A structural investigation of the effect of catalysis on the liquefaction products of a brown and a bituminous Australian Coal

Conference · Sat Jan 01 00:00:00 EST 1983 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:6615259

Strachan, M G; Johns, R B; Vassallo, A M

The paper reports a study comparing the effects of a single catalyst, Co/Mo, on two Australian coals of different rank at their uncatalyzed optimal oil yield temperatures under donor solvent conditions. It was considered more appropriate to compare the products from the two coals at their respective optimal oil yield temperatures rather than at the same temperature. The former accounts and compensates for differing thermal reactivities with rank, thereby allowing a direct comparison of product qualities to be made. The coals used for the study were a Victorian brown coal, LY1277, from the Loy Yang Field, a medium-light lithotype, and a N.S.W. high volatile bituminous coal from the Liddell Field. They were chosen because of their known liquefaction potential. They were reacted at 375/sup 0/C and 425/sup 0/C respectively, in batch autoclaves using a solvent (tetralin) coal ratio of 2:1, a catalyst concentration of 10% w/w coal and were reacted for 2 hours at temperature. The total liquid product (TLP) (defined as CH/sub 2/Cl/sub 2/ solubles) was fractionated by a separation method designed specifically to separate by functionality into chemically defined classes viz. acids, bases and neutrals. This method utilizes a sequence of ion-exchange resins and silica adsorption chromatography. A feature of the method is that it does not remove the donor solvent until all the polar material is absent, hence alleviating the risk of thermal alteration of the samples as may occur with an initial dissolution step. The method is very effective in class separation.

• Research Organization: Department of Organic Chemistry, University of Melbourne, Parkville, Victoria
• OSTI ID: 6615259
• Report Number(s): CONF-830814-
• Journal Information: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Vol. 28:5; Conference: 186. national meeting of the American Chemical Society, Washington, DC, USA, 28 Aug 1983
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AUSTRALIA
COAL INDUSTRY
COAL LIQUEFACTION
CATALYSTS
COAL LIQUIDS
CHEMICAL ANALYSIS
FRACTIONATION
AUTOCLAVES
CATALYSIS
CATALYTIC EFFECTS
CHROMATOGRAPHY
COBALT
MOLYBDENUM
TETRALIN
AROMATICS
AUSTRALASIA
ELEMENTS
FLUIDS
HYDROCARBONS
INDUSTRY
LIQUEFACTION
LIQUIDS
METALS
ORGANIC COMPOUNDS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction