Heteronuclear probes of coal structure and reactivity. Quarterly report, October--December 1993
This progress report highlights seven achievements on the project. Vacuum impregnation of Ill. No. 6 with PBu{sub 3} raised the sulfur removal from 92 to 99%. Pre-drying the coal does not alter this result. Whereas partial sulfur removal by PBu{sub 3} from dibenzothiophene is catalyzed by Ill. No. 6, graphite is not a catalyst. Whereas FeCl{sub 3} catalyzes quantitative sulfur removal by PBu{sub 3} from dibenzothiophene, zerovalent iron solubilized as Fe(PBu{sub 3}){sub x} in PBu{sub 3} is not. An initial attempt to perform HDS on Ill. No. 6 catalyzed by PBu{sub 3} failed. The {sup 31}P NMR peak at 32 ppm tentatively assigned to PHBu{sub 3}{sup +} was placed in doubt owing to its persistence in the presence of superbase P(MeNCH{sub 2}CH{sub 2}){sub 3}N. Optimum HPLC parameters were established for SOH and ASOH oils (CONSOL coal resids).
- Research Organization:
- Iowa State Univ. of Science and Technology, Ames, IA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-92PC92531
- OSTI ID:
- 10141774
- Report Number(s):
- DOE/PC/92531-T4; ON: DE94009711; TRN: 94:004585
- Resource Relation:
- Other Information: PBD: 31 Jan 1994
- Country of Publication:
- United States
- Language:
- English
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