Al{sub 2}O{sub 3}-supported mixed-metal oxides for destructive oxidation of (CH{sub 3}){sub 2}S{sub 2}

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie960787v· OSTI ID:529740

Wang, C H; Weng, H S ^[1]

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1. National Cheng Kung Univ., Tainan (Taiwan, Province of China). Dept. of Chemical Engineering

CuO/{gamma}-Al{sub 2}O{sub 3} is confirmed as the most active catalyst among eight {gamma}-Al{sub 2}O{sub 3}-supported single metal oxides for the destructive oxidation of (CH{sub 3}){sub 2}S{sub 2}. To investigate the promoting effect, nine different metal oxides were separately added to CuO/{gamma}-Al{sub 2}O{sub 3}. The experiments reveal MoO{sub 3} as the most effective promoter and the optimal added amount as around 10 wt %. Thermograms of TPR and spectra of XRD, employed to characterize the surface properties of a CuO-MoO{sub 3}/{gamma}-Al{sub 2}O{sub 3} catalyst, verify that the addition of molybdenum oxide inhibits the growth of copper oxide crystal but may cause the formation of Cu{sub 3}Mo{sub 2}O{sub 9} and CuMoO{sub 4} phases. A Cu-O-MoO{sub 3}/{gamma}-Al{sub 2}O{sub 3} catalyst exhibits higher activity and improved resistance to deactivation by sulfur compounds than does a commercial platinum catalyst. Since CH{sub 3}SH may be easily converted into (CH{sub 3}){sub 2}S{sub 2}, the above-mentioned catalysts are decidedly effective in treating waste gas containing CH{sub 3}SH.

• OSTI ID: 529740
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 7 Vol. 36; ISSN 0888-5885; ISSN IECRED
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
CATALYSTS
COPPER OXIDES
DIMETHYL SULFIDE
GASEOUS WASTES
MOLYBDENUM OXIDES
OXIDATION
PHASE STUDIES
PROMOTERS
WASTE PROCESSING