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AssigneePresident of Shizuoka University
InventorsAkifumi Ueno, Naoto Azuma, Kiyofumi Aoki, Tomomi Sugino
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The present invention provides a silica-supported 12-molybdosilicic acid catalyst comprising a silica carrier and at least 10% by weight, based on the silica amount, of 12-molybdosilicic acid supported on the carrier and a method of producing formaldehyde directly from a mixed gas of methane and oxygen in the presence of the particular catalyst. Formaldehyde can be produced at a high yield in the present invention without requiring a reforming process of methane with water vapor that consumes a large amount of energy. In addition, attentions are also paid to the air pollution and water contamination problems in the present invention.
A method of directly producing formaldehyde from a mixed gas of methane and oxygen in the presence of a catalyst, wherein said catalyst comprises a silica carrier and 12-molybdosilicic acid supported on the silica carrier, and water vapor is supplied to the mixed gas of methane and oxygen such that the water vapor occupies 40 to 80% by volume of the total volume of said mixed gas and water vapor.
Dependencies are inferred from the claim text.