Method of producing formaldehyde directly from methane
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United States of America Patent
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Sep 25, 2001
Grant Date -
N/A
app pub date -
Sep 9, 1999
filing date -
Mar 26, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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