Relationship between phosphate structure and acid-base properties of phosphate-modified zirconia—Application to alcohol dehydration

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• 作者：Abdelakrim Aboulayt^a ; ^b ; Thomas Onfroy^a ; ^c ; Arnaud Travert^a ; Guillaume Clet^a ; Francoise Maugé ; ^a ; ^{francoise.mauge@ensicaen.fr}
• 关键词：Zirconia ; Phosphate ; Acidity ; Basicity ; Alcohol dehydration
• 刊名：Applied Catalysis A: General
• 出版年：2017
• 出版时间：25 January 2017
• 年：2017
• 卷：530
• 期：Complete
• 页码：193-202
• 全文大小：1800 K
• 卷排序：530

文摘

The rational design of phosphated-zirconia leads to a highly active and selective catalyst for propanol dehydration to propene. At low loading, the phosphate species form a monolayer of pyrophosphate on zirconia, while they develop as 3D blocks of orthophosphate at high loading. The strong Brønsted acidic sites present on orthophosphate supported on zirconia are active for propanol dehydration.