TY - JOUR
T1 - The lewis acidity of sulfate-doped ZrO2
T2 - FTIR and microcalorimetric study of CO uptake at ∼ 300 K on low S-loaded specimens
AU - Morterra, C.
AU - Bolis, V.
AU - Cerrato, G.
AU - Magnacca, G.
N1 - Funding Information:
This research was supported by the CNR, Pro-getto Finalizzato Materiali Speciali.
PY - 1994/4/20
Y1 - 1994/4/20
N2 - When loading sulfates on a microcrystalline ZrO2, using H2SO4, the first sulfate groups form on crystal defects, then on regular crystal planes, and eventually complex sulfates (e.g., pyrosulfates) are formed. CO uptake at ∼ 300 K onto SO4/ZrO2 decreases fast with increasing sulfate loading, while the Lewis acidity of the residual sites is variably enhanced by the presence of the various types of sulfates, as shown by the spectral features of the σ-coordinated CO complexes and by the relevant adsorption heats.
AB - When loading sulfates on a microcrystalline ZrO2, using H2SO4, the first sulfate groups form on crystal defects, then on regular crystal planes, and eventually complex sulfates (e.g., pyrosulfates) are formed. CO uptake at ∼ 300 K onto SO4/ZrO2 decreases fast with increasing sulfate loading, while the Lewis acidity of the residual sites is variably enhanced by the presence of the various types of sulfates, as shown by the spectral features of the σ-coordinated CO complexes and by the relevant adsorption heats.
UR - http://www.scopus.com/inward/record.url?scp=0028409406&partnerID=8YFLogxK
U2 - 10.1016/0039-6028(94)91565-2
DO - 10.1016/0039-6028(94)91565-2
M3 - Article
SN - 0039-6028
VL - 307-309
SP - 1206
EP - 1213
JO - Surface Science
JF - Surface Science
IS - PART B
ER -