The　adsorption　behavior　and　the　photocatalytic　reforming　(PR)　process　of　2-propanol　over　Pt　(1　wt.%)/TiO2　(PT)　photocatalyst　have　been　investigated　by　Fourier　transform　infrared　(FTIR)　spectroscopy.　Both　the　adsorption　complexes　and　the　reforming　intermediates　formed　on　the　PT　and　the　gas-phase　were　determined　and　identified　by　FTIR　spectra.　The　results　indicated　that　the　first　layer　surface　of　the　PT　mainly　consisted　of　chemisorbed　2-propanol　(Ti-OCH(CH3)(2))　through　the　condensation　of　2-propanol　with　surface　Ti-OH　or　dissociative　adsorption　with　undercoordinated　Ti　atoms,　while　the　second　layer　consisted　of　physisorbed　2-propanol　by　interaction　with　the　chemisorbed　one　or　the　formed　H2O　via　hydrogen-bond.　Under　UV　irradiation,　a　rapidly　deprotonation　of　2-propoxide　occurred　by　the　attack　of　holes　(h(+))　and　resulted　in　the　formation　of　acetone,　which　was　then　slowly　oxidized　to　acetate　and　formate　species　by　the　hydroxyl　radicals　((OH)-O-center　dot).　The　carboxylates　finally　decarboxylate　over　the　PT　to　evolve　CO2　and　CH4　via　the　photo-Kolbe　reaction.　According　to　the　results,　a　reforming　mechanism　was　proposed.　The　role　of　the　OH　groups　contained　in　2-propanol　and　its　intermediates　were　found　to　serve　as　anchors　for　their　adsorption　and　to　involve　the　formation　of　hi　transport　ways.　(C)　2011　Elsevier　B.V.　All　rights　reserved.