Separation and characterization of coal derived components
Eight samples rich in monohydroxyl aromatics and dihydroxyl aromatics were submitted to SRI International for field-ionization mass spectral analyses. An important breakthrough was made when it was discovered that a ..mu..-Porasil column and carbon tetrachloride: dimethyl sulfoxide mobile phases could be used to separate preasphaltenes-1 and preasphaltenes-2 in F-51. For F-45, preasphaltenes-1 and about 65% of preasphaltenes-2 could be separated. In addition, with a ..mu..-Bondapak NH/sub 2/ column and chloroform:2-propanol mobile phases the monohydroxyl aromatics and dihydroxyl aromatics in oils and asphaltenes were separated. Encouraging results were obtained for the compound class separation of hydroaromatics and polycyclic aromatic hydrocarbons, aromatic nitrogen compounds, and hydroxyl aromatics using a Nucleosil NO/sub 2/ column and n-heptane:chloroform mobile phases. 3 references, 4 tables, 4 figures.
- Research Organization:
- Wyoming Univ., Laramie (USA)
- DOE Contract Number:
- AC22-83PC60015
- OSTI ID:
- 5000414
- Report Number(s):
- DOE/PC/60015-12; ON: DE84010414
- Country of Publication:
- United States
- Language:
- English
Similar Records
Separation and characterization of coal derived components
Separation and characterization of coal derived components. Report period: 1 January-31 March 1985. [Hydroxyl aromatics]