Effect of aging temperature during refluxing on the textural and surface acidic properties of zirconia catalysts

Hydrous zirconia was synthesized via precipitation method, and effect of aging temperature during refluxing (30–100°C) precursor solution was investigated. We found that the aging temperature influenced on structural and textural properties of the hydrous zirconia, with variations in the textural pr...

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Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2017, 54(0), , pp.137-145
Main Authors: Hong, Eunpyo, Baek, Sung Woo, Shin, Mi, Suh, Young-Woong, Shin, Chae-Ho
Format: Article
Language:English
Subjects:
Acid properties
Aging temperature
Dehydration
Reflux
Zirconia
화학공학
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Summary:Hydrous zirconia was synthesized via precipitation method, and effect of aging temperature during refluxing (30–100°C) precursor solution was investigated. We found that the aging temperature influenced on structural and textural properties of the hydrous zirconia, with variations in the textural properties leading to changes in the surface properties of calcined zirconia, including the acid functionalities. In addition, ZrO2 aged at 100°C exhibited the highest specific surface area and the highest Lewis and Brönsted acidities among the samples. Finally, enhanced catalytic activity was also observed for the ZrO2 samples prepared at higher aging temperatures in the dehydration of iso-propanol.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2017.05.026