Effects of Heat Treatment Temperature on the Physicochemical Properties and Catalytic Performance of Bulk Ni–Mo–W Catalysts

IF 1.3 4区工程技术 Q3 CHEMISTRY, ORGANIC Petroleum Chemistry Pub Date : 2024-04-01 DOI:10.1134/S0965544124010043

P. P. Mukhacheva, Yu. V. Vatutina, K. A. Nadeina, S. V. Budukva, V. P. Pakharukova, I. G. Danilova, M. A. Panafidin, O. V. Klimov, A. S. Noskov

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Abstract

The present study investigates the effects of heat treatment temperature on the physicochemical properties of bulk granular Ni–Mo–W catalysts. A series of bulk catalysts were synthesized and characterized by X-ray diffraction analysis, low-temperature nitrogen adsorption/desorption, CHNS elemental analysis, Raman spectroscopy, and X-ray photoelectron spectroscopy. To evaluate the catalytic activity in hydrodesulfurization and hydrodenitrogenation reactions, the catalyst samples were tested in hydrotreating of vacuum gasoil. It was found that the bulk granular catalysts calcined at 400°C and lower temperatures were mainly X-ray amorphous. In the samples calcined above 400°C, a nickel molybdate phase was predominant. In these samples, the content of an active sulfide phase after sulfidation was lower than that in the samples prepared from X-ray amorphous oxide precursors. The test data showed that the catalyst calcined at 300ºC exhibited the highest activity in the hydrodesulfurization of vacuum gasoil.

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热处理温度对块状 Ni-Mo-W 催化剂理化性质和催化性能的影响

摘要本研究探讨了热处理温度对块状颗粒 Ni-Mo-W 催化剂理化性质的影响。研究人员合成了一系列块状催化剂，并通过 X 射线衍射分析、低温氮吸附/解吸、CHNS 元素分析、拉曼光谱和 X 射线光电子能谱对其进行了表征。为了评估加氢脱硫和加氢脱氮反应的催化活性，对催化剂样品进行了真空气油加氢处理测试。结果发现，在 400°C 及更低温度下煅烧的块状颗粒催化剂主要呈 X 射线无定形。在 400°C 以上煅烧的样品中，钼酸镍相占主导地位。在这些样品中，硫化后活性硫化物相的含量低于用 X 射线无定形氧化物前驱体制备的样品。测试数据表明，在真空气油的加氢脱硫过程中，煅烧温度为 300ºC 的催化剂活性最高。

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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.