Catalytic Aerobic Oxidation of Acetaldehyde over Keggin-type Molybdovanadophosphoric Acid/SBA-15 under Ambient Condition
✍ Scribed by Yan Zhou; Bin Yue; Ren-Lie Bao; Shi-Xi Liu; He-Yong He
- Book ID
- 102098981
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 124 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0256-7660
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✦ Synopsis
Keggin-type molybdovanadophosphoric acids (HPA), H 4 PMo 11 VO 40 (1), H 5 PMo 10 V 2 O 40 (2) and H 6 PMo 9 V 3 O 40 (3) were anchored onto γ-aminopropyltriethoxysilane (APTS) aminosilylated silica mesoporous SBA-15 through acid-base neutralization and the resulting HPA/APTS/SBA-15 were characterized by BET, TEM, XRD, ICP, FTIR and 31 P MAS NMR. The characterization results indicate that the Keggin-structure of these HPAs is preserved within the mesoporous silica host. The samples were tested for catalytic aerobic oxidation of acetaldehyde heterogeneously in liquid phase under ambient condition. The electrostatic force between heteropoly acid and amino groups grafted on the silica channel surface leads to strong immobilization of HPA inside SBA-15 which is against the leaching during the reaction. The good catalytic performance and easy recycle of these catalysts make them as potential environmental friendly catalysts for elimination of indoor air pollutants.