Synthesis and characterization of titanium silicate-1 supported on carbon nanofiber

Mesoporous Titanium-Silicalite Zeolite Containing Organic Templates as a Bifunctional Catalyst for Cycloaddition of CO2 and Epoxides

“…Moreover, the absorption peak at 970 cm –1 is always related to the stretching vibration of Si–O–Ti bonds. It is hard to confirm the quantitative correlations between the intensity of the 970 cm –1 peak and the framework Ti content of the catalyst, but its intensity is often directly proportional to the content of titanium in the framework. − Just as shown in Figure , MTS-1(3)-AT-2 exhibits a little stronger vibration at 970 cm –1 than MTS-1(3)-AS. The result indicates that the sample treatment with acid has a relative larger ratio of framework Ti species, which may be attributed to elimination of some of the amorphous Ti species by the acid washing treatment.…”

Improving the performance of TS-1 catalysts for continuous cyclohexanone ammoximation through controlment of active species distribution

“…The spatial distribution of titanium and silicon in TS-1 particles was analyzed by EDS. 42,43 It was shown that the content of Si was distributed homogeneously in non-modified TS-1 particles. The content of Ti was almost uniformly distributed while there are two high content regions in the outside of the TS-1 particle (Fig.…”

Highly efficient nano-sized TS-1 with micro-/mesoporosity from desilication and recrystallization for the epoxidation of biodiesel with H2O2

“…The latter approach, i.e., the incorporation of intra-crystalline mesoporosity into zeolite crystals, represents an elegant strategy, since in the corresponding catalysts the major advantages of micro-and mesoporous materials are combined. Several routes were reported to incorporate mesoporosity into TS-1, e.g., by using amphiphilic organosilica zeolite precursors, 14,15 by utilizing hard templates [16][17][18][19] or by the top-down technique that involves the removal of silica via desilication by treatment in alkaline solutions. [20][21][22][23] However, mesopore introduction by desilication is poorly controllable with respect to, e.g., size, shape, connectivity and location of the mesopores, and it often leads to a random and disordered mesopore system.…”