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- W2004201552 abstract "The structure and reactivity of silica-supported 12-tungstophosphoric acid (HPW) with 10–60 wt.% loading prepared by the impregnation method are studied by using chemical analysis, X-ray diffraction (XRD), FT-IR, FT-Raman, TG, 31P MAS NMR, surface area measurement and microreactor tests. It is found that most of HPW in samples is well dispersed on the support, and may mainly exist as small crystalline particles with an average size around 24.3–27.6 nm, calculated by XRD results. Based on various characterization techniques, it may be concluded that silica-supported HPW still keeps its Keggin structure. The effect of different loading on the reactivity of silica-supported HPW without promoter or promoted by Pt/Al2O3 is studied by using isomerization of n-hexane as a probe reaction, and the reactivity is found to be strongly loading related." @default.
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- W2004201552 date "2003-09-01" @default.
- W2004201552 modified "2023-09-24" @default.
- W2004201552 title "Structure and reactivity of silica-supported 12-tungstophosphoric acid" @default.
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- W2004201552 doi "https://doi.org/10.1016/s0926-860x(03)00239-4" @default.
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