外光谱、紫外-可见漫反射光谱（UV-Vis DRS）、程序升温还原氢（H2-TPR）和程序升温解吸氨（TPD-NH3）等方法研究了催化剂的理化性质。乙烯低聚反应最活跃的催化剂是NiO/ B2O3-Al2O3，其中Ni2+阳离子与酸性载体形成化学结合。NiO/ MoO3-Al2O3在乙烯转化为丙烯中的活性是由乙烯二聚化活性位点的存在提供的，即与支持酸性位点结合的Ni2+阳离子和基于单钼酸盐的复分解活性位点。

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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.