Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 53: Issue 1
On the Activity of ZrO2 Prepared by Different Methods
Authors:
A. Kaddouri Department of Industrial Chemistry and Chemical Engineering Politecnico di Milano P.zza L. da Vinci 32 Milano 20133 P.zza L. da Vinci 32 Milano 20133

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C. Mazzocchia Department of Industrial Chemistry and Chemical Engineering Politecnico di Milano P.zza L. da Vinci 32 Milano 20133 P.zza L. da Vinci 32 Milano 20133

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E. Tempesti Università degli Studi di Brescia Department of Material Science via Valotti 9 Brescia 25123 Italy via Valotti 9 Brescia 25123 Italy

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R. Anouchinsky Department of Industrial Chemistry and Chemical Engineering Politecnico di Milano P.zza L. da Vinci 32 Milano 20133 P.zza L. da Vinci 32 Milano 20133

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Pages:
97–109
Online Publication Date:
03 Nov 2004
Publication Date:
01 May 1998
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010110024557
Keywords:
activation; methanol carbonylation; preparation method; ZrO2 system
Restricted access

Abstract  

Zirconia samples with different structures (monoclinic, tetragonal or a mixture of the two) was prepared by different methodologies, including a novel procedure involving the precipitation of an oxalate precursor and the formation of pure tetragonal ZrO2. The different precursors obtained by varying the preparative procedure (ex oxychloride, ex oxalate, and ex gel) were studied by means of differential thermal analysis and thermogravimetric analysis under air and under N2, while the final oxides were characterized by BET, porosimetry and XRD analysis. The surface acid-base properties of the different oxides were assessed via the catalytic decomposition isopropanol. A prevalence of acid sites found for the ex-oxalate ZrO2 seems to justify the different mechanism of chain growth observed in the carbonylation of methanol with CO/H2 mixtures in the presence of Rh.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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