Mesoporous Titania as a Support of Gallium-Based Catalysts for Enhanced Ethane Dehydrogenation Performance

Propylene Production via Oxidative Dehydrogenation of Propane with Carbon Dioxide over Composite MxOy-TiO2 Catalysts

“…Modification of TiO 2 support with Ga 2 O 3 led to significant variations of the H 2 -TPR profile which consisted of two intense peaks at 338 °C and 598 °C. Similar peaks observed over Ga 2 O 3 based catalysts were previously attributed to the reduction of well dispersed Ga species and bulk or larger Ga 2 O 3 particles, respectively [ 97 , 98 , 99 ]. It should be noted that the peaks discussed above due to the reduction of the TiO 2 surface may be overlapped by the high intensity peaks of Ga 2 O 3 reduction.…”

“…An additional peak was also discerned over Cr 2 O 3 -TiO 2 (Figure 7b) at ~365 • C (overlapped with the peak centered at 343 • C) as well as a broad feature above 400 • C which, as discussed above, may be related to the reduction of surface TiO 2 . Modification of TiO 2 support with Ga 2 O 3 led to significant variations of the H 2 -TPR profile which consisted of two intense peaks at 338 • C and 598 • C. Similar peaks observed over Ga 2 O 3 based catalysts were previously attributed to the reduction of well dispersed Ga species and bulk or larger Ga 2 O 3 particles, respectively [97][98][99]. It should be noted that the peaks discussed above due to the reduction of the TiO 2 surface may be overlapped by the high intensity peaks of Ga 2 O 3 reduction.…”

Spectroscopic Insights into the Role of Co2 on the Nature of Cr Species in a Crox/Al2o3 Catalysts During Ethane Dehydrogenation with Co2

“…These results are quite unexpected and actually differ from the ones found in the literature, in which the presence of CO 2 always enhances the catalytic activity in ethane ODH reactions with chromium oxides [21,24,26,27,30,35,[44][45][46]. The same can be said when other oxides are used [47][48][49]. The conversion curves on Fig.…”

Achieving Complete Hydrogen Evolution from N2H4BH3 over Mesoporous TiO2 Immobilized NiPt Alloy Nanoparticles

“…Compared with bulk TiO 2 , the regular mesoporous channel of mesoporous TiO 2 not only increases the density of active sites, but also promotes the diffusion of reactants and products. [42] As far as we know, to fabricate NiPt alloy, behaving synergy effect, grown on mesoporous TiO 2 (meso-TiO 2 ) for facilitating the decomposition of HB to generate hydrogen has been scarcely mentioned. [43] Based on the above considerations, we design herein the construction of a series of NiPt uniform loaded meso-TiO 2 through a facile one-step co-reduction synthetic approach, further exploited it as an effective catalyst for remarkably catalyzing the hydrogen release from HB at 323 K. Under optimized conditions, the as-resulting Ni 0.5 Pt 0.5 /meso-TiO 2 exhibited favorable heightened catalytic capability with outstanding turnover frequency value of 77.06 mol H2 ⋅ mol metal ⋅ min À 1 , 100 % H 2 selectivity, as well as robust stability for hydrogen production from HB in an alkaline solution.…”