Interaction of RT3 (R=Ce, Y; T=Ni, Co) intermetallic compounds with alkaline solutions of MBH4 (M=Na, K, Rb, and Cs) |
| |
Authors: | I. I. Korobov N. G. Mozgina |
| |
Affiliation: | (1) Institute of New Chemical Problems, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation |
| |
Abstract: | The interaction of RT3 (R=Ce, Y; T=Ni, Co) intermetallic compounds (IMC)with alkaline solutions of MBH4 (M=Na, K, Rb, and Cs) was studied in the temperature range of 298–318 K. For all intermetallic compounds, the reaction of catalytic hydrolysis of NaBH4 is zero order with respect to MBH4 and first order with respect to RT3. The reaction rate decreases and the activation energy of the catalytic hydrolysis of MBH4 increases in the following order. NaBH4, KBH4, RbBH4, and CsBH4. The hydride phases RT3Hx (x2.3—3.9) were synthesized by the interaction of RT3 IMC with alkaline solutions of MBH4. They are similar in composition to the products formed in the reaction of RT3 with gaseous hydrogen at high pressure. The rate of hydrogenation of RT3 in alkaline solutions of MBH4 decreases on going from sodium to cesium. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 921–923, May, 1997. |
| |
Keywords: | alkali metal borohydrides catalytic hydrolysis reaction order intermetallic compounds hydride phases |
本文献已被 SpringerLink 等数据库收录! |
|