Characterization of petroporphyrins in Gudao residue by ultraviolet–visible spectrophotometry and laser desorption ionization-time of flight mass spectrometry

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....

Full description

Saved in:
Bibliographic Details
Published in:Fuel (Guildford) 2005-04, Vol.84 (6), p.647-652
Main Authors: Xu, Hai, Yu, Daoyong, Que, Guohe
Format: Article
Language:English
Subjects:
Applied sciences
Characterization
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fuels
LDI-TOF-MS
Petroporphyrins
UV–vis
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 (C 25–C 34) maximizing at C 30 and DPEP homologues (C 28–C 37) maximizing at C 31. The ΣDPEP/ΣETIO ratio is about 1.04, suggesting Gudao oil is in the stage of becoming mature.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2004.06.034