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

Research output: Contribution to journalArticle

25 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

Fingerprint

Fuel Oils
Hydrocracking
Nanosheets
Fuel oils
Application programming interfaces (API)
Vacuum
Gravitation
Catalysts
Inductively coupled plasma mass spectrometry
Autoclaves
Batch reactors
Liquids
Specific surface area
Distillation
Oils
Electron microscopes
Metals
Particle size
X ray diffraction

ASJC Scopus subject areas

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

Cite this

Hydrocracking of vacuum residue into lighter fuel oils using nanosheet-structured WS2 catalyst. / Hur, Young Gul; Kim, Min Sung; Lee, Dae Won; Kim, Seongmin; Eom, Hee Jun; Jeong, Gwangsik; No, Myoung Han; Nho, Nam Sun; Lee, Kwan Young.

In: Fuel, Vol. 137, 01.12.2014, p. 237-244.

Research output: Contribution to journalArticle

Hur, YG, Kim, MS, Lee, DW, Kim, S, Eom, HJ, Jeong, G, No, MH, Nho, NS & Lee, KY 2014, 'Hydrocracking of vacuum residue into lighter fuel oils using nanosheet-structured WS2 catalyst', Fuel, vol. 137, pp. 237-244. https://doi.org/10.1016/j.fuel.2014.07.094
Hur, Young Gul ; Kim, Min Sung ; Lee, Dae Won ; Kim, Seongmin ; Eom, Hee Jun ; Jeong, Gwangsik ; No, Myoung Han ; Nho, Nam Sun ; Lee, Kwan Young. / Hydrocracking of vacuum residue into lighter fuel oils using nanosheet-structured WS2 catalyst. In: Fuel. 2014 ; Vol. 137. pp. 237-244.
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AU - Jeong, Gwangsik

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AB - 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.

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