Title:
METAL MOLYBDATE/IRON-MOLYBDATE DUAL CATALYST BED SYSTEM AND PROCESS USING THE SAME FOR METHANOL OXIDATION TO FORMALDEHYDE
Document Type and Number:
WIPO Patent Application WO2002022539
Kind Code:
A3
Abstract:
A process and fixed bed reactor for oxidizing methanol in a reactant gas feed stream to formaldehyde. The process comprises introducing the reactant gas feed stream into an upstream region containing a first metal molybdate catalyst (substantially free of a volatile Mo/MoO3 species) under oxidizing conditions to form a partially oxidized reactant gas feed stream which is then introduced under oxidizing conditions into a downstream region containing a second metal molybdate catalyst to further oxidize any residual methanol contained therein. A fixed bed reactor comprising an upstream region and a downstream region containing the aforementioned first and second metal molybdate catalysts, respectively, is utilized to implement the inventive process to yield a product gas stream containing formaldehyde preferably at a conversion of 85 % or more and a selectivity of 90 % or more.
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Inventors:
WACHS ISRAEL E
BRIAND LAURA E
BRIAND LAURA E
Application Number:
PCT/US2001/028341
Publication Date:
November 06, 2003
Filing Date:
September 13, 2001
Export Citation:
Assignee:
UNIV LEHIGH (US)
International Classes:
C07C45/38; C07C47/052; (IPC1-7): C07C45/38; C07C47/04; C07C47/052
Domestic Patent References:
| WO1999052629A1 | 1999-10-21 | |||
| WO1999052630A1 | 1999-10-21 |
Foreign References:
| GB1463174A | 1977-02-02 | |||
| EP0199359A2 | 1986-10-29 |
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