Mesoporous iron–titania catalyst for cyclohexane oxidation

Perkas, Nina; Wang, Yanqin; Koltypin, Yuri; Gedanken, Aharon; Chandrasekaran, Srinivasan

doi:10.1039/b100910a

Cited by 87 publications

(54 citation statements)

References 15 publications

(8 reference statements)

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“…Gedanken et al [168] have studied the oxidation of cyclohexane to cyclohexanol and cyclohexanone over a mesoporous Fe 2 O 3 -TiO 2 catalyst. The mesoporous catalysts displayed about a 5 % higher cyclohexane conversion under the same conditions as compared to catalysts in which Fe 2 O 3 was incorporated into nonporous TiO 2 .…”

Section: Mesoporous Metal Oxidesmentioning

confidence: 99%

“…[159] More recently, Ogawa et al [160] have reported the use of Al-containing mesoporous silica films as nanoreactors for organic photochemical reactions. An adsorbed azobenzene derivative incorporated in cyclohexane oxidation cyclohexanol, cyclo-T = 343 K conversion = 25.8 % [168] hexanone, isobutyralp = 1 atm selectivity to cyclohexadehyde, acetic acid time = 15-17 h nol and cyclohexanone = 90 % VO x -TiO 2 propene oxidation CO + CO 2 T = 500 K activity (min -1 ) [169] p O2 = 6.6 kPa CO = 0.091 p C3H6 = 2.4 kPa CO 2 = 0.279 select. to CO 2 = 75 % VPO n-butane oxidation maleic anhydride T = 673 K n-butane conversion = [121] 1.7 % n-butane in air 10 % space velocity F/V = 55 min www.eurjic.org the film exhibited photochemical isomerization upon UV/ Vis irradiation at temperatures as low as 80-300 K. However, no comparison with conventional nonmesoporous systems was conducted.…”

Section: Mesoporous Metal Oxidesmentioning

confidence: 99%

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Ordered Meso‐ and Macroporous Binary and Mixed Metal Oxides

2004

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A critical review is provided of the principles guiding the synthesis of meso-and macroporous metal oxides on multiple length scales in the presence of surfactant mesophases and colloidal arrays of monodisperse spheres, and correlations between the synthesis conditions and the properties of the resulting meso-and macroporous oxides, such as thermal stability, pore structure, elemental and nanophase compositions of the inorganic wall, etc. The thermal stability of mesostructured metal-oxide phases, in particular, is discussed in terms of charge-matching at the organic-inorganic interface, the strength of interactions between inorganic species and surfactant headgroups, the flexibility of the M-O-M bond angles in the constituent metal oxides, the Tammann temperature of the metal oxide, and the occurrence of redox reactions in the metal-oxide wall. The ordered meso-and

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Section: Mesoporous Metal Oxidesmentioning

confidence: 99%

Section: Mesoporous Metal Oxidesmentioning

confidence: 99%

Ordered Meso‐ and Macroporous Binary and Mixed Metal Oxides

2004

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“…Maleic anhydride and phthalic anhydride are important monomers in polymer chemistry. The efforts made on the selective oxidation of cyclohexane were for the production of cyclohexanol, cyclohexanone, and adipic acid [24][25][26]. Currently, the catalytic process of cyclohexane oxidation has not been commercialised because the selectivity to the desired products are not high.…”

Section: Introductionmentioning

confidence: 99%

The partial oxidation of C4–C6 alkanes to maleic anhydride, 2-methyl maleic anhydride, and acetic acid over MoVO catalysts

Chen

Tang

et al. 2006

Catal Lett

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Alkanes such as iso-butane, n-pentane, and cyclohexane have been converted effectively to maleic anhydride, 2-methyl maleic anhydride, and acetic acid over MoVO catalysts below 330°C. In order to explore the possible reaction pathways, the oxidation of iso-butene, cyclohexene, 2-methyl-1-propanol, tert-butanol, and 2-methylacrylic acid were examined over the catalysts. In isobutene oxidation, acetic acid and 2-methyl maleic anhydride were detected but not maleic anhydride. In cyclohexene oxidation, benzene and phenol were detected as major products but it was not the case in cyclohexane oxidation. The results of our investigation indicate that the oxidation pathway of iso-butane is different from that of iso-butene, 2-methyl-1-propanol, tertbutanol, and 2-methylacrylic acid, whereas the oxidation pathway of cyclohexane is different from that of cyclohexene.

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“…Perkas et al conducted a cyclohexane oxidation process by using the nanoparticles received by sonochemical deposition of metal oxides onto a mesoporous carrier. They demonstrated that the oxidation of cyclohexane can be effectively performed on the surface of iron oxide nanoparticles embedded in mesoporous titanium oxide [9].…”

Section: Introductionmentioning

confidence: 99%

Microwave and UV Assisted Methods for Obtaining Novel Composites Based on Fe2O3 with Embedded Gold Nanoparticles

2017

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Metallic nanoparticles embedded into the structure of metal oxides may play a role of catalytic substances. Such composites are mostly applied in oxidation reactions. The paper presents two one-step-methods for obtaining nanocomposites of gold embedded in the structure of iron oxide matrices (nanoAu/Fe 2 O 3 ). Gold nanoparticles were formed in situ in the process of iron hydroxide dehydration. Thanks to the use of tannic acid it was possible to effectively reduce gold ions and stabilize the forming metal nanoparticles. The composites were prepared in the fields of microwave, ultraviolet radiation. The physicochemical properties of products were determined by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray analysis and high-resolution transmission electron microscopy technique with EDS and elemental mapping mode. Also, the catalytic activity of the nanocomposites obtained was evaluated based on the process of methyl orange degradation. It was observed that products obtained according to the microwave radiation method are characterized by improved applying properties.

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Mesoporous iron–titania catalyst for cyclohexane oxidation

Cited by 87 publications

References 15 publications

Ordered Meso‐ and Macroporous Binary and Mixed Metal Oxides

Ordered Meso‐ and Macroporous Binary and Mixed Metal Oxides

The partial oxidation of C4–C6 alkanes to maleic anhydride, 2-methyl maleic anhydride, and acetic acid over MoVO catalysts

Microwave and UV Assisted Methods for Obtaining Novel Composites Based on Fe2O3 with Embedded Gold Nanoparticles

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