| 摘要 |
<p>Processes are provided herein for the catalytic production of formaldehyde. In particular, the inventive process for the production of formaldehyde from methanol includes the passage, at an elevated temperature, of methanol through a specifically recited catalyst, e.g., by passing a gas stream containing methanol and oxygen or gaseous methanol and oxygen through the catalyst under specifically recited conditions of temperature, pressure and space velocity. The catalyst comprises a monolithic metallic or ceramic support, e.g., corrugated metal foil or corrugated and plain sheets of metallic foil provided with channels for passage therethrough of the gas stream. The channel wall surfaces are coated or impregnated with one or more of copper, silver, gold and iron. It is believed that one factor contributing to the success of the process of this invention is that the extended metal substrate oxidizes in such a way that the first layer of oxide film does not tend to grow over or cover the outermost layer of the catalyst metal, e.g., iron, copper, silver or gold.</p> |
