A process for the hydrogenation of a lactone or of a...

C - Chemistry – Metallurgy – 07 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07C 51/377 (2006.01) C07C 53/126 (2006.01)

Patent

CA 2591796

The invention provides a process for the hydrogenation of a reactant selected from the group consisting of : (a) a 5- or 6-membered lactone that is substituted at the ring-closing carbon atom and has a proton at a carbon atom adjacent to the ring-closing carbon atom; (b) an ester of a carboxylic acid having a gamma- carbonyl group and a proton at a carbon atom adjacent to the carbon atom of the carbonyl group; and (c) a carboxylic acid having a gamma- carbonyl group and a proton at a carbon atom adjacent to the carbon atom of the carbonyl group, wherein the reactant is contacted with a strongly acidic heterogeneous catalyst comprising a hydrogenating metal, in the presence of hydrogen, at a temperature in the range of from 100 to 350 ~C and a pressure in the range of from 1 to 150 bar (absolute). The invention further provides a fuel composition, preferably a diesel composition, comprising di-alkyl 4- methylnonanedioate or di-alkyl 3-ethyl-4-methylheptanedioate.

L'invention concerne un procédé destiné à l'hydrogénation d'un réactif choisi dans le groupe constitué par (a) une lactone à 5 ou 6 éléments qui est substituée au niveau de l'atome de carbone de fermeture de noyau et qui comprend un proton au niveau d'un atome de carbone adjacent à l'atome de carbone de fermeture de noyau, (b) un ester d'un acide carboxylique comprenant un groupe gamma-carbonyle et un proton au niveau d'un atome de carbone adjacent à l'atome de carbone du groupe carbonyle, et (c) un acide carboxylique comprenant un groupe gamma-carbonyle et un proton au niveau d'un atome de carbone adjacent à l'atome de carbone du groupe carbonyle, le réactif étant mis en contact avec un catalyseur hétérogène fortement acide comprenant un métal d'hydrogénation en présence d'hydrogène, à une température comprise entre 100 et 350 °C et à une pression comprise entre 1 et 150 bars (absolu). L'invention concerne également une composition de carburant, de préférence une composition de diesel, comprenant un di-alkyl-4-méthylnonanedioate ou un di-alkyl-3-éthyl-4-méthylheptanedioate.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

A process for the hydrogenation of a lactone or of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A process for the hydrogenation of a lactone or of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A process for the hydrogenation of a lactone or of a... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1569526

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.