Production of organic carboxylic acid esters

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 67/08 (2006.01) C07C 67/03 (2006.01) C07C 69/14 (2006.01) C07C 69/24 (2006.01) C07C 69/54 (2006.01)

Patent

CA 2274751

A process for producing a carboxylic acid ester comprises reacting a first reactant comprising at least one carboxylic acid with a second reactant comprising at least one alcohol. The carboxylic acid and/or the alcohol are Fischer-Tropsch derived. The reaction is effected at elevated temperature and at a pressure such that the reactants are in a vapour phase. The reaction is further effected in the presence of a temperature stable solid acid catalyst. The application also discloses a process for transesterifying an ester, which process comprises reacting a first reactant comprising an ester with a second reactant comprising a Fischer-Tropsch derived alcohol, at elevated temperature and at a pressure such that the reactants are in a vapour phase, the reaction being effected in the presence of a temperature stable solid acid catalyst.

Ce procédé pour produire des esters d'acides carboxyliques consiste à faire réagir un premier réactif comprenant au moins un acide carboxylique avec un second réactif comprenant au moins un alcool. L'acide carboxylique et/ou l'alcool proviennent d'une réaction de Fischer-Tropsch. La réaction se déroule à température élevée et à une pression telle que les réactifs se trouvent en phase vapeur. La réaction se fait, en outre, en présence d'un catalyseur acide solide stable à chaud. Cette invention concerne aussi un procédé de transestérification d'ester, qui consiste à faire réagir un premier réactif comprenant un ester avec un second réactif comprenant un alcool provenant d'une réaction de Fischer-Tropsch, à température élevée et à une pression telle que les réactifs se trouvent en phase vapeur, cette réaction s'effectuant en présence d'un catalyseur acide solide stable à chaud.

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