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In this study, Cs-exchanged phosphotungstic acids (Cs x H 3−x PW 12 O 40 , x=1–3) were examined as a catalyst for the hydrocracking of extra-heavy oil (vacuum residue, API gravity=2.3°). Cs x H 3−x PW 12 O 40 showed a higher activity than the commercially available, NiMo/Al 2 O 3 -based catalyst in the hydrocracking...
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 70bar. Both single and multi-layer WS2 nanosheet catalysts...
In this study, nano-sized tungsten carbide (2.8 nm) particles with enhanced properties were successfully synthesized using removable ceramic coating method and then applied as dispersed catalysts to hydrocracking of vacuum residue, which was carried out at 673 K for 4 h with initial hydrogen pressure of 70 bar. The nano-sized particles were then characterized with XRD, TEM, and BET analysis. The temperature...
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