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Return to Abstracts of Literature 1750-1999
1869. MURATA, Y., AND TSUNEOKA, S. Benzine Synthesis From Carbon Monoxide and Hydrogen at Ordinary Pressure. XXXIII. Relation of Free Space in the Reaction Tube and the Reaction Rate of the Initial Gas, and Also the Influence of Materials Mixed With the Catalyst. Jour. Soc. Chem. Ind. (Japan), vol. 40, No. 11, suppl., 1937, pp. 438-441; Sci. Papers Inst. Phys. Chem. Research (Tokyo), vol. 33, 1937, pp. 313-332; Chem. Abs., vol. 32, 1938, p. 1426.
With a horizontal contact tube the contact between the incoming gas and the catalyst becomes insufficient when the free space above the catalyst goes above a certain limiting value. With a catalyst layer length of 30 cm. and a gas flow of 4 l. per hr. this maximum value is 13 mm. For a given gas-volume velocity and catalyst layer length this value decreases as the diameter of the tube is increased. Natural silica and Fe are useful as packing materials. Active charcoal and silica gel are unsuitable. The I-number of the generated benzine decreases if the catalyst is mixed with other substances; that is, if the free space in the reaction tube is decreased. When the catalyst is to be used with other substances complete mixing is necessary.