2005
DOI: 10.1021/cm048079k
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Characterization of Boria−Alumina Mixed Oxides Prepared by a Sol−Gel Method. 2. Characterization of the Calcined Xerogels

Abstract: Sol-gel boria-alumina mixed oxides with a wide range of B/Al atomic compositions have been characterized as dried xerogels in the preceding paper in which a structural model with four domains of composition was proposed. The present paper presents the results obtained on the same series of solids after calcination at 500°C. It was found that the structure of the dried xerogels has a strong influence on the structure of the final oxides. In particular, in the dried xerogel state from B/Al ≈ 0.15, BO 3 chains cr… Show more

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Cited by 26 publications
(32 citation statements)
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References 43 publications
(74 reference statements)
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“…1b) states well corresponded to the schematic structural models shown in Fig. 2, that were derived from the results obtained by previous studies [34][35][36]. Four domains (I, Fig.…”
Section: Catalytic Activity Testssupporting
confidence: 84%
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“…1b) states well corresponded to the schematic structural models shown in Fig. 2, that were derived from the results obtained by previous studies [34][35][36]. Four domains (I, Fig.…”
Section: Catalytic Activity Testssupporting
confidence: 84%
“…2). Note that the B/Al ratio at this local maximum coincided with the ratio that yielded the maximum quantity of the BO 4 species in domain I [35,36]. This result indicates that the surface BO 4 species created in domain I was most likely the cause of the specific acid property yielding the local maximum at B/Al ~ 0.04.…”
Section: Texture Of B-al 2 O 3 Supportsmentioning
confidence: 59%
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