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- W208419070 abstract "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. Amore » 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.« less" @default.
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- W208419070 date "1983-01-01" @default.
- W208419070 modified "2023-09-27" @default.
- W208419070 title "A structural investigation of the effect of catalysis on the liquefaction products of a brown and a bituminous Australian Coal" @default.
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