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Effect of oxomolybdate species dispersion on direct methanol oxidation to dimethoxymethane over MoOx/TiO2 catalysts

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The one-step selective oxidation of methanol to dimethoxymethane (DMM)was demonstrated over titania-supported molybdenum oxide catalysts, containing different amounts of molybdenum and prepared using two different
impregnation techniques, namely wet impregnation and incipient wetness impregnation. The corresponding catalysts exhibited both acidic and redox properties, which are necessary for the oxidation of methanol to formaldehyde
with subsequent condensation of the latter with excess methanol to finally yield DMM. The formation of well-dispersed polyoxomolybdate species on the catalyst surface was evidenced using IR-Raman, X-ray diffraction, and nitrogen
physisorption. Varying the amount of these polyoxomolydate species was associated with a modulation of the acidic and redox properties, as shown by NH3-TPD and H2-TPR. With respect to the catalytic performances, the best balance
between acid and redox properties was observed over the samples containing 8 wt.% Mo, whic

Keywords
Catalyst, dimethoxymethane, methanol,molybdenum, oxidation, titania

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Informasi Detail

Judul Seri

Energy Science and Engineering 2015

No. Panggil

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Penerbit

: The Authors., 2015

Deskripsi Fisik

Energy Science and Engineering 2015, 3(2): 115–125

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

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