Properties of [Ti,Al]-beta with different titanium content

Synthesis and activity measurement of the some bifunctional platinum loaded Beta zeolite catalysts for n-heptane hydroisomerization

“…In the next step, 0.33 g of sodium hydroxide and (1.7 g, 3.45 g) of sodium aluminate were dissolved in 5 g of deionized water (Solution B). Solution B was then added dropwise to solution A with continuous stirring until a uniform solution was formed [19]. The homogenized gel was loaded into a PTFE lined autoclave.…”

Titanium species in titanium silicalite TS-1 prepared by hydrothermal method

“…The 212 nm peak and the band centered at 270 nm are very clear if using S-1 as the reference. But if using MgO or BaSO 4 , the signal of other elements in the sample overlaps the peaks involving titanium species The 270-280 nm band in the UV-VIS spectra should be attributed to a kind partially condensed hexacoordinated titanium species according to the work of Blasco et al [15] and Jahn et al [16].…”

Crystallization mechanism of Al–Ti-beta zeolite synthesized from amorphous wetness impregnated xerogels

“…This result suggests that the presence of aluminium is essential in the formation of the initial amorphous gel and its subsequent transformation, which is in agreement with the role of Al species for the nucleation of the BEA structure earlier reported. 19,25 The incorporation of titanium and silicon also increases with the crystallization time, but in both cases it is less effective than that of Al. When 100% crystallinity is reached, these values are around 59 and 67% as regards the initial amounts present in the raw mixture (Fig.…”