Title of article :
A study of Cold Lake Vacuum Residue hydroconversion in batch and semi-batch reactors using unsupported MoS2 catalysts
Author/Authors :
Hooman Rezaei، نويسنده , , XueBin Liu، نويسنده , , Shahrzad Jooya Ardakani، نويسنده , , Kevin J. Smith، نويسنده , , Maureen Bricker، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
11
From page :
244
To page :
254
Abstract :
Hydroconversion of Cold Lake Vacuum Residue (CLVR) in both batch and semi-batch slurry reactors using unsupported MoS2 catalysts is reported. The MoS2 catalyst precursors were added to the CLVR either as an aqueous solution of ammonium heptamolybdate (AHM) or as molybdenum chloride dispersed in reversed micelles that were stabilized in n-hexane using a surfactant. At the reaction conditions studied in both the batch and semi-batch reactors, the MoS2 catalyst prepared in the reversed micelles had lower coke yield (toluene-insoluble material), lower gas yield, higher liquid yield and higher H2 consumption, compared to the AHM-derived MoS2 catalyst. The coke–catalyst mixture recovered after reaction, characterized by chemical and energy dispersive X-ray analysis, confirmed that most of the added catalyst was captured by the coke. Analysis of the coke by X-ray diffraction and transmission electron microscopy confirmed the presence of highly dispersed MoS2 that suggests the possibility of catalyst–coke recycle.
Keywords :
catalyst recycle , Coke formation , MoS2 , Reversed micelle , Coke characterization , Bitumen upgrading , Hydroconversion , Catalyst
Journal title :
CATALYSIS TODAY
Serial Year :
2010
Journal title :
CATALYSIS TODAY
Record number :
1237306
Link To Document :
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