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In this work various amount of phosphomolybdic acid (PMo) were immobilized on amine functionalized SBA-15 and used as heterogeneous catalysts in the epimerization of glucose in aqueous solution. 13.3PMo/NH 2 -SBA-15 exhibited the best catalytic performance with a glucose conversion of 34.8% and mannose selectivity of 85.6% within two hours at 120 °C. The activation energy of 80.1 ± 0.1 kJ·mol -  1 was lower than that of 96 kJ·mol -  1 over the homogeneous H 3 PMo 12 O 40 catalyst. The catalytic activities of 13.3PMo/NH 2 -SBA-15 for the transformation of some other aldoses including mannose, arabinose and xylose were also investigated.

H3PMo12O40 Immobilized on Amine Functionalized SBA-15 as a Catalyst for Aldose Epimerization