Catalytic dehydrogenation of coal: Part 7. The effect of some catalyst variables

An Essay on the Organic Geochemistry of Coal

“…The published accounts of quantitative measurement of hydroaromatic hydrogen all raise some very interesting points, but no method, in my opinion, is altogether satisfactory (Peover, 1960;Given et al, 1963;Reggel et al, 1968). The published accounts of quantitative measurement of hydroaromatic hydrogen all raise some very interesting points, but no method, in my opinion, is altogether satisfactory (Peover, 1960;Given et al, 1963;Reggel et al, 1968).…”

“…6 seam with boiling chloroform. 1 1^e (Wilson et al, 1984); 32 hydroaromatic H per 100C atoms and CH X 8 average composition of aliphatic part of hydroaromatic structures (Reggel et al, 1968); 0.4, fraction of aromatic C that is protonated (Wilson et al, 1984). The amounts of extract varied but in some cases weighed as much as 20% of the starting coal.…”

Studies in coal liquefaction with application to the SRC and related processes. Quarterly report, November 1981-January 1982

“…The ability of tetral i11 to effectively dehydroge11ate in the presence of 4-picoline (4-methylpyridine) further suggests that catalyst poisoning by nitrogen heterocycles may not be a critical factor in CSD. These obs.ervations are reinforced by the work of Wender et.al.,(19,20) where several model hydroaromatics were found to readily dehydrogenate in the presence of the solvent phenanthradine.A plot of coal dissolution yields against normalized H 2 volumes (Figure 7)gives a fairly smooth correlation for the hydrogenated creo-. sate oils.…”

“…catalytic dehydroqenation of solid coal by Wender and coworkers (19,20). In their studies, coal was refluxed for 5 hr in the solvent phenanthradine at its boiling point (-370°c) was charged with about 1.00 g of the solvent to be monitored for hydroaromatic content.…”

Solvent tailoring in coal liquefaction. Quarterly report, February 1982-May 1982. [In many cases the simple organic compounds listed were hydrogenated]

“…In addition, catalytic dehydrogenation has been used to determine the hydroaromatic content of coals (9)(10) and of process solvents (.11).…”