摘要
A Cambrian solid bitumen from northwestern Sichuan Basin, southern China was analyzed using two different flash pyrolysis methods coupled with gas chromatography-mass spectrometry analysis, including Pyroprobe (R) and analytical laser micropyrolysis. Results show that pyrolysis products from a Pyroprobe (R) (model 5000) analysis are dominated by mono-, di- and tricyclic aromatic hydrocarbons, whilst those from laser micropyrolysis are dominated by aliphatic hydrocarbons (n-alk-1-ene/n-alkane doublets), which is consistent with the results from an FT-IR spectrum of the solid bitumen. According to the molecular compositions of the pyrolysates from two types of pyrolysis, results from a 532 nm continuous wave laser may be more suitable for pyrolysis research of bitumen/asphaltene. Thus, differences in pyrolysis techniques must be considered when used to characterize oil asphaltenes or source rock kerogens.
- 出版日期2014-4
- 单位南京大学