Selective oxidation of methane to benzene over molybdenum catalysts

Conference · Tue Oct 01 04:00:00 EDT 1996

OSTI ID:370199

Solymosi, F; Szoeke, A ^[1]

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1. Jozsef Univ., Szeged (Hungary)

Recent studies have demonstrated that methane can be selectively converted into benzene over MoO{sub 3} supported by ZSM-5 or by SiO{sub 2}. The primary aim of this work is to elucidate the active surface species involved in the CH{sub 4} conversion, and to establish the possible mechanism of the aromatization of CH{sub 4}. This involves the study of the reactions of the primary products (such as CH{sub 3}, CH{sub 2}, C{sub 2}H{sub 6} and C{sub 2}H{sub 4}) of C{sub 2}H{sub 4} conversion on supported MoO{sub 3}. Experiments were extended to K{sub 2}MoO{sub 4} sample too, the properties of which is basically different from that of MoO{sub 3}-based catalyst. The reaction of methane on K{sub 2}MoO{sub 4} was observed only above 923 K. In the initial phase of the interaction the complete oxidation of methane was the dominant process. A dramatic change in the selectivity of the catalyst sample was experienced after a partial reduction of molybdate. In this case the selectivity of benzene formation was 35-40%. When the molybdate was deposited as silica support, no aromatic compounds were detected in the products.

• OSTI ID: 370199
• Report Number(s): CONF-960376--
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
36 MATERIALS SCIENCE
AROMATIZATION
BENZENE
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL FEEDSTOCKS
METHANE
MOLYBDENUM OXIDES
OXIDATION
SILICA
SURFACES