Cristin-resultat-ID: 1502032
Sist endret: 15. november 2018 13:14
NVI-rapporteringsår: 2018
Resultat
Vitenskapelig artikkel
2018

Monodispersed nickel and cobalt nanoparticles in desulfurization of thiophene for in-situ upgrading of heavy crude oil

Bidragsytere:
  • Kun Guo
  • Vidar Hansen
  • Hailong Li og
  • Zhixin Yu

Tidsskrift

Fuel
ISSN 0016-2361
e-ISSN 1873-7153
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2018
Publisert online: 2017
Trykket: 2018
Volum: 211
Sider: 697 - 703

Importkilder

Scopus-ID: 2-s2.0-85030312514

Beskrivelse Beskrivelse

Tittel

Monodispersed nickel and cobalt nanoparticles in desulfurization of thiophene for in-situ upgrading of heavy crude oil

Sammendrag

Monodispersed nickel (Ni) and cobalt (Co) nanoparticles (NPs) with different sizes are synthesized via the thermal decomposition of organometallic precursors by controlling the reaction temperature and surfactant amount. X-ray diffraction analysis of the as-prepared NP samples shows the formation of cubic Ni metal phases with good crystallinity, while the cubic Co metal samples are semi-amorphous. Transmission electron microscopy characterization further confirms that two Ni NP samples with average sizes of 9 and 27 nm, and Co NPs with an average size of 6 nm are successfully prepared with a narrow size distribution. Furthermore, catalytic performance of these monodispersed NPs towards the hydrodesulfurization (HDS) reaction, which plays a pivotal role in the upgrading of heavy crude oil, is evaluated under reservoir-relevant conditions using thiophene as a sulfur-containing model compound. Different parameters including particle size, catalyst dosage, hydrogen donor ratio, temperature, and reaction duration are systematically studied to optimize the catalytic HDS performance. The morphology and size of the spent NP catalysts after the reaction are also analyzed. The results show that the 9 nm Ni NPs exhibit the best HDS activity and stability compared with other catalysts, which suggests that such well-dispersed Ni NPs are promising candidates for the in-situ upgrading and recovery of heavy crude oil from underground reservoirs.

Bidragsytere

Kun Guo

  • Tilknyttet:
    Forfatter
    ved Institutt for energi- og petroleumsteknologi ved Universitetet i Stavanger

Vidar Folke Hansen

Bidragsyterens navn vises på dette resultatet som Vidar Hansen
  • Tilknyttet:
    Forfatter
    ved Institutt for maskin, bygg og materialteknologi ved Universitetet i Stavanger

Hailong Li

  • Tilknyttet:
    Forfatter
    ved Mälardalens högskola

Zhixin Yu

  • Tilknyttet:
    Forfatter
    ved Institutt for energi- og petroleumsteknologi ved Universitetet i Stavanger
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