PHOTOCATALYTIC CONVERSION OF METHANE INTO METHANOL OVER THEMoO3(010)SURFACE USING A SIMULATION METHOD

A. Z. Moshfegh () and M. Dashti
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A. Z. Moshfegh: Department of Physics, Sharif University of Technology, P.O. Box 11365-9161, Tehran, Iran
M. Dashti: Department of Physics, Sharif University of Technology, P.O. Box 11365-9161, Tehran, Iran

Surface Review and Letters (SRL), 2004, vol. 11, issue 01, 33-39

Abstract: In this investigation, we have studied the kinetics and mechanism of photocatalytic conversion of methane into methanol reaction over theMoO3(010)surface using a computer simulation method. Methane and oxygen as the reactants are used at room temperature and atmospheric pressure under UV photoirradiation of the catalyst. According to our data analysis, the order of methanol formation reaction with respect toCH4andO2was determined to bel=0.30andm=-1.03, respectively. The highest methanol formation rate (TOF) value was obtained at about 0.05 molecule/s.site in a range of 25–35 W/cm2incident light intensity with energyhν≥Eg. The selectivity ofCH3OHwas increased with increasing partial pressure ofCH4, while the selectivity ofCHOHwas decreased. The effect of light intensity on theCH3OHselectivity was also studied under differentPCH4/PO2ratios, namely 0.9, 1.5 and 2.6. The highestCH3OHselectivity was obtained at 1.5 ratio.

Keywords: Methane; photocatalytic; methanol; MoO3(010); simulation (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1142/S0218625X04005871

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