New Ti-SBA mesoporous solids functionnalized under gas phase conditions: characterisation and application to selective oxidation of alkenes

Chiker, F.; Nogier, J.P.; Launay, Franck; Bonardet, J.L.

doi:10.1016/s0926-860x(02)00553-7

Cited by 69 publications

(46 citation statements)

References 20 publications

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“…The selectivity for epoxide formation is near 100% but the oxidant is consumed more efficiently (90-96%). These results confirm our first observations (Chiker et al 2003). The Diffuse Reflectance Ultra-violet-Visible (DRUV-Vis) spectra of the Ti-SBA(65)-573 catalysts before and after reaction are practically identical, showing that the catalyst is little altered by the reaction when the oxidant is tertbutyl hydroperoxide.…”

Section: Oxidation By Tert-butyl Hydroperoxide (Tbhp)supporting

confidence: 89%

Green epoxidation on Ti-mesoporous catalysts

Chiker¹,

Launay²,

Nogier³

et al. 2003

Environmental Chemistry Letters

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New mesoporous catalysts with a mean pore size of 65 have been synthesised by grafting titanium on a mesoporous silica SBA15 (Santa BArbara) by means of titanium tetrachloride in the gas phase. These catalysts have been tested for the green epoxidation of cyclooctene, cyclohexene, (R)-limonene and a-pinene by hydrogen peroxide, tert-butyl hydroperoxide or cumyl hydroperoxide. The selectivity is 100% and epoxide yields can reach almost 100% in the case of organic hydroperoxides without any leaching of titanium species. Here we show that cyclohexene epoxidation could be used as the first step of a greener synthesis of adipic acid.

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Section: Oxidation By Tert-butyl Hydroperoxide (Tbhp)supporting

confidence: 89%

Green epoxidation on Ti-mesoporous catalysts

Chiker¹,

Launay²,

Nogier³

et al. 2003

Environmental Chemistry Letters

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“…3 represents the wide angle X-ray powder diffraction patterns of synthesized TiO 2 /Al-SBA-15 samples. Pure Al-SBA-15 exhibits a single broad peak, characteristic of amorphous silica [26]. Samples TiO 2 -Al-SBA-15 (2, 313), TiO 2 -Al-SBA-15 (4, 313), TiO 2 -Al-SBA-15 (8,313), and TiO 2 -Al-SBA-15 (4, 323) shows evident peaks centered at 25.31 (101), 37.81 (004), assigning to characteristic diffraction of anatase TiO 2 phase [27], which are not observed in other samples.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of TiO2 nanoparticles on mesoporous aluminosilicate Al-SBA-15 in supercritical CO2 for photocatalytic decolorization of methylene blue

Chang

Wang

Xie

et al. 2013

Ceramics International

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“…Thus, Chiker et al [140,141] prepared mesoporous silica SBA-15 samples functionalized with titanium as catalysts for the epoxidation of pinene with TBHP as oxidant on refluxing from acetonitrile. For instance, using a Ti-SBA15 with pore diameter of 61Å and a Si/Ti ratio of 17.8, the epoxide was produced with 100% selectivity at 91% conversion, with an efficiency of the oxidant of 93%.…”

Section: Epoxidation Reactionsmentioning

confidence: 99%