PATENTS

      183.            BICHOWSKY, F. R.  (Delco-Light Co.).  Methyl Ether.  British Patent 278,353, Sept. 28, 1926.  Chem. Age, vol. 17, 1927, p. 515; Chem. Abs., vol. 22, 1928, p. 2573.

Mixture of Co and H₂ is passed at an elevated temperature and pressure, suitably 500° and 125° atm., over a hydrogenation catalyst, suitably ZnO and reduced Cu or Cr salts but excluding Fe, and then over a dehydration catalyst or over a mixture of both catalysts; or, MeOH may be passed over a dehydration catalyst.  Alumina prepared by partly dehydrating Al(OH)₃ at 300°, partly dehydrated Ti hydroxide, Th hydroxide, or silica gel may be used as a dehydration catalysts.  Gives various details.  Describes apparatus.