Hydrocracking of vacuum residue into lighter fuel oils using nanosheet-structured WS2 catalyst

Young Gul Hur, Min Sung Kim, Dae Won Lee, Seongmin Kim, Hee Jun Eom, Gwangsik Jeong, Myoung Han No, Nam Sun Nho, Kwan Young Lee

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26 Citations (Scopus)

Abstract

In this study, we tried hydrocracking of vacuum residue into lighter liquid oils using dispersed colloidal catalysts composed of nanosheet-structured WS2 materials. The vacuum residue of API gravity = 2.3° was used as a reactant and hydrocracking reactions were performed in an autoclave batch reactor under 400 °C and the initial H2 pressure of 70 bar. Both single and multi-layer WS2 nanosheet catalysts were tested and their activities were compared with those of bulk WS2 and MoS2 catalysts. The single-layer WS2, which was the highest in specific surface area (97.6 m2/g) due to its smallest particle size, showed the best performances in commercial fuel fraction yield (45.4 wt.%), C 5-asphaltene conversion (75.3%), API gravity of liquid product (13.8°), and metal removal activity. To characterize the physicochemical properties of catalyst, various characterization techniques were applied, including transmission electron microscope (TEM), X-ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) analysis. In addition, to assess the qualities of hydrocracking products, we carried out API gravity measurement, inductively coupled plasma-mass spectrometry (ICP-MS), and simulated distillation (SIMDIS) analysis.

Original languageEnglish
Pages (from-to)237-244
Number of pages8
JournalFuel
Volume137
DOIs
Publication statusPublished - 2014 Dec 1

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ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Chemical Engineering(all)
  • Organic Chemistry

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