Heteronuclear probes of coal structure and reactivity. Quarterly report, October--December 1993

Technical Report · Mon Jan 31 04:00:00 EST 1994

DOI:https://doi.org/10.2172/10141774· OSTI ID:10141774

Verkade, J G; Hall, G

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
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402
010600
CATALYSTS
CATALYTIC EFFECTS
COAL
DESULFURIZATION
IRON CHLORIDES
NUCLEAR MAGNETIC RESONANCE
PHOSPHORUS 31
PROGRESS REPORT
PROPERTIES AND COMPOSITION
PURIFICATION AND UPGRADING