22 REVIEW AND BIBLIOGRAPHY 



MOLYBDENUM AND CARBON. 



M02C is best prepared by heating together 5 pts. M0O2 and i pt C for 

 eight to ten minutes in a carbon crucible. 800 amp. and 50 volts is 

 sufficient current. The carbide shows a brilliant, crystalline fracture, 

 exhibits easy cleavage ; sp. gr. 8.9. If this carbide is heated with an 

 excess of molybdenum dioxide, molybdenum is produced, and inversely, 

 fused molybdenum readily takes up considerable carbon. 



LITERATURE. 



MoisSAN. Preparation au four electrique de quelques metaux refractaires ; tungstene, 



molybdene, vanadium. C. R. 116, p. 1225, or Abs. J. Chem. Soc. (1893) 64, pt. 2, 



p. 471, or Bull. Soc. Chim. [3] 11, p. 857. 

 MoissAN. Preparation at proprietes du molybdene pur fondu. C. R. (1895) 120, 



p. 1320, or Abs. J. Chem. Soc. (1895) 68, pt. 2, p. 497, or Bull. Soc. Chim. (1895) 



[3] 13. P- 967- 



NICKEL AND CARBON. 



Nickel and carbon act in many ways like iron and carbon. By heating 

 4Ni(CN)2-{-3H20 under proper conditions carbon-containing nickel re- 

 sults. (See Dammer.) When carbon monoxide is passed over finely 

 divided nickel at a temperature between 300° and 35o°C, there results 

 a black powder consisting of Ni and C, varying with the temperature at 

 which the operation was conducted. Ni is said to act in the same way 

 with certain hydrocarbon gases. 



LITERATURE. 



DoBEREiNER. N. J. dcf Pharm. [Trommsdorff, 1820 (?)] 4, pp. i and 293. 



Ross and Irving. Ann. Phil. (1862) p. 149. 



MoND, Langer and Quincke. [Action of CO on Ni] Trans. J. Chem. Soc. (1890) 



vol. 57, p. 749, Chem. News (62) p. 97. 

 See also Gautier and Hallopeau. C. R. (1889) ^°^) P* mi- 

 MoND and Langer. D. R. P. 51,572, 14/6, 1889; Patentblatt (11), p. 356; Chem. 



Centrbl. (1890) II, p. 32. 

 MoissAN (foot-note). Bull. Soc. Chim. (1894) [3] 11, p. 13. 



PALLADIUM AND CARBON. 



According to Moissan palladium forms no carbide in the electric fur- 

 nace. Other chemists mention a carbide of palladium. 



LITERATURE. 



Wohler. Ueber die Wirkung des Palladium auf die Weingeist Flamme. (Pogg.) Ann. 



der. Phys. 3, p. 71. See also 

 II. B. Miller. Ann. Phil. 28, p. 20, and 

 Berzelius. Lehrbuch der Chemie (1836), III, p. 249, and 

 Moissan. Sur la solubilite du carbone dans le rhodium, I'iridium et le palladium. C. R. 



123, p. 16, or Bull. Soc. Chim. (1896) [3] 16, p. 1292. 

 Moissan. Research on the metallic carbides. Chem. News, 74, p. 15. 



