ISSN:
1572-9028
Keywords:
β zeolite
;
dealumination
;
vanadium
;
dehydroxylation
;
FT-IR
;
UV-visible
;
ESR
;
TPR
;
51V and 29Si NMR
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract A dealuminated zeolite β has been contacted with solutions of ammonium metavanadate to incorporate vanadium as tetrahedral V species which are not removed under treatment with aqueous solution of ammonium acetate. The effects of calcination and rehydration on the environment of the V species have been studied by diffuse reflectance UV-visible and 51V NMR. The reducibility of the V species has been followed by TPR and ESR. The dehydroxylation/rehydroxylation process occurring in the β framework upon dehydration/rehydration has been monitored by 29Si MAS NMR and FT-IR spectroscopy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1027219107921
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