Application of Synthesized Nano-Crystalline Titanium Silicate-1 in the Oxidation of Thiophene in a Kinetic Approach

CTAB-templated mesoporous TS-1 zeolites as active catalysts in a desulfurization process: the decreased hydrophobicity is more favourable in thiophene oxidation

“…11,[17][18][19] Among them, titanium silicalite-1 (TS-1) zeolites, because of its superior hydrophobicity and intrinsically higher catalytic activity than Ti-Beta, is on the top of a few highly active catalysts in thiophene oxidation. [20][21][22][23][24][25] With the incorporation of Ti into a MFI framework, TS-1 zeolites are crystalline with an extensive microporosity of about 0.55 nm in pore diameter. On the other hand, Ti and Si own the same formal valence which is different from the situation of the substitution of trivalent metals for Si as happens in ZSM-5 zeolites.…”

“…30 Nano-crystalline TS-1 zeolite is effective in thiophene oxidation in spite of its low-yield and complicated separation processes. 24,31 Alternatively, by using a caramel templating process, mesoporous TS-1 zeolites were prepared and displayed higher catalytic activities than conventional TS-1 zeolites both in thiophene and benzothiophene oxidation, but the long reaction time duration of about 6 h to get a final conversion rate of thiophene at 95.34% could not meet the industrialization standard. 12 Also, the recycling performance, which is very important for catalyst applications in the desulfurization process, has not been demonstrated.…”