Electron spin resonance studies with copper/silver/chromium impregnated charcoals

✍ Scribed by Edward J. Poziomek; Raymond A. Mackay; Richard P. Barrett

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 425 KB
• Volume: 13
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(75)90025-1

✦ Synopsis

It has been found that cyanogen chloride reacts with humidified ASC whetlerite (an activated charcoal impregnated with copper/silver/chromium) to give a strong electron spin resonance (esr) signal. The microwave absorption consists of a symmetric line with a g value of 2.12 and a width of 19Ogauss, and a weaker, broader line under the high field tail of the sharper line. Neither hydrogen chloride, tert-butylamine nor carbon monoxide were found to give a signal. However, exposure of the humidified whetlerite to hydrogen cyanide gave a broad, intense, esr line (width 475 gauss, g value 2.00). The results of these studies are discussed in terms of the mechanism of reaction, the nature of the active species, and the quantitative relationship between esr signal strength and extent of reaction.