NDLI: Tungstophosphoric and Molybdophosphoric Acids Supported on Zirconia as Esterification Catalysts

Content Provider	Springer Nature Link
Author	Pizzio, Luis Vázquez, Patricia Cáceres, Carmen Blanco, Mirta
Copyright Year	2001
Abstract	The preparation and characterization of supported acid catalysts, based on tungstophosphoric (TPA) or molybdophosphoric (MPA) acids using ZrO2 as support, are presented. ZrO2 was prepared from zirconium oxychloride aqueous solutions by adding ammonium hydroxide solution. Two different techniques were used to obtain the catalysts, equilibrium adsorption and incipient wetness impregnation. The catalyst characterization allowed us to determine the species present on the carrier surface and their acidic properties. The catalytic activity for esterification of acetic acid with isoamyl alcohol of the zirconia-supported TPA catalysts was greater than that corresponding to those based on MPA. Moreover, in the preparative conditions used, the incipient wetness impregnation led to heteropolyacids supported on ZrO2 with better catalytic performance.
Starting Page	233
Ending Page	239
Page Count	7
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	77
Issue Number	4
e-ISSN	1572879X
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2001-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering Pharmacy
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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Tungstophosphoric and Molybdophosphoric Acids Supported on Zirconia as Esterification Catalysts