| 초록 |
Metal species (Ni and V) in as-received atmospheric residues (ARs) were characterised through conventional analysis methods as well as through a new analytical method of gas chromatography-atomic emission detection (GC-AED) assembled with a high-temperature injector system (HT GC-AED). HT GC-AED was attempted to confirm the characteristics of V and Ni species, from which at least five species of vanadium and six species of nickel in as-received ARs were identified, together with several shoulder peaks. In addition, HT GC-AED analysis of product oils after hydrodemetallisation (HDM) of ARs was investigated over both oxide and sulphide catalysts. This analysis provided evidence of a demetallisation mechanism for the cracking of the alkyl group attached to the metal porphyrin structure over oxide catalysts. |
