Abstract
The isomerization of n-hexadecane over Pt–WO3 catalysts supported on TiO2–SiO2 synthesized by glycothermal reaction with various Si/Ti molar ratios was examined. The catalyst performance depended on Si/Ti molar ratio and WO3 loading. The characterization of the catalysts by XRD, XAFS, UV-vis and so on revealed that with increasing the WO3 loading, the structure of surface W species changed from monomeric species to polytungstate species, which is considered to significantly affect the isomerization selectivity of the catalysts.
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