450.    CAWLEY, C. M., CARLILE, J. H. G., NEWALL, H. E., AND KINGMAN, F. E. T.   Experiments on the Production of Toluene From Coal-Tar Products and Other Sources.  Jour. Inst. Petrol., vol. 32, 1946, pp. 660-683; Chem. Abs., vol. 41, 1947, p. 3601.

                  To supply the toluene requirements of Great Britain during the war, 5 sources of processes were investigated on a laboratory scale.  One process was the cyclization of n‑heptane obtained from Fischer-Tropsch oil.  With the aid of CrO₃ catalyst supported on active Al₂O₃, about 57% of toluene was obtained at first, later diminishing to 51%.

                 CHAFFEE, C. C.  See abs. 873, 874, 875, 876, 877, 878, 3549.