Alkylation of phenol with methanol over molybdenum oxide supported on NaY zeolite

A series of MoO 3/NaY catalysts were prepared with Mo loadings ranging from 2 to 16 wt% and characterized by X-ray diffraction (XRD), BET specific surface area and temperature-programmed desorption (TPD) of ammonia. XRD results revealed that the crystallinity of NaY zeolite was found to decrease wit...

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Bibliographic Details
Published in:Catalysis communications 2003-03, Vol.4 (3), p.112-117
Main Authors: Reddy, Kondakindi Rajender, Ramesh, Kanaparthi, Seela, Kothapalli Kalyana, Rao, Vattikonda Venkat, Chary, Komandur V.R.
Format: Article
Language:English
Subjects:
Alkylation of phenol
MoO 3/NaY
TPD
XRD
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Summary:A series of MoO 3/NaY catalysts were prepared with Mo loadings ranging from 2 to 16 wt% and characterized by X-ray diffraction (XRD), BET specific surface area and temperature-programmed desorption (TPD) of ammonia. XRD results revealed that the crystallinity of NaY zeolite was found to decrease with increase in Mo loading in the catalysts. The total acidity measured by ammonia TPD of the catalysts was found to decrease with increase in Mo loading. The catalytic properties were evaluated for the vapor phase alkylation of phenol with methanol and the results were correlated with results obtained from different characterization techniques. The conversion of phenol decreases as Mo loading increases in the catalyst. With increase in Mo loading on NaY zeolite the selectivity for the formation of C-alkylated compounds was decreased. However, the selectivity towards the formation of O-alkylated products was increased.
ISSN:1566-7367
1873-3905
DOI:10.1016/S1566-7367(03)00006-2