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- W2367888947 abstract "A conventional acidification method incorporated with an ether extraction technique was used to prepare H-3PMo-{12}O-{40} with Keggin structure. Silica supported heteropoly acids(HPA) were prepared at different calcination temperatures. The unsupported and supported HPA were characterized by TG, DTA, IR, XPS and NH-3|TPD techniques. The influence of SiO-2 on HPA acidity and the interaction between SiO-2 and HPA were investigated. It was found that the support SiO-2 improves the thermal stability of HPA, and the increase of calcination temperature obviously lowers the HPA acidity. An interaction modle between SiO-2 and HPA is proposed." @default.
- W2367888947 created "2016-06-24" @default.
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- W2367888947 date "2002-01-01" @default.
- W2367888947 modified "2023-09-25" @default.
- W2367888947 title "Investigation of Interaction between SiO_2 and Keggin Heteropolyacids" @default.
- W2367888947 hasPublicationYear "2002" @default.
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