Influence of the Structural Type of Zeolites on the Physicochemical and Catalytic Properties of NiMo Sulfide Catalysts in the Hydrotreating of Triglyceride Feedstock

IF 1.1 4区工程技术 Q3 CHEMISTRY, ORGANIC

Petroleum Chemistry Pub Date : 2025-06-30 DOI:10.1134/S0965544125600900

N. A. Vinogradov, E. A. Ardakova, M. Yu. Talanova, N. A. Sinikova, E. A. Mustakimova, A. A. Pimerzin, A. V. Vutolkina

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Abstract

NiMo sulfide catalysts supported on zeolites of various structural types were prepared by incipient wetness impregnation. The materials, supports, and catalysts based on them were characterized by low-temperature nitrogen adsorption, energy-dispersive X-ray fluorescence analysis, Fourier IR spectroscopy of adsorbed pyridine, and transmission electron microscopy. The catalytic properties of the systems in the hydrodeoxygenation/hydroisomerization of the triglyceride feedstock were studied using a fixed-bed flow-through reactor at T = 280–340°С, P = 4 MPa, hydrogen to feed ratio H/F of 600 nl/l, and liquid hourly space velocity LHSV of 1–2 h^–1. For all the catalytic systems irrespective of the support type, the degree of deoxygenation reaches 100%, and at T = 320°С and LHSV = 1 h^–1 the relative content of alkane isomerization products decreases in the order NiMoS/A (SiO₂/Al₂O₃ = 30) > NiMoS/B (SiO₂/Al₂O₃ = 300) > NiMoS/D (SiO₂/Al₂O₃ = 30) > NiMoS/C (SiO₂/Al₂O₃ = 48).

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沸石结构类型对硫化镍催化剂加氢处理甘油三酯理化及催化性能的影响

采用初湿浸渍法制备了不同结构类型沸石上负载的硫化镍催化剂。通过低温氮吸附、能量色散x射线荧光分析、吸附吡啶的傅立叶红外光谱和透射电镜对材料、载体和催化剂进行了表征。采用固定床流式反应器，在温度为280 ~ 340°С， P = 4 MPa，氢料比H/F为600 nl/l，液时空速LHSV为1 ~ 2 H - 1的条件下，研究了体系在甘油三酯原料加氢脱氧/加氢异构化反应中的催化性能。在T = 320°С和LHSV = 1 h-1条件下，烷烃异构化产物的相对含量依次为NiMoS/A (SiO2/Al2O3 = 30) > NiMoS/B (SiO2/Al2O3 = 300) > NiMoS/D (SiO2/Al2O3 = 30) > NiMoS/C （SiO2/Al2O3 = 48）。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.