Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10273763 | Fuel | 2005 | 6 Pages |
Abstract
A porphyrin-containing fraction isolated from the >500 °C residue of Chinese Gudao heavy oil was analyzed using laser desorption ionization-time of flight mass spectrometry (LDI-TOF-MS) for the first time. LDI-TOF-MS was revealed to be suitable for the characterization of petroporphyrins mixture. LDI-TOF mass analysis, combined with UV-vis measurement, indicated that the nickel porphyrins in Gudao residue are a mixture of ETIO homologues (C25-C34) maximizing at C30 and DPEP homologues (C28-C37) maximizing at C31. The ΣDPEP/ΣETIO ratio is about 1.04, suggesting Gudao oil is in the stage of becoming mature.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Hai Xu, Daoyong Yu, Guohe Que,