[boswell] catalysis OF HYDROGENATION BY NICKEL 25 



changed nickel oxide in the interior of the particles, and (2) as negative 

 hydroxyl groups accompanied by positive hydrogens on the surface 

 nickel of the particles. Adsorbed hydrogen is represented as positive 

 and negative hydrogens, whose formation on the nickel surfaces is 

 pictured as occurring in two ways. The mechanism of catalysis of 

 hydrogénation by means of a normal nickel catalyser is represented 

 by four reactions shown under experiment 7. 



The experimental work of this paper was performed by R. C. 

 Cantels, research assistant. 



References 



(1) Ber. 44, 1984 (1911); 



(2) Die Hydrierung durch Katalyse, p. 17; 



(3) J. Russ, Phys. Chem. Ges. 38, 419 (1906); 



(4) Ber. 41, 991; 



(5) J. Prakt. Chem. 87, 425 (1913); 



(6) Seifen Zeit. (1913), 47 and 191; Chem. Zeit. (1915), 29; 



(7) J. Ind. and Eng. Chem. 13, 775 (1921); 



(8) J. Amer. Chem. Soc. 43, 1273 (1921); 



(9) Ber. 54, 113 (1921); 



(10) Ann. de Chim. et de Phys. 4, 319 (1905); 



(11) Ber. 54, 1701 (1921); 



(12) J. Chem. Soc. 117, 623 (1920; 



(13) J. Amer. Chem. Soc. 34, 1310 (1912); 



(14) Zeit. f. Electro Chem. 27, 470 (1921); 



(15) Trans. Roy. Soc. of Can. 1922. 



University of Toronto, 

 School of Engineering Research. 



