3606.     WATANABE, S., AND MORIKAWA, K.  Determination of the Activity of Catalysts Which Accelerate the Benzine Synthesis From Carbon Monoxide and Hydrogen at Ordinary Pressure.  Jour. Soc. Chem. Ind. (Japan), vol. 36, 1933, B, p. 226; Brennstoff-Chem., vol. 14, 1933, p. 391.

Several catalysts, the composition of which is not specified, were investigated for their utility in the benzine synthesis.  Their efficiency was determined in 2 ways.  First, the speed of reaction was determined at certain fixed temperatures by a method of F. Thoren (abs. 3399 and 3400).  The catalyst is heated carefully with the reaction gas in a closed glass vessel provided with a Hg manometer and the temperature and pressure are read off at short intervals.  The speed of reaction is, of course, not accurately determined, but it is close enough to determine at what temperature it changes suddenly.  Second, the activity of the various catalysts is determined on the basis of the yields in liquid hydrocarbons obtained with them.  The conclusion reached is that the efficiency of a catalyst is higher the lower the temperature at which the catalyst attains the maximum reaction velocity.