Steam pretreatment for coal liquefaction. [Monthly report], December 1, 1993--December 31, 1993

The effect of exposing coal sample no. 31 which was pretreated in steam to air was tested this month. Significant differences from yields obtained with the previously used sample is observed. Consequently, averaging yields from the two samples is not appropriate and the pattern of behavior of each set must be determined separately. Further work will be done using new Illinois No.6 coal sample. Analysis of the products of aquathermolysis of {beta}benzylnaphthyl ether in presence of liquid water were completed. Major product is naphthol. Minor fraction was determined to be unreacted starting material. The purity check of the sample of a-naphthylmethyl phenyl ether was completed. Studies of this model compound will be performed next month