Process for preparing carboxylic acids and derivatives thereof

Details Process for preparing carboxylic acids and derivatives thereof Process for preparing carboxylic acids and derivatives thereof

C - Chemistry, Metallurgy

07

C

C07C 51/12 (2006.01) C07C 53/08 (2006.01) C07C 67/36 (2006.01) C07C 67/37 (2006.01) C07C 69/14 (2006.01)

Patent

CA 2562392

Preparation of an aliphatic carboxylic acid having (n+l) carbon atoms, where n is an integer up to 6, and/or an ester or anhydride thereof may be achieved by contacting an aliphatic alcohol having n carbon atoms and/or a reactive derivative thereof with carbon monoxide substantially in the absence of the halogens or derivatives thereof at a temperature in the range 250-600~C and at a pressure in the range 10 to 200 bars, in the presence of a catalyst consisting essentially of a mordenite which has, as framework elements, silicon, aluminium and one or more of gallium, boron and iron, and which has been ion-exchanged or otherwise loaded with copper, nickel, iridium, rhodium or cobalt.

Méthode de préparation d'un acide carboxylique aliphatique possédant (n+1) atome de carbone, dans laquelle n est un entier de maximum 6, et/ou un de ses esters ou anhydrides, ce qui consiste à mettre en contact un alcool aliphatique possédant n atome de carbone et/ou un de ses dérivés réactifs avec monoxyde de carbone pratiquement en l'absence des halogènes ou de leurs dérivés à une température située dans une plage de 250-600 ·C et à une pression entre 10 et 200 bars, en présence d'un catalyseur constitué essentiellement par une mordénite possédant, en tant qu'éléments structuraux, silicium, aluminium et un ou plusieurs parmi gallium, bore et fer, et qui a été soumise à un échange d'ions ou sinon chargée de cuivre, nickel, iridium, rhodium ou cobalt.

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