Dual Catalyst Bed Reactor for Methanol Oxidation (Technology #: 091301-03)

Description:

A process and apparatus for oxidizing methanol in a gas stream into formaldehyde in a fixed bed reactor. The process first introduces a gas stream into a fixed bed reactor. The fixed bed reactor contains a catalyst bed having a depth, a width, a length, an inlet, an upstream region, a downstream region and an outlet. Preferably, the inlet, the upstream region, the downstream region and the outlet are provided in the order stated. A vanadia-titania catalyst is provided in the upstream region and a molybdena-titania catalyst is provided in the downstream region. The vanadia-titania catalyst in the upstream region is substantially free of MoO.sub.3 and initially (i.e., during oxidation some V.sub.2 O.sub.5 may sublime and migrate to the downstream region) the molybdena-titania catalyst in the downstream region is substantially free of V.sub.2 O.sub.5. Next, the gas stream is contacted with the vanadia-titania catalyst under oxidizing conditions. Then, the gas stream is contacted with a molybdena-titania catalyst under oxidizing conditions which provides a product stream containing formaldehyde at the desired conversion and formaldehyde selectivity.

STATUS OF INTELLECTUAL PROPERTY

This technology is protected under the US Patents 6,559,345 and 6,875,724


Isreal Wach's Lehigh Page

Patent Information:
For Information, Contact:
Yatin Karpe
Associate Director
Lehigh University
yak206@lehigh.edu
Inventors:
Israel Wachs
Keywords:
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