AMMOXIDATION OF TOLUENE ON VANADYL POLYPHOSPHATES - VO(PO3)(2),1 - SYNTHESIS AND CHARACTERIZATION OF THE PARENT SAMPLES

Citation
Fk. Hannour et al., AMMOXIDATION OF TOLUENE ON VANADYL POLYPHOSPHATES - VO(PO3)(2),1 - SYNTHESIS AND CHARACTERIZATION OF THE PARENT SAMPLES, Reaction kinetics and catalysis letters, 63(2), 1998, pp. 225-233
Citations number
26
Categorie Soggetti
Chemistry Physical
ISSN journal
01331736
Volume
63
Issue
2
Year of publication
1998
Pages
225 - 233
Database
ISI
SICI code
0133-1736(1998)63:2<225:AOTOVP>2.0.ZU;2-9
Abstract
Vanadyl polyphosphates with a P/V ratio = 2 (crystalline alpha-VO(PO3) (2) and beta-VO(PO3)(2) as well as amorphous VO(PO3)(2)) were synthesi zed, starting from usually prepared precursor VO(H2PO4)(2) but pursuin g new methods using V2O5/H3PO4 as well as VOHPO4 . 1/2 H2O/H3PO4, too. The products were characterized by chemical analysis and X-ray diffra ctometry. In situ ESR spectroscopy was used as a tool to predict their catalytic activity in the ammoxidation reaction.