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Catalytic Aerobic Oxidation of Acetaldehyde over Keggin‐type Molybdovanadophosphoric Acid/SBA‐15 under Ambient Condition
Author(s) -
Zhou Yan,
Yue Bin,
Bao RenLie,
Liu ShiXi,
He HeYong
Publication year - 2006
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200690187
Subject(s) - chemistry , catalysis , acetaldehyde , mesoporous material , leaching (pedology) , mesoporous silica , fourier transform infrared spectroscopy , keggin structure , nuclear chemistry , inorganic chemistry , chemical engineering , organic chemistry , ethanol , soil science , engineering , soil water , environmental science
Abstract 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.