INFLUENCE OF H3PMO12O40 SIO2 THERMAL-TREATMENT ON ADSORBED FORMS OF FORMALDEHYDE AND FORMIC-ACID/

Authors
POPOVA GY BUDNEVA AA ANDRUSHKEVICH TV
Citation
Gy. Popova et al., INFLUENCE OF H3PMO12O40 SIO2 THERMAL-TREATMENT ON ADSORBED FORMS OF FORMALDEHYDE AND FORMIC-ACID/, Reaction kinetics and catalysis letters, 62(1), 1997, pp. 97-103
Citations number
10
Categorie Soggetti
Chemistry Physical
Journal title
Reaction kinetics and catalysis letters → ACNP
ISSN journal
01331736
Volume
62
Issue
1
Year of publication
1997
Pages
97 - 103
Database
ISI
SICI code
0133-1736(1997)62:1<97:IOHSTO>2.0.ZU;2-R
Abstract
Effect of the H3PMo12O40/SiO2 (P-Mo-HPA) thermal treatment on adsorbed forms of HCOOH and H2CO has been studied by IR spectroscopy. On the s ample pretreated at 150 degrees C, HCOOH adsorbed mainly as hydrogen-b onded complexes. The HPA calcination at 350 degrees C resulted in the formation of surface formates along with hydrogen-bonded complexes. Th is proves the formation of coordinatively unsaturated surface cations (Lewis acid sites) during HPA dehydration. Alteration of the surface c omposition due to dehydration was found to have a major influence on t he H2CO adsorbed forms.