METHOD FOR PRODUCING ACRYLIC ACID FROM ETHANOL AND FORMALDEHYDE

METHOD FOR PRODUCING ACRYLIC ACID FROM ETHANOL AND FORMALDEHYDE

A process for preparing acrylic acid from ethanol and formaldehyde, in which, in a reaction zone A, the ethanol is partially oxidized to acetic acid in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and a formaldehyde source are used to obtain a reaction gas input...

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Hauptverfasser: ALTWASSER STEFAN, HUTTEN FRANK, HERZOG STEFANIE, SCHAFER ALEXANDER, OTTENBACHER MARKUS, WENTINK ANNEBART ENGBERT
Format: Patent
Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator ALTWASSER STEFAN
HUTTEN FRANK
HERZOG STEFANIE
SCHAFER ALEXANDER
OTTENBACHER MARKUS
WENTINK ANNEBART ENGBERT
description A process for preparing acrylic acid from ethanol and formaldehyde, in which, in a reaction zone A, the ethanol is partially oxidized to acetic acid in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and a formaldehyde source are used to obtain a reaction gas input mixture B which comprises acetic acid and formaldehyde and has the acetic acid in excess over the formaldehyde, and the formaldehyde present in reaction gas input mixture B is aldol-condensed with acetic acid present in reaction gas input mixture B to acrylic acid under heterogeneous catalysis in a reaction zone B, and unconverted acetic acid still present along-side the acrylic acid target product in the product gas mixture B obtained is removed therefrom, and the acetic acid removed is recycled into the production of reaction gas input mixture B.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title METHOD FOR PRODUCING ACRYLIC ACID FROM ETHANOL AND FORMALDEHYDE
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