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Abstract

A series of molybdena based catalysts have been tested for the selective oxidation of methane at ambient pressure, with N-20 as oxidant. Formaldehyde was produced over molybdena on silica and sodium treated silica but use of other supports, such as TiO-2 or MgO resulted in total oxidation products only being produced. An optimum molybdena loading was observed with the silica support. Pure MoO-3 and copper and phosphorus doped unsupported molybdena also exhibited selectivity towards formaldehyde. Optimum selectivity was observed at low contact times and temperatures below 500circC. A series of radical reactions is proposed to explain the selectivity towards formaldehyde and the absence of methanol in the selective oxidation products.

Additional information

Authors: MACGIOLLA CODA E, DEPARTMENT OF MATERIALS ENGINEERING AND INDUSTRIAL CHEMISTRY, NIHE, LIMERICK (IRELAND);MULHALL E, DEPARTMENT OF MATERIALS ENGINEERING AND INDUSTRIAL CHEMISTRY, NIHE, LIMERICK (IRELAND);VAN HOEK R, DEPARTMENT OF MATERIALS ENGINEERING AND INDUSTRIAL CHEMISTRY, NIHE, LIMERICK (IRELAND);HODNETT B K DEPARTMENT OF MATERIALS ENGINEERING AND INDUSTRIAL CHEMISTRY, NIHE, LIMERICK (IRELAND), DEPARTMENT OF MATERIALS ENGINEERING AND INDUSTRIAL CHEMISTRY, NIHE, LIMERICK (IRELAND)
Bibliographic Reference: EUROPEAN WORKSHOP ON CATALYTIC METHANE CONVERSION, BOCHUM (GERMANY), MAY, 2-3, 1988, AVAILABILITY: CEC-LUXEMBOURG, DG-XIII-C-3, POB 1907, MENTIONING PAPER EN 34034 ORA
Availability: Can be ordered online
Record Number: 1989126102300 / Last updated on: 1989-06-01
Category: PUBLICATION
Available languages: en