819.    ELWORTHY, R. T.  Synthetic Methanol.  Canadian Chem. and Met., vol. 9, 1925, pp. 139-140; Chem. Abs., vol. 19, 1925, p. 2403.

     Résumé of the Badische (abs. 1014, 1015), Patart, and Audibert processes for preparing MeOH from water gas and H₂, with a short bibliography.  The first process mentioned employs purified water gas containing 60% H₂, and 30% CO, together with CO₂ and N₂, at 200 atm. pressure, over a catalyst maintained at about 400°.  Catalysts are mixtures of metal oxides belonging to different groups in the periodic system, as 90 parts ZnO and 10 parts Cr₂O₃; 85 parts ZnO and 15 parts V oxide, or 90 parts CdO and 10 parts Cr₂O₃.  Gases used must be purified carefully, particularly for S and volatile Fe compounds.  The Merseberg plant produces about 10-20 tons per day at $0.20 per gal.  The Patart process (abs. 2141) uses as catalyst 90% CuO and 10% ZnO at temperatures of 400°-420° and at pressures of 150-250 atm.  It gives a product at $0.22-$0.32 per gal.  Audibert uses catalysts containing suboxides of V, Mn, W, Pb, and Bi.  Emphasizes economic importance of these processes.

      EMERT, O.  See abs. 2297.