SULFATED ZIRCONIA - AN EFFICIENT PARASELECTIVE CATALYST FOR MONONITRATION OF HALOBENZENES

Authors
PARIDA KM PATTNAYAK PK
Citation
Km. Parida et Pk. Pattnayak, SULFATED ZIRCONIA - AN EFFICIENT PARASELECTIVE CATALYST FOR MONONITRATION OF HALOBENZENES, Catalysis letters, 47(3-4), 1997, pp. 255-257
Citations number
21
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
47
Issue
3-4
Year of publication
1997
Pages
255 - 257
Database
ISI
SICI code
1011-372X(1997)47:3-4<255:SZ-AEP>2.0.ZU;2-L
Abstract
The nitration of halobenzenes (chlorobenzene, bromobenzene and iodoben zene) was carried out using sulphated zirconia (SO42-/ZrO2) as catalys t and stoichiometric quantities of nitric acid and acetic anhydride in CCl4 medium at room temperature, 50 and 70 degrees C. The isolated yi eld of the nitrated product after vacuum distillation was found to be nearly 99% for all the halobenzenes. The order of selectivity to para- isomer was found to be chlorobenzene > bromobenzene > iodobenzene. The catalyst can be recycled at least five times with little decrease in its activity.