Method for producing formic acid formiates

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 51/09 (2006.01) C07C 51/41 (2006.01) C07C 53/02 (2006.01) C07C 53/06 (2006.01)

Patent

CA 2526912

The invention relates to a method for producing formic acid formiates consisting in supplying a formic acid-containing fluid flow (I) and a metal formiate-containing fluid flow (II) and in mixing the fluid flow (I) and the fluid flow (II) in order to obtain corresponding formic acid formiate. Said invention is characterised in that a fluid flow (III) containing metallic formiate components, metal methanolate, methanol and formic acid methylester (MeFo) at a ratio > 0.1 mass % is inserted into the fluid flow (I) or the precursor thereof, into the fluid flow (II) or the precursor thereof or into a mixture which is formed by the fluid flows (I) and (II). Said fluid flow (III) is obtained by a method for producing MeFo by carbonylating methanol in a reactor at a pressure up to 50 MPa absolutes in the presence of metal methanolate which used as homogenous catalyst.

L'invention concerne un procédé de production de formiates d'acide formique, consistant : à fournir un courant fluidique (I) contenant de l'acide formique, ainsi qu'un courant fluidique (II) contenant un formiate métallique, et ; à mélanger le courant fluidique (I) avec le courant fluidique (II), pour obtenir le formiate d'acide formique correspondant. Cette invention est caractérisée en ce qu'un courant fluidique (III) contenant les composants formiate métallique, méthalonate métallique, méthanol et méthylester d'acide formique (MeFo), dans des proportions respectivement > 0,1 % en poids, est ajouté au courant fluidique (I) ou à un précurseur de celui-ci, au courant fluidique (II) ou à un précureur de celui-ci ou au mélange formé par les courants fluidiques (I) et (II). Ledit courant fluidique (III) résulte d'un procédé de production de MeFo, par carbonylation de méthanol dans un réacteur, à une pression pouvant atteindre 50 MPa absolus, en présence d'un méthalonate métallique qui sert de catalyseur homogène.

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