Process for the preparation of trioxane
AssigneeHoechst Aktiengesellschaft
InventorsGerhard Emig, Benno Kruger, Frank Kern, Michael Hoffmockel, Karl-Friedrich Muck, Gunter Sextro
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Abstract
In a process for the preparation of trioxane from formaldehyde in the gas phase in the presence of a catalyst, the catalyst employed is 11-molybdo-1-vanadophosphoric acid, H.sub.4 PVMo.sub.11 O.sub.40 .multidot.n H.sub.2 O (n=0-32). Advantages of this process are, inter alia, high space-time yields and the suppression of byproducts.
Claims15
A process for the preparation of trioxane, comprising:
- bringing formaldehyde in the gas phase into contact with a catalyst comprising 11-molybdo-1-vanadophosphoric acid, H.sub.4 PVMo.sub.11 O.sub.40 .multidot.n H.sub.2 O, where n is a number from 0 to 32.
An apparatus for the production of trioxane from formaldehyde comprising a reaction zone having an inlet and an outlet and containing a catalyst for the conversion of formaldehyde to trioxane, said outlet being in communication with an absorption zone, and said catalyst comprising the compound 11-molybdo-1-vanadophosphoric acid, H.sub.4 PVMo.sub.11 O.sub.40 .multidot.n H.sub.2 O, where n is a number from 0 to 32.
Dependencies are inferred from the claim text.