Effect of sulfation on the acid-base properties of tetragonal zirconia. A calorimetric and IR spectroscopic study

Vera Bolis; Giuliana Magnacca; Giuseppina Cerrato; Claudio Morterra

doi:10.1023/a:1015332727610

Effect of sulfation on the acid-base properties of tetragonal zirconia. A calorimetric and IR spectroscopic study

Vera Bolis
, Giuliana Magnacca
, Giuseppina Cerrato
, Claudio Morterra

Research output: Contribution to journal › Article › peer-review

Abstract

The RT adsorption of CO₂ was studied in order to compare the surface acid-base properties of yttria-stabilized tetragonal ZrO₂, either plain or variously sulfated. The nature of the species formed upon CO₂ adsorption, as well as their stability upon outgassing, was monitored by IR spectroscopy, whereas the population of the sites and their energy distribution was studied by micro-calorimetry. The effect of sulfation on the basicity of cus Zr⁴⁺/O^2- pairs and on the Lewis acidic strength of cus Zr⁴⁺ cations, as well as the influence of calcination on the amount and nature of surface sulfates were studied and correlated with the catalytic activity of SZ systems.

Original language	English
Pages (from-to)	259-269
Number of pages	11
Journal	Topics in Catalysis
Volume	19
Issue number	3-4
DOIs	https://doi.org/10.1023/a:1015332727610
Publication status	Published - 1 May 2002
Externally published	Yes

Keywords

Basic properties
CO adsorption
Catalysis
IR spectroscopy
Lewis acidity
Microcalorimetry
Sulfated zirconia
Zirconia

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10.1023/a:1015332727610

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title = "Effect of sulfation on the acid-base properties of tetragonal zirconia. A calorimetric and IR spectroscopic study",

abstract = "The RT adsorption of CO2 was studied in order to compare the surface acid-base properties of yttria-stabilized tetragonal ZrO2, either plain or variously sulfated. The nature of the species formed upon CO2 adsorption, as well as their stability upon outgassing, was monitored by IR spectroscopy, whereas the population of the sites and their energy distribution was studied by micro-calorimetry. The effect of sulfation on the basicity of cus Zr4+/O2- pairs and on the Lewis acidic strength of cus Zr4+ cations, as well as the influence of calcination on the amount and nature of surface sulfates were studied and correlated with the catalytic activity of SZ systems.",

keywords = "Basic properties, CO adsorption, Catalysis, IR spectroscopy, Lewis acidity, Microcalorimetry, Sulfated zirconia, Zirconia",

author = "Vera Bolis and Giuliana Magnacca and Giuseppina Cerrato and Claudio Morterra",

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doi = "10.1023/a:1015332727610",

language = "English",

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TY - JOUR

T1 - Effect of sulfation on the acid-base properties of tetragonal zirconia. A calorimetric and IR spectroscopic study

AU - Bolis, Vera

AU - Magnacca, Giuliana

AU - Cerrato, Giuseppina

AU - Morterra, Claudio

PY - 2002/5/1

Y1 - 2002/5/1

N2 - The RT adsorption of CO2 was studied in order to compare the surface acid-base properties of yttria-stabilized tetragonal ZrO2, either plain or variously sulfated. The nature of the species formed upon CO2 adsorption, as well as their stability upon outgassing, was monitored by IR spectroscopy, whereas the population of the sites and their energy distribution was studied by micro-calorimetry. The effect of sulfation on the basicity of cus Zr4+/O2- pairs and on the Lewis acidic strength of cus Zr4+ cations, as well as the influence of calcination on the amount and nature of surface sulfates were studied and correlated with the catalytic activity of SZ systems.

AB - The RT adsorption of CO2 was studied in order to compare the surface acid-base properties of yttria-stabilized tetragonal ZrO2, either plain or variously sulfated. The nature of the species formed upon CO2 adsorption, as well as their stability upon outgassing, was monitored by IR spectroscopy, whereas the population of the sites and their energy distribution was studied by micro-calorimetry. The effect of sulfation on the basicity of cus Zr4+/O2- pairs and on the Lewis acidic strength of cus Zr4+ cations, as well as the influence of calcination on the amount and nature of surface sulfates were studied and correlated with the catalytic activity of SZ systems.

KW - Basic properties

KW - CO adsorption

KW - Catalysis

KW - IR spectroscopy

KW - Lewis acidity

KW - Microcalorimetry

KW - Sulfated zirconia

KW - Zirconia

UR - https://www.scopus.com/pages/publications/1842491900

U2 - 10.1023/a:1015332727610

DO - 10.1023/a:1015332727610

M3 - Article

SN - 1022-5528

VL - 19

SP - 259

EP - 269

JO - Topics in Catalysis

JF - Topics in Catalysis

IS - 3-4

ER -

Effect of sulfation on the acid-base properties of tetragonal zirconia. A calorimetric and IR spectroscopic study

Abstract

Keywords

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