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Abstract <p>The composition of gaseous products formed during hydroupgrading of a model feedstock containing benzothiophene and 2-methylnaphthalene over unsupported (dispersed) Ni–Mo sulfide catalysts under the water gas shift reaction conditions (reaction of carbon monoxide with water) was studied. The influence of the reaction conditions (<i>Т </i>= 340–400°C, <i>Р </i>= 5 MPa (at 25°C), <i>t </i>= 4–10 h) on the conversion of individual feed components and composition of gaseous products was examined. The process conditions ensure <i>in situ</i> hydrogen generation (Н<sub>2</sub> content 25–30 vol %) and formation of hydrocarbon gases by methanation and hydrogenation of CO and СО<sub>2</sub> (СН<sub>4</sub> content up to 50 vol %, content of С<sub>2</sub>–С<sub>4</sub> hydrocarbons 23–30 vol %). For the model feedstock with equimolar component ratio, at 360–380°C, CO pressure of 5 MPa (at 25°C), and water content of 10 wt %, the 2-methylnaphthalene conversion in 8–10 h does not exceed 30–34%, whereas for the benzothiophene it reaches 100% already in 4 h.</p>

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Gas-Phase Reactions in Hydroupgrading of Model Petroleum Feed over Dispersed Ni–Mo Sulfide Catalysts under Water Gas Shift Reaction Conditions

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • E. A. Mustakimova,
  • E. N. Maifet,
  • E. S. Abramov,
  • G. O. Zasypalov,
  • A. L. Maximov,
  • A. V. Vutolkina

摘要

Abstract

The composition of gaseous products formed during hydroupgrading of a model feedstock containing benzothiophene and 2-methylnaphthalene over unsupported (dispersed) Ni–Mo sulfide catalysts under the water gas shift reaction conditions (reaction of carbon monoxide with water) was studied. The influence of the reaction conditions (Т = 340–400°C, Р = 5 MPa (at 25°C), t = 4–10 h) on the conversion of individual feed components and composition of gaseous products was examined. The process conditions ensure in situ hydrogen generation (Н2 content 25–30 vol %) and formation of hydrocarbon gases by methanation and hydrogenation of CO and СО2 (СН4 content up to 50 vol %, content of С2–С4 hydrocarbons 23–30 vol %). For the model feedstock with equimolar component ratio, at 360–380°C, CO pressure of 5 MPa (at 25°C), and water content of 10 wt %, the 2-methylnaphthalene conversion in 8–10 h does not exceed 30–34%, whereas for the benzothiophene it reaches 100% already in 4 h.