01718nas a2200169   4500008004100000022001400041245010300055210006900158260011000227300001600337490000600353520100600359100001401365700001801379700002301397856012801420       2015                        eng d  a2046-206900aPreparation of mesoporous titanosilicate with isolated Ti active centers for cyclohexene oxidation0 aPreparation of mesoporous titanosilicate with isolated Ti active  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT  a92371-923770 v53 a<p>We report the preparation of mesoporous titanosilicate with active Ti centres using CTAB as the structure directing agent and ethylenediamine as the complexing agent (TSC-ED). The finalmaterial contained isolated Ti4+ centres substituting Si4+ in the mesoporous silica framework. The crucial role played by ethylenediamine in complexing with Ti4+ during the sol-gel process and preventing the phase segregation of TiO2 was studied systematically. The textural parameters, structural order, morphology, nature and co-ordination of Ti species were analyzed using various techniques such as X-ray diffraction (XRD), UV-vis diffused reflectance spectroscopy (UV-vis DRS), UV resonance Raman spectroscopy, Fourier transformed Infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), transition electron microscopy (TEM), and X-ray photoelectron spectroscopy. Finally, the catalysts were tested for catalytic activity in the oxidation of cyclohexene using various oxidants.</p>1 aGupta, S.1 aVinod, C., P.1 aJagadeesan, Dinesh  uhttps://library.ncl.res.in/content/preparation-mesoporous-titanosilicate-isolated-ti-active-centers-cyclohexene-oxidation-0