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Liquid phase reactions catalyzed by Fe- and Mn-sulphated ZrO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
42962 45949 2009 8 PDF Available
Title
Liquid phase reactions catalyzed by Fe- and Mn-sulphated ZrO2
Abstract

Fe- and Mn-promoted ZrO2–SO4 (ZS) powders were prepared both by a single step sol–gel reaction and by impregnation of the zirconia hydrous precursor. The samples were calcined at 890 K and characterized for the structural (XRD) and morphological features (BET method). Surface functionalities were investigated by XPS, 1H MAS NMR and FTIR analyses. The liquid medium catalytic activity was tested with respect to both the esterification of benzoic acid to methylbenzoate and the benzylation of toluene. The acidity features appeared not to be significantly different among the various samples while all surface characterizations showed a lower affinity to retain water by the metal-promoted samples with respect to ZS, the more so in the case of iron-containing samples. The presence of Mn reduced the surface area and depressed the catalytic activity. Iron-doped catalysts appeared, instead, to be more efficient than ZS especially for the benzylation of toluene.

Graphical abstractFe- and Mn-doped ZrO2–SO4 (ZS) powders were prepared both by a sol–gel reaction and by impregnation of the zirconia hydrous precursor. Surface functionalities were investigated by XPS, 1H MAS NMR and FTIR analyses. The liquid medium catalytic activity was tested with respect to both the esterification of benzoic acid to methylbenzoate and the benzylation of toluene.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Metal-promoted sulphated zirconia; Liquid media catalyst; Surface functionalities; Structural characterizations; 1H MAS NMR
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Liquid phase reactions catalyzed by Fe- and Mn-sulphated ZrO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 360, Issue 2, 1 June 2009, Pages 137–144
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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