The role of ammonium ions during toluene ammoxidation on α-(NH4)2[(VO)3(P2O7)2] used as catalyst

✍ Scribed by Andreas Martin; Yue Zhang; Horst W. Zanthoff; Manfred Meisel; Manfred Baerns

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 282 KB
• Volume: 139
• Category: Article
• ISSN: 0926-860X
• DOI: 10.1016/0926-860x(96)00056-7

✦ Synopsis

Isotopic transient experiments in vacuum of the ammoxidation of toluene were carried out, applying the temporal-analysis-of-products reactor (TAP) using o~-(14NH4)z[(VO)3(P207)2] as catalyst and ISNH3-containing ammoxidation feed gas. The study revealed the participation of ammonium ions in the N-insertion step during benzonitrile formation. The benzonitrile formed during the ammoxidation pulses is composed of the 14N-and 15N-product. The share of the ~SN-benzonitrile increased with pulse number.