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Pieck, C.L.; Val, S. del; Granados, M. Lòpez; Bañares, Miguel Á.; Fierro, J.L.G.

doi:10.1023/a:1024707123452

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…The data in Table , compare the results obtained over Co‐Mn/HPW@TiO 2 catalyst and other catalytic systems such as V 2 O 5 /TiO 2 , V‐Mn‐MCM‐41, V‐Mo‐MCM‐41, V 2 O 5 /TiO 2 –ZrO 2 , Pd/Al 2 O 3 , Sb‐V/ZrO 2 , and V 2 O 5 /ZrO 2 which have been reported for vapor‐phase oxidation of o ‐xylene to phthalic anhydride in a fixed‐bed reactor. Clearly, the catalyst used in the present study might be one of the best catalysts for producing phthalic anhydride.…”

Section: Resultsmentioning

confidence: 74%

Selective vapor‐phase oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H₃PW₁₂O₄₀@TiO₂ using molecular oxygen as a green oxidant

Masoomi

Ghiaci

Rego³

2018

Applied Organom Chemis

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The oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H3PW12O40@TiO2 was investigated. The experimental results demonstrated that the prepared catalyst effectively catalyzed the oxidation of o‐xylene to phthalic anhydride. Also, the synergistic effect between three metals plays vital roles in this reaction. From a green chemistry point of view, this method is environmentally friendly due to carrying out the oxidation in a fixed‐bed reactor under solvent‐free condition and using molecular oxygen as a green and cheap oxidizing agent. The resulting solid catalysts were characterized by FT‐IR, XRD, XPS, ICP‐OES, FESEM, TEM, EDX, DR‐UV spectroscopy, BET and thermogravimetric analysis. The oxidation of o‐xylene yields four products: o‐tolualdehyde, phthaldialdehyde, phthalide and finally phthalic anhydride as the main product. The reaction conditions for oxidation of o‐xylene were optimized by varying the temperature, weight hourly space velocity and oxygen flow rate (contact time). The optimum weight percentage of phosphotungstic acid (HPW) and Co/Mn for phthalic anhydride production were 15 wt % and 2 wt%, respectively. The best Co/Mn ratio was found to be 10/1. Oxygen flow rate was very important on the phthalic anhydride formation. The optimum conditions for oxidation of o‐xylene were T = 370 °C, WHSV = 0.5 h−1 and oxygen flow rate = 10 mL min−1. Under optimized conditions, a maximum of 88.2% conversion and 75.5% selectivity to phthalic anhydride was achieved with the fresh catalyst. Moreover, reusability of the catalyst was studied and catalytic activity remained unchanged after at least five cycles.

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Section: Resultsmentioning

confidence: 74%

Selective vapor‐phase oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H₃PW₁₂O₄₀@TiO₂ using molecular oxygen as a green oxidant

Masoomi

Ghiaci

Rego³

2018

Applied Organom Chemis

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Controlled synthesis and characterization of colloidal SbVO4 nanocrystals by a facile solution-phase method

Chen

Lee

2007

Chemical Physics Letters

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Selective oxidation of o-xylene to phthalic anhydride: from conventional catalysts and technologies toward innovative approaches

et al. 2012

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This paper discusses the gas-phase selective oxidation of o-xylene to phthalic anhydride, one of the chemical processes most studied in the 1980s and 90s. Specifically, it is our aim to examine some aspects which may offer ideas for the development of more innovative reactor technologies or catalyst formulations, and to discuss some peculiarities of this process and of the V/Ti/O catalysts that have been overlooked in the past.

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Cited by 3 publications

References 23 publications

Selective vapor‐phase oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H₃PW₁₂O₄₀@TiO₂ using molecular oxygen as a green oxidant

Selective vapor‐phase oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H₃PW₁₂O₄₀@TiO₂ using molecular oxygen as a green oxidant

Controlled synthesis and characterization of colloidal SbVO4 nanocrystals by a facile solution-phase method

Selective oxidation of o-xylene to phthalic anhydride: from conventional catalysts and technologies toward innovative approaches

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Untitled

Cited by 3 publications

References 23 publications

Selective vapor‐phase oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H3PW12O40@TiO2 using molecular oxygen as a green oxidant

Selective vapor‐phase oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H3PW12O40@TiO2 using molecular oxygen as a green oxidant

Controlled synthesis and characterization of colloidal SbVO4 nanocrystals by a facile solution-phase method

Selective oxidation of o-xylene to phthalic anhydride: from conventional catalysts and technologies toward innovative approaches

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Selective vapor‐phase oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H₃PW₁₂O₄₀@TiO₂ using molecular oxygen as a green oxidant

Selective vapor‐phase oxidation of o‐xylene to phthalic anhydride over Co‐Mn/H₃PW₁₂O₄₀@TiO₂ using molecular oxygen as a green oxidant