2500a. OGAWA, E., AND MURATA, K. Catalytic Action of Nickel-Iron-Cobalt Wire Under Tension on the Reaction Between Ethylene and Hydrogen. Jour. Soc. Chem. Ind. (Japan), vol. 45, suppl. binding, 1942, pp. 386-387 (in English); Chem. Abs., vol. 44, 1950,

2500a. OGAWA, E., AND MURATA, K. Catalytic Action of Nickel-Iron-Cobalt Wire Under Tension on the Reaction Between Ethylene and Hydrogen. Jour. Soc. Chem. Ind. (Japan), vol. 45, suppl. binding, 1942, pp. 386-387 (in English); Chem. Abs., vol. 44, 1950, p. 7,636.

Activation energy of H₂+C₂H₄ reaction is raised from 16,400 to 17,800 cal. by placing under tension Ni-Fe-Co alloy wire used as a catalyst. The difference is caused by the orientation of the magnetic axis of each magnetic domain from its random distribution.