PSOC

Original coals PSOC NO. Ultimate analysis (d. a.f. ) Proximate analysis Characteristics Conv. (50... 

Furthermore, in P.H. Given s data, the lignite sample, PSOC 87 coal is very reactive though its inert content is higher, and deviates considerably from the general tendency. This seems to indicate that this coal was chemically treated. 

Coals covering a range of rank downwards from low-volatile bituminous were examined in solvent-free catalytic hydrogenation over the temperature range 300-400°C and for reaction times up to 60 min. The work discussed here specifically Involved four coals which were obtained form the Penn State Coal Sample Bank. These were a subbituminous coal PSOC-1403, and three hvAb bituminous coals, PSOC-1168, PSOC-1266 and PSOC-1510. 

Penn State Sample PSOC-1403 PSOC-1266 PSOC-1168 PSOC-1510... 

Figure 1. Relationship of H2 consumption and 0/A ratio for hvAb coal, PSOC-1266 (solvent-free hydrogenation 400°C 1% wt sulfided Mo 7MPa H2 cold).

Figure 2. Variation in atomic H/C ratio versus chloroform-soluble yields from subbituminous (PSOC-1403) and bituminous (PSOC-1266) coals (solvent-free hydrogenation 300-400°C 5-180 min 1% wt sulfided Mo 7 MPa H2 cold) (data from refs 7 and 8).

It is to be noted that the magnitude of the increase in each of the measured properties, between the initial and maximum values, was quite different for the subbituminous coal and the three bituminous coals. Examples of the increases from the initial value (determined for the chloroform-soluble extract from the parent coal) to the maximum are the 0/A ratio increased from 0.8 initial value to 8.0 maximum value for the subbituminous coal, PSOC-1403, and from 0.25 to 1.5 for the bituminous coal, PSOC-1266 the H/C atomic ratio increased from 1.46 to 1.60 for the subbituminous coal, PSOC-1403, and from 1.01 to 1.06 for the bituminous coal, PSOC-1266 (see Figure 2). 

For each coal, at the maximum in hydrogen content, or H/C atomic ratio, the aliphatic hydrogen content (determined by H NMR analysis) accounted for over 90% of the total hydrogen. The aliphatic hydrogen contents were 10.5% for the subbituminous coal,PSOC-1403, and 6.9% for the bituminous coal, PSOC-1266. The high aliphatic hydrogen content was associated with the presence of polymethylene chains. The early release of paraffinic material, as n-alkanes and as long chain substituents to aromatic structures, under conditions of mild pyrolysis has been observed in other research (13-15. ... 

Chloroform extraction of the whole products of dry hydrogenation (400 C 60 min 5% Mo 7 MPa H,) of PSOC-1266 produced a strongly fluorescent extract and non-fIncrescent residue. After drying, the extract was seen under the microscope to contain two components with distinctive fluorescence characteristics (Fig. 7). Component 1 had a fluorescence spectrum very similar to that of the oil (hexane-soluble) fraction of the same... 

Figure 6. Relations among fluorescence intensity, chloroform-solubles yield and Gieseler placticity for hydrogenated coal (PSOC-1510 solvent-free hydrogenation, 400 C 5-60 min 1% wt sulfided Mo 7 MPa H2 cold.

Figure 7. Comparison of fluorescence spectra of two components in chloroform-solubles fraction with oil and asphaltene fractions of hydrogenated coal (PSOC-1266 solvent-free hydrogenation 400 C 60 min 5% wt sulfided Mo 7 MPa H2 cold).

Fi re 2. Comparison of FT-IR Spectra for Residue and Parent Coal for PSOC-1401 Wyodak Subbitiuninous Coal. 

Tabled - Quantitative FT-IR Analysis (Duplicates) of PSOC-1401 Products at 350 C. (wt.% dmmf)...

The coals used were PSOC 1098 Illinois 6 and Beulah-Zap North Dakota lignite from the Argonne coal bank. The analytical data of these coals are shown in Table I. The ratio of catalyst to coal was approximately 0.6 mmoles of metal per gram of coal. The organometallic catalysts were molybdenum(II) acetate dimer, Mo2(OAc)4, obtained from Strem, molybdenum(II) allyl dimer Mo2(OAc)4, was prepared by die method of Cotton and Pipal (25). The NiMo supported catalyst was prepared by addition of bis(l,5-cyclooctadiene) Ni(0) (Strem) to sulfided Mo on alumina (. Cp2Mo2( l-SH)2(p.-S)2, referred to as MoS2(OM), was prepared by modification of method of Dubois et al. (26), and Cp2Mo2Co2( i3-S)2(li4-S)(CO)4, CoMo(OM) was prepared by the method of Curtis et al. (27). Pentacarbonyl iron was obtained from Aldrich,... 

Lower Dekoven Seam, Will Scarlett Mine, 111., PSOC-284 (ppm) l... 

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